Changes
On November 29, 2021 at 6:50:08 PM CST, Claire Herbert:
-
Added resource Tassia M. Stainton to BaySys Theses and Dissertations
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11 | "PublicationYear": "2021", | 11 | "PublicationYear": "2021", | ||
12 | "Publisher": "BaySys", | 12 | "Publisher": "BaySys", | ||
13 | "ResourceType": "journal article", | 13 | "ResourceType": "journal article", | ||
14 | "Rights": "Creative Commons Attribution 4.0 International", | 14 | "Rights": "Creative Commons Attribution 4.0 International", | ||
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28 | { | 28 | { | ||
29 | "description": "Inland water features, drainage systems and | 29 | "description": "Inland water features, drainage systems and | ||
30 | their characteristics. Examples of data you can find here include | 30 | their characteristics. Examples of data you can find here include | ||
31 | river and lake data, water quality data. \r\n\r\nIn CEOS, related | 31 | river and lake data, water quality data. \r\n\r\nIn CEOS, related | ||
32 | research themes include biogeochemistry, Inland lakes and waters, | 32 | research themes include biogeochemistry, Inland lakes and waters, | ||
33 | modelling, remote sensing and technology, trace metals and | 33 | modelling, remote sensing and technology, trace metals and | ||
34 | contaminants.", | 34 | contaminants.", | ||
35 | "display_name": "Freshwater", | 35 | "display_name": "Freshwater", | ||
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39 | "name": "freshwater", | 39 | "name": "freshwater", | ||
40 | "title": "Freshwater" | 40 | "title": "Freshwater" | ||
41 | }, | 41 | }, | ||
42 | { | 42 | { | ||
43 | "description": "Features and characteristics of salt water | 43 | "description": "Features and characteristics of salt water | ||
44 | bodies.\r\n\r\nIn CEOS, related research themes include | 44 | bodies.\r\n\r\nIn CEOS, related research themes include | ||
45 | biogeochemistry, modelling, marine mammals, oil spill response, | 45 | biogeochemistry, modelling, marine mammals, oil spill response, | ||
46 | physical oceanography, remote sensing and technology and trace metals | 46 | physical oceanography, remote sensing and technology and trace metals | ||
47 | and contaminants", | 47 | and contaminants", | ||
48 | "display_name": "Marine", | 48 | "display_name": "Marine", | ||
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52 | "name": "marine", | 52 | "name": "marine", | ||
53 | "title": "Marine" | 53 | "title": "Marine" | ||
54 | } | 54 | } | ||
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58 | "keywords": "Climate change,Hudson Bay,Modeling,Rivers", | 58 | "keywords": "Climate change,Hudson Bay,Modeling,Rivers", | ||
59 | "language": "", | 59 | "language": "", | ||
60 | "licenceType": "", | 60 | "licenceType": "", | ||
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65 | "metadata_created": "2021-11-05T21:49:02.180011", | 65 | "metadata_created": "2021-11-05T21:49:02.180011", | ||
n | 66 | "metadata_modified": "2021-11-30T00:47:43.722877", | n | 66 | "metadata_modified": "2021-11-30T00:50:08.453869", |
67 | "name": "baysys-theses-and-dissertations", | 67 | "name": "baysys-theses-and-dissertations", | ||
68 | "notes": "A collection of completed graduate student theses and | 68 | "notes": "A collection of completed graduate student theses and | ||
69 | dissertations stemming from the BaySys project.\r\n\r\n", | 69 | dissertations stemming from the BaySys project.\r\n\r\n", | ||
n | 70 | "num_resources": 10, | n | 70 | "num_resources": 11, |
71 | "num_tags": 4, | 71 | "num_tags": 4, | ||
72 | "organization": { | 72 | "organization": { | ||
73 | "approval_status": "approved", | 73 | "approval_status": "approved", | ||
74 | "created": "2017-07-21T13:15:49.935872", | 74 | "created": "2017-07-21T13:15:49.935872", | ||
75 | "description": "The Centre for Earth Observation Science (CEOS) | 75 | "description": "The Centre for Earth Observation Science (CEOS) | ||
76 | was established in 1994 with a mandate to research, preserve and | 76 | was established in 1994 with a mandate to research, preserve and | ||
77 | communicate knowledge of Earth system processes using the technologies | 77 | communicate knowledge of Earth system processes using the technologies | ||
78 | of Earth Observation Science. Research is multidisciplinary and | 78 | of Earth Observation Science. Research is multidisciplinary and | ||
79 | collaborative seeking to understand the complex interrelationships | 79 | collaborative seeking to understand the complex interrelationships | ||
80 | between elements of Earth systems, and how these systems will likely | 80 | between elements of Earth systems, and how these systems will likely | ||
81 | respond to climate change. Although researchers have worked in many | 81 | respond to climate change. Although researchers have worked in many | ||
82 | regions, the Arctic marine system has always been a unifying focus of | 82 | regions, the Arctic marine system has always been a unifying focus of | ||
83 | activity.\r\n\r\nIn 2012, CEOS, along with the Greenland Climate | 83 | activity.\r\n\r\nIn 2012, CEOS, along with the Greenland Climate | ||
84 | Research Centre (GCRC, Nuuk, Greenland) and the Arctic Research Centre | 84 | Research Centre (GCRC, Nuuk, Greenland) and the Arctic Research Centre | ||
85 | (ARC, Aarhus, Denmark) established the Arctic Science Partnership, | 85 | (ARC, Aarhus, Denmark) established the Arctic Science Partnership, | ||
86 | thereby integrating academic and research initiatives.\r\n\r\nAreas of | 86 | thereby integrating academic and research initiatives.\r\n\r\nAreas of | ||
87 | existing research activity are divided among key themes:\r\n\r\nArctic | 87 | existing research activity are divided among key themes:\r\n\r\nArctic | ||
88 | Anthropology/Paleoclimatology: LiDAR scanning and digital site | 88 | Anthropology/Paleoclimatology: LiDAR scanning and digital site | ||
89 | preservation, archaeo-geophysics, permafrost degredation, lithic | 89 | preservation, archaeo-geophysics, permafrost degredation, lithic | ||
90 | morphometrics, zooarchaeology, proxy studies, paleodistribution of sea | 90 | morphometrics, zooarchaeology, proxy studies, paleodistribution of sea | ||
91 | ice, landscape learning, Paleo-Eskimo culture, Thule Inuit culture, | 91 | ice, landscape learning, Paleo-Eskimo culture, Thule Inuit culture, | ||
92 | ethnographic analogy, traditional knowledge, climate change and | 92 | ethnographic analogy, traditional knowledge, climate change and | ||
93 | northern heritage resource management.\r\n\r\nAtmospheric | 93 | northern heritage resource management.\r\n\r\nAtmospheric | ||
94 | Studies/Meteorology: Boundary layer, precipitation, clouds, storms and | 94 | Studies/Meteorology: Boundary layer, precipitation, clouds, storms and | ||
95 | extreme weather, circulation, eddy correlations, polar vortex, | 95 | extreme weather, circulation, eddy correlations, polar vortex, | ||
96 | climate, teleconnections, geophysical fluid dynamics, flux and energy | 96 | climate, teleconnections, geophysical fluid dynamics, flux and energy | ||
97 | budgets, ocean-sea ice-atmosphere interface, radiative transfer, ice | 97 | budgets, ocean-sea ice-atmosphere interface, radiative transfer, ice | ||
98 | albedo feedback, cloud radiative forcing, pCO2. | 98 | albedo feedback, cloud radiative forcing, pCO2. | ||
99 | \r\n\r\nBiogeochemistry: Organic carbon, greenhouse gases, bubbles, | 99 | \r\n\r\nBiogeochemistry: Organic carbon, greenhouse gases, bubbles, | ||
100 | Ikaite, carbonate chemistry, CO2 fluxes, mercury and other trace | 100 | Ikaite, carbonate chemistry, CO2 fluxes, mercury and other trace | ||
101 | metals, minerals, hydrocarbons, brine processes, otolith | 101 | metals, minerals, hydrocarbons, brine processes, otolith | ||
102 | microchemistry, sediments, biomarkers. \r\n\r\nContaminants: Mercury, | 102 | microchemistry, sediments, biomarkers. \r\n\r\nContaminants: Mercury, | ||
103 | trace metals, PAHs, source, transport, transformation, pathways, | 103 | trace metals, PAHs, source, transport, transformation, pathways, | ||
104 | bioaccumulations, marine ecosystems, marine chemistry. \r\nEarth | 104 | bioaccumulations, marine ecosystems, marine chemistry. \r\nEarth | ||
105 | Observation Science: Active and passive microwave, LiDAR, EM | 105 | Observation Science: Active and passive microwave, LiDAR, EM | ||
106 | induction, spatial-temporal analysis, forward and inverse scattering | 106 | induction, spatial-temporal analysis, forward and inverse scattering | ||
107 | models, complex permittivity, ocean colour, ocean surface roughness, | 107 | models, complex permittivity, ocean colour, ocean surface roughness, | ||
108 | NIR, TIR, satellite telemetry, GPS. Ice-Associated Biology: | 108 | NIR, TIR, satellite telemetry, GPS. Ice-Associated Biology: | ||
109 | Biophysical processes, primary production; ice algae, ice | 109 | Biophysical processes, primary production; ice algae, ice | ||
110 | microbiology, bio-optics, under-ice phytoplankton. \r\n\r\nInland | 110 | microbiology, bio-optics, under-ice phytoplankton. \r\n\r\nInland | ||
111 | Lakes and Waters: Hydrologic connectivity, watershed systems, sediment | 111 | Lakes and Waters: Hydrologic connectivity, watershed systems, sediment | ||
112 | transport, nutrient transport, contaminants, landscape processes, | 112 | transport, nutrient transport, contaminants, landscape processes, | ||
113 | remote sensing, freshwater-marine coupling. Marine Mammals: Seals, | 113 | remote sensing, freshwater-marine coupling. Marine Mammals: Seals, | ||
114 | whales, habitat, conservation, satellite telemetry, distribution, | 114 | whales, habitat, conservation, satellite telemetry, distribution, | ||
115 | population studies, prey behaviour, bioacoustics.\r\n\r\nModelling: | 115 | population studies, prey behaviour, bioacoustics.\r\n\r\nModelling: | ||
116 | Simulation of sea ice and oceanic regional processes, Nucleus for | 116 | Simulation of sea ice and oceanic regional processes, Nucleus for | ||
117 | European Modelling of the Ocean (NEMO), ice-ocean modelling and | 117 | European Modelling of the Ocean (NEMO), ice-ocean modelling and | ||
118 | interactions, hind cast simulations and projections for sea ice state | 118 | interactions, hind cast simulations and projections for sea ice state | ||
119 | and ocean variables based on CMIP5 scenarios and MIROC5 forcing, | 119 | and ocean variables based on CMIP5 scenarios and MIROC5 forcing, | ||
120 | validation.\r\n\r\nOceanography: Circulation, temperature, in-flow and | 120 | validation.\r\n\r\nOceanography: Circulation, temperature, in-flow and | ||
121 | out-flow shelves, water dynamics, microturbulence, Beaufort Gyre, eddy | 121 | out-flow shelves, water dynamics, microturbulence, Beaufort Gyre, eddy | ||
122 | correlations.\r\n\r\nSea Ice Geophysics:Thermodynamic and dynamic | 122 | correlations.\r\n\r\nSea Ice Geophysics:Thermodynamic and dynamic | ||
123 | processes, extreme ice features and hazards, snow, ridges, | 123 | processes, extreme ice features and hazards, snow, ridges, | ||
124 | polynyas.\r\n\r\nTraditional and Local Knowledge: Indigenous cultures, | 124 | polynyas.\r\n\r\nTraditional and Local Knowledge: Indigenous cultures, | ||
125 | Inuit, Inuvialuit, oral history, toponomy, mobility and settlement, | 125 | Inuit, Inuvialuit, oral history, toponomy, mobility and settlement, | ||
126 | hunting, food security, sea ice use, community-based research, | 126 | hunting, food security, sea ice use, community-based research, | ||
127 | community-based monitoring, two ways of knowing.", | 127 | community-based monitoring, two ways of knowing.", | ||
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130 | "is_organization": true, | 130 | "is_organization": true, | ||
131 | "name": "ceos2", | 131 | "name": "ceos2", | ||
132 | "state": "active", | 132 | "state": "active", | ||
133 | "title": "CEOS", | 133 | "title": "CEOS", | ||
134 | "type": "organization" | 134 | "type": "organization" | ||
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149 | "related_datasets": "[]", | 149 | "related_datasets": "[]", | ||
150 | "related_programs": "[\"504c728f-da7d-4da9-acab-8430ed5c47ea\"]", | 150 | "related_programs": "[\"504c728f-da7d-4da9-acab-8430ed5c47ea\"]", | ||
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160 | "description": "**Title:** Simulating hydroelectric regulation | 160 | "description": "**Title:** Simulating hydroelectric regulation | ||
161 | and climate change in the Hudson Bay drainage basin.\r\n\r\nBeginning | 161 | and climate change in the Hudson Bay drainage basin.\r\n\r\nBeginning | ||
162 | in the 1960s and increasing through to the present, regulation of | 162 | in the 1960s and increasing through to the present, regulation of | ||
163 | reservoirs for hydroelectric generation has become more prevalent in | 163 | reservoirs for hydroelectric generation has become more prevalent in | ||
164 | the Nelson Churchill River Basin and the La Grande Rivi\u00e8re | 164 | the Nelson Churchill River Basin and the La Grande Rivi\u00e8re | ||
165 | Complex, together making up close to half of the total freshwater flux | 165 | Complex, together making up close to half of the total freshwater flux | ||
166 | entering Hudson Bay annually. Coincident with hydroelectric | 166 | entering Hudson Bay annually. Coincident with hydroelectric | ||
167 | development, the effects of climate change have intensified and are | 167 | development, the effects of climate change have intensified and are | ||
168 | more pronounced at higher latitudes, affecting the majority of the | 168 | more pronounced at higher latitudes, affecting the majority of the | ||
169 | Hudson Bay Drainage Basin (HBDB). Whether the effects of climate | 169 | Hudson Bay Drainage Basin (HBDB). Whether the effects of climate | ||
170 | change and hydroelectric regulation are additive or offsetting is | 170 | change and hydroelectric regulation are additive or offsetting is | ||
171 | unclear, creating uncertainty as to the driving cause of the observed | 171 | unclear, creating uncertainty as to the driving cause of the observed | ||
172 | changes; with added complication due to the relatively poor | 172 | changes; with added complication due to the relatively poor | ||
173 | representation of regulation in continental-scale hydrologic models. | 173 | representation of regulation in continental-scale hydrologic models. | ||
174 | This work aims to quantifiably distinguish the impacts of climate | 174 | This work aims to quantifiably distinguish the impacts of climate | ||
175 | change and hydroelectric regulation on the majority of the freshwater | 175 | change and hydroelectric regulation on the majority of the freshwater | ||
176 | supply to Hudson Bay by running two parallel sets of hydrological | 176 | supply to Hudson Bay by running two parallel sets of hydrological | ||
177 | simulations using the HYPE model. The first set improves reservoir | 177 | simulations using the HYPE model. The first set improves reservoir | ||
178 | regulation in HYPE, and the second creates a wholly re-naturalized set | 178 | regulation in HYPE, and the second creates a wholly re-naturalized set | ||
179 | of simulations with no anthropogenic influence. An ensemble of the | 179 | of simulations with no anthropogenic influence. An ensemble of the | ||
180 | Phase 5 Climate Model Intercomparison Project (CMIP5) general | 180 | Phase 5 Climate Model Intercomparison Project (CMIP5) general | ||
181 | circulation models (GCMs) and representative concentration pathways | 181 | circulation models (GCMs) and representative concentration pathways | ||
182 | (RCPs) drive simulations over the HBDB at a daily time-step from 1981 | 182 | (RCPs) drive simulations over the HBDB at a daily time-step from 1981 | ||
183 | to 2070. By subjecting both models (regulated and re-naturalized) to | 183 | to 2070. By subjecting both models (regulated and re-naturalized) to | ||
184 | climate change, the effects of hydroelectric regulation can be | 184 | climate change, the effects of hydroelectric regulation can be | ||
185 | isolated and quantifiably distinguished from climate change. This | 185 | isolated and quantifiably distinguished from climate change. This | ||
186 | research improves the performance of a hydrological model in a highly | 186 | research improves the performance of a hydrological model in a highly | ||
187 | regulated system, and further succeeds in distinguishing the | 187 | regulated system, and further succeeds in distinguishing the | ||
188 | spatio-temporal scales of different change factors. Intra-annual | 188 | spatio-temporal scales of different change factors. Intra-annual | ||
189 | changes of flow timing are primarily due to hydroelectric regulation, | 189 | changes of flow timing are primarily due to hydroelectric regulation, | ||
190 | inter-annual change is driven by upstream storage, and inter-decadal | 190 | inter-annual change is driven by upstream storage, and inter-decadal | ||
191 | impacts are the result of climate change. With these results, a | 191 | impacts are the result of climate change. With these results, a | ||
192 | variety of additional simulations (i.e., sea-ice, carbon-cycling, | 192 | variety of additional simulations (i.e., sea-ice, carbon-cycling, | ||
193 | biogeochemical) can be run to ascertain the overall health of Hudson | 193 | biogeochemical) can be run to ascertain the overall health of Hudson | ||
194 | Bay and the effects of climate change and reservoir detention can be | 194 | Bay and the effects of climate change and reservoir detention can be | ||
195 | attributed quantitatively.\r\n", | 195 | attributed quantitatively.\r\n", | ||
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203 | "name": "Andrew Tefs (2018)", | 203 | "name": "Andrew Tefs (2018)", | ||
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220 | "description": "**Title**: Assessing the Relative Contributions | 220 | "description": "**Title**: Assessing the Relative Contributions | ||
221 | of Input, Structural, Parameter, and Output Uncertainties to Total | 221 | of Input, Structural, Parameter, and Output Uncertainties to Total | ||
222 | Uncertainty in Hydrologic Modeling\r\n\r\nThe simulation of physical | 222 | Uncertainty in Hydrologic Modeling\r\n\r\nThe simulation of physical | ||
223 | environments by hydrologic models has become common as computational | 223 | environments by hydrologic models has become common as computational | ||
224 | power has increased. It is well known that, to simulate the hydrology | 224 | power has increased. It is well known that, to simulate the hydrology | ||
225 | of a physical environment, simplifications of that environment are | 225 | of a physical environment, simplifications of that environment are | ||
226 | needed. The simplified versions of hydrologic processes generate | 226 | needed. The simplified versions of hydrologic processes generate | ||
227 | uncertainty, in addition to ingesting uncertainty from input data. The | 227 | uncertainty, in addition to ingesting uncertainty from input data. The | ||
228 | uncertainty from one modeling step affects the next through | 228 | uncertainty from one modeling step affects the next through | ||
229 | propagation. Although computational power has increased through time, | 229 | propagation. Although computational power has increased through time, | ||
230 | the computational demand for uncertainty analysis still remains a | 230 | the computational demand for uncertainty analysis still remains a | ||
231 | common limiting factor on the level of detail an uncertainty analysis | 231 | common limiting factor on the level of detail an uncertainty analysis | ||
232 | can be conducted with. This thesis generates an estimate of total | 232 | can be conducted with. This thesis generates an estimate of total | ||
233 | uncertainty propagated from input, structural, and parameter | 233 | uncertainty propagated from input, structural, and parameter | ||
234 | uncertainties for the Nelson River in the Lower Nelson River Basin | 234 | uncertainties for the Nelson River in the Lower Nelson River Basin | ||
235 | near the outlet to Hudson Bay, as part of the BaySys project. Each | 235 | near the outlet to Hudson Bay, as part of the BaySys project. Each | ||
236 | source of uncertainty was relatively partitioned for determination of | 236 | source of uncertainty was relatively partitioned for determination of | ||
237 | the most valuable source of uncertainty for consideration in an | 237 | the most valuable source of uncertainty for consideration in an | ||
238 | operational environment with a limited computational budget. The | 238 | operational environment with a limited computational budget. The | ||
239 | results of this thesis show the complex spatial and temporal variation | 239 | results of this thesis show the complex spatial and temporal variation | ||
240 | present in gridded climate data. This thesis also presents an | 240 | present in gridded climate data. This thesis also presents an | ||
241 | ensemble-based methodology to account for the input uncertainty | 241 | ensemble-based methodology to account for the input uncertainty | ||
242 | associated with gridded climate data subject to propagation. The | 242 | associated with gridded climate data subject to propagation. The | ||
243 | ensemble of input data was propagated through an ensemble of | 243 | ensemble of input data was propagated through an ensemble of | ||
244 | hydrologic models. Relative sensitivities of model parameters were | 244 | hydrologic models. Relative sensitivities of model parameters were | ||
245 | shown to vary temporally and based on performance metrics, suggesting | 245 | shown to vary temporally and based on performance metrics, suggesting | ||
246 | that aggregated performance metrics obscure information. Lastly, | 246 | that aggregated performance metrics obscure information. Lastly, | ||
247 | relative partitions of uncertainty were compared through cumulative | 247 | relative partitions of uncertainty were compared through cumulative | ||
248 | distribution functions. Accounting for all sources of uncertainty | 248 | distribution functions. Accounting for all sources of uncertainty | ||
249 | appeared valuable towards improving streamflow predictability, | 249 | appeared valuable towards improving streamflow predictability, | ||
250 | however, structural uncertainty may be the most valuable in an | 250 | however, structural uncertainty may be the most valuable in an | ||
251 | operational environment with a limited computational budget followed | 251 | operational environment with a limited computational budget followed | ||
252 | by input, and parameter uncertainty.", | 252 | by input, and parameter uncertainty.", | ||
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277 | "description": "**Title:** Light propagation in ice-covered | 277 | "description": "**Title:** Light propagation in ice-covered | ||
278 | environments: seasonal progression and biological | 278 | environments: seasonal progression and biological | ||
279 | implications\r\n\r\nBeginning in the 1960s and increasing through to | 279 | implications\r\n\r\nBeginning in the 1960s and increasing through to | ||
280 | the present, regulation of reservoirs for hydroelectric generation has | 280 | the present, regulation of reservoirs for hydroelectric generation has | ||
281 | become more prevalent in the Nelson Churchill River Basin and the La | 281 | become more prevalent in the Nelson Churchill River Basin and the La | ||
282 | Grande Rivi\u00e8re Complex, together making up close to half of the | 282 | Grande Rivi\u00e8re Complex, together making up close to half of the | ||
283 | total freshwater flux entering Hudson Bay annually. Coincident with | 283 | total freshwater flux entering Hudson Bay annually. Coincident with | ||
284 | hydroelectric development, the effects of climate change have | 284 | hydroelectric development, the effects of climate change have | ||
285 | intensified and are more pronounced at higher latitudes, affecting the | 285 | intensified and are more pronounced at higher latitudes, affecting the | ||
286 | majority of the Hudson Bay Drainage Basin (HBDB). Whether the effects | 286 | majority of the Hudson Bay Drainage Basin (HBDB). Whether the effects | ||
287 | of climate change and hydroelectric regulation are additive or | 287 | of climate change and hydroelectric regulation are additive or | ||
288 | offsetting is unclear, creating uncertainty as to the driving cause of | 288 | offsetting is unclear, creating uncertainty as to the driving cause of | ||
289 | the observed changes; with added complication due to the relatively | 289 | the observed changes; with added complication due to the relatively | ||
290 | poor representation of regulation in continental-scale hydrologic | 290 | poor representation of regulation in continental-scale hydrologic | ||
291 | models. This work aims to quantifiably distinguish the impacts of | 291 | models. This work aims to quantifiably distinguish the impacts of | ||
292 | climate change and hydroelectric regulation on the majority of the | 292 | climate change and hydroelectric regulation on the majority of the | ||
293 | freshwater supply to Hudson Bay by running two parallel sets of | 293 | freshwater supply to Hudson Bay by running two parallel sets of | ||
294 | hydrological simulations using the HYPE model. The first set improves | 294 | hydrological simulations using the HYPE model. The first set improves | ||
295 | reservoir regulation in HYPE, and the second creates a wholly | 295 | reservoir regulation in HYPE, and the second creates a wholly | ||
296 | re-naturalized set of simulations with no anthropogenic influence. An | 296 | re-naturalized set of simulations with no anthropogenic influence. An | ||
297 | ensemble of the Phase 5 Climate Model Intercomparison Project (CMIP5) | 297 | ensemble of the Phase 5 Climate Model Intercomparison Project (CMIP5) | ||
298 | general circulation models (GCMs) and representative concentration | 298 | general circulation models (GCMs) and representative concentration | ||
299 | pathways (RCPs) drive simulations over the HBDB at a daily time-step | 299 | pathways (RCPs) drive simulations over the HBDB at a daily time-step | ||
300 | from 1981 to 2070. By subjecting both models (regulated and | 300 | from 1981 to 2070. By subjecting both models (regulated and | ||
301 | re-naturalized) to climate change, the effects of hydroelectric | 301 | re-naturalized) to climate change, the effects of hydroelectric | ||
302 | regulation can be isolated and quantifiably distinguished from climate | 302 | regulation can be isolated and quantifiably distinguished from climate | ||
303 | change. This research improves the performance of a hydrological model | 303 | change. This research improves the performance of a hydrological model | ||
304 | in a highly regulated system, and further succeeds in distinguishing | 304 | in a highly regulated system, and further succeeds in distinguishing | ||
305 | the spatio-temporal scales of different change factors. Intra-annual | 305 | the spatio-temporal scales of different change factors. Intra-annual | ||
306 | changes of flow timing are primarily due to hydroelectric regulation, | 306 | changes of flow timing are primarily due to hydroelectric regulation, | ||
307 | inter-annual change is driven by upstream storage, and inter-decadal | 307 | inter-annual change is driven by upstream storage, and inter-decadal | ||
308 | impacts are the result of climate change. With these results, a | 308 | impacts are the result of climate change. With these results, a | ||
309 | variety of additional simulations (i.e., sea-ice, carbon-cycling, | 309 | variety of additional simulations (i.e., sea-ice, carbon-cycling, | ||
310 | biogeochemical) can be run to ascertain the overall health of Hudson | 310 | biogeochemical) can be run to ascertain the overall health of Hudson | ||
311 | Bay and the effects of climate change and reservoir detention can be | 311 | Bay and the effects of climate change and reservoir detention can be | ||
312 | attributed quantitatively.\r\n", | 312 | attributed quantitatively.\r\n", | ||
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337 | "description": "**Title:** Current and future impacts of climate | 337 | "description": "**Title:** Current and future impacts of climate | ||
338 | change on benthic communities in the Canadian Arctic\r\nThe Arctic | 338 | change on benthic communities in the Canadian Arctic\r\nThe Arctic | ||
339 | Ocean is emerging as one of the regions that is most affected by | 339 | Ocean is emerging as one of the regions that is most affected by | ||
340 | climate change. A significant increase in precipitation and sea | 340 | climate change. A significant increase in precipitation and sea | ||
341 | surface water temperatures are expected and will undeniably lead to a | 341 | surface water temperatures are expected and will undeniably lead to a | ||
342 | significant loss of sea ice cover. Because of their effects on | 342 | significant loss of sea ice cover. Because of their effects on | ||
343 | physicochemical parameters, these changes are expected to directly | 343 | physicochemical parameters, these changes are expected to directly | ||
344 | impact the surface primary producers (sea ice algae and | 344 | impact the surface primary producers (sea ice algae and | ||
345 | phytoplankton), thereby limiting organic matter input towards the | 345 | phytoplankton), thereby limiting organic matter input towards the | ||
346 | seafloor. It is thus commonly accepted that climate change will affect | 346 | seafloor. It is thus commonly accepted that climate change will affect | ||
347 | the distribution, diversity and abundance of benthic communities, due | 347 | the distribution, diversity and abundance of benthic communities, due | ||
348 | to its impact on environmental parameters (pelagic-benthic coupling | 348 | to its impact on environmental parameters (pelagic-benthic coupling | ||
349 | and physicochemical parameters), and on ecosystem services and | 349 | and physicochemical parameters), and on ecosystem services and | ||
350 | functions (e.g., benthic remineralization). As a consequence, the | 350 | functions (e.g., benthic remineralization). As a consequence, the | ||
351 | decrease in sea ice cover, the desalination of the surface layer or | 351 | decrease in sea ice cover, the desalination of the surface layer or | ||
352 | the increase in shipping traffic in the Hudson Bay Complex and in the | 352 | the increase in shipping traffic in the Hudson Bay Complex and in the | ||
353 | eastern Canadian Arctic will likely lead to major changes in benthic | 353 | eastern Canadian Arctic will likely lead to major changes in benthic | ||
354 | community structure and biogenic structural habitats. In this context | 354 | community structure and biogenic structural habitats. In this context | ||
355 | and since the impacts of climate change on benthic arctic ecosystems | 355 | and since the impacts of climate change on benthic arctic ecosystems | ||
356 | were still poorly understood, the objectives of this thesis were to i) | 356 | were still poorly understood, the objectives of this thesis were to i) | ||
357 | describe the diversity and distribution of epibenthic communities in | 357 | describe the diversity and distribution of epibenthic communities in | ||
358 | the Hudson Bay Complex and ii) understand the effects of climate | 358 | the Hudson Bay Complex and ii) understand the effects of climate | ||
359 | change on biodiversity and benthic ecosystem functioning. The outcomes | 359 | change on biodiversity and benthic ecosystem functioning. The outcomes | ||
360 | of this thesis allowed us to i) provide the most recent survey on | 360 | of this thesis allowed us to i) provide the most recent survey on | ||
361 | epibenthic organisms in the Hudson Bay Complex and their relationships | 361 | epibenthic organisms in the Hudson Bay Complex and their relationships | ||
362 | with environmental variables; ii) identify diversity hotspots | 362 | with environmental variables; ii) identify diversity hotspots | ||
363 | sensitive to climate change; and iii) document and compare benthic | 363 | sensitive to climate change; and iii) document and compare benthic | ||
364 | biodiversity and fluxes within biogenic structures and adjacent bare | 364 | biodiversity and fluxes within biogenic structures and adjacent bare | ||
365 | sediments in the Canadian Arctic. A total of 380 taxa have been | 365 | sediments in the Canadian Arctic. A total of 380 taxa have been | ||
366 | identified from 46 stations sampled across the Hudson Bay Complex. | 366 | identified from 46 stations sampled across the Hudson Bay Complex. | ||
367 | Despite the relatively low spatial coverage of our sampling, we | 367 | Despite the relatively low spatial coverage of our sampling, we | ||
368 | estimated that our survey represented 71% of the taxa present in the | 368 | estimated that our survey represented 71% of the taxa present in the | ||
369 | Hudson Bay Complex. We showed that biomass, abundance, diversity and | 369 | Hudson Bay Complex. We showed that biomass, abundance, diversity and | ||
370 | spatial distribution of epibenthic communities were strongly | 370 | spatial distribution of epibenthic communities were strongly | ||
371 | influenced by substrate, salinity, food supply and sea ice cover. We | 371 | influenced by substrate, salinity, food supply and sea ice cover. We | ||
372 | also showed that freshwater inputs were responsible for the lowest | 372 | also showed that freshwater inputs were responsible for the lowest | ||
373 | biomass, abundance and diversity observed along the coasts. In | 373 | biomass, abundance and diversity observed along the coasts. In | ||
374 | contrast, data collected from polynyas, further offshore, showed | 374 | contrast, data collected from polynyas, further offshore, showed | ||
375 | strong pelagic-benthic coupling resulting in high productivity in | 375 | strong pelagic-benthic coupling resulting in high productivity in | ||
376 | terms of biomass, abundance and diversity. Moreover, hierarchical | 376 | terms of biomass, abundance and diversity. Moreover, hierarchical | ||
377 | modelling of species communities highlighted the influence of sea ice | 377 | modelling of species communities highlighted the influence of sea ice | ||
378 | and indirectly of sea ice algae on the epibenthic communities | 378 | and indirectly of sea ice algae on the epibenthic communities | ||
379 | occupying the central Hudson Bay. Projections of the structure of | 379 | occupying the central Hudson Bay. Projections of the structure of | ||
380 | epibenthic communities under a RCP4.5 climate scenario revealed that | 380 | epibenthic communities under a RCP4.5 climate scenario revealed that | ||
381 | the central Hudson Bay emerges as the most vulnerable area to climate | 381 | the central Hudson Bay emerges as the most vulnerable area to climate | ||
382 | change with a future diversity loss related to the decrease of sea | 382 | change with a future diversity loss related to the decrease of sea | ||
383 | ice. On the contrary, it would appear that coastal areas will serve as | 383 | ice. On the contrary, it would appear that coastal areas will serve as | ||
384 | refuges and increase the diversity. In addition, our study showed that | 384 | refuges and increase the diversity. In addition, our study showed that | ||
385 | the presence of biogenic structures in deep habitats improved the | 385 | the presence of biogenic structures in deep habitats improved the | ||
386 | trapping of organic matter, leading to a higher density of infauna in | 386 | trapping of organic matter, leading to a higher density of infauna in | ||
387 | these environments compared to bare sediments. Their presence has also | 387 | these environments compared to bare sediments. Their presence has also | ||
388 | been found to enhance sediment nutrient release in the form of | 388 | been found to enhance sediment nutrient release in the form of | ||
389 | nitrates and ammonium. However, our study could not demonstrate these | 389 | nitrates and ammonium. However, our study could not demonstrate these | ||
390 | effects in a shallower sponge habitat. By providing new knowledge on | 390 | effects in a shallower sponge habitat. By providing new knowledge on | ||
391 | the current and future distribution of epibenthic communities in the | 391 | the current and future distribution of epibenthic communities in the | ||
392 | Hudson Bay Complex and the benthic ecosystem functioning in habitats | 392 | Hudson Bay Complex and the benthic ecosystem functioning in habitats | ||
393 | with biogenic structures, results obtained during this thesis will | 393 | with biogenic structures, results obtained during this thesis will | ||
394 | contribute to the designation of Ecologically and Biologically | 394 | contribute to the designation of Ecologically and Biologically | ||
395 | Significant Areas, as well as to the establishment of Marine Protected | 395 | Significant Areas, as well as to the establishment of Marine Protected | ||
396 | Areas and conservation strategies in the Arctic Ocean.\r\nDocument | 396 | Areas and conservation strategies in the Arctic Ocean.\r\nDocument | ||
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422 | "description": "**Title:** Assessing the effects of uncertainty | 422 | "description": "**Title:** Assessing the effects of uncertainty | ||
423 | and climate change on hydrological simulations across a permafrost | 423 | and climate change on hydrological simulations across a permafrost | ||
424 | gradient in North-Central Canada\r\n\r\nHudson Bay, a vast inland sea | 424 | gradient in North-Central Canada\r\n\r\nHudson Bay, a vast inland sea | ||
425 | in northern Canada, receives the highest average \r\nannual freshwater | 425 | in northern Canada, receives the highest average \r\nannual freshwater | ||
426 | from the Nelson River system among all other contributing rivers. A | 426 | from the Nelson River system among all other contributing rivers. A | ||
427 | \r\nrapidly changing climate and flow regulation from hydroelectric | 427 | \r\nrapidly changing climate and flow regulation from hydroelectric | ||
428 | developments alter Nelson \r\nRiver streamflows timing and magnitude, | 428 | developments alter Nelson \r\nRiver streamflows timing and magnitude, | ||
429 | affecting Hudson Bay\u2019s physical, biological, and | 429 | affecting Hudson Bay\u2019s physical, biological, and | ||
430 | \r\nbiogeochemical state. Despite recent developments and advances in | 430 | \r\nbiogeochemical state. Despite recent developments and advances in | ||
431 | climate datasets, \r\nhydrological models, and computational power, | 431 | climate datasets, \r\nhydrological models, and computational power, | ||
432 | modelling the Hudson Bay system remains \r\nparticularly challenging. | 432 | modelling the Hudson Bay system remains \r\nparticularly challenging. | ||
433 | Therefore, this dissertation addresses crucial research questions | 433 | Therefore, this dissertation addresses crucial research questions | ||
434 | \r\nfrom the Hudson Bay System (BaySys) project by informing how | 434 | \r\nfrom the Hudson Bay System (BaySys) project by informing how | ||
435 | climate change impacts \r\nvariability and trends of freshwater-marine | 435 | climate change impacts \r\nvariability and trends of freshwater-marine | ||
436 | coupling in Hudson Bay. To that end, I present a \r\ncomprehensive | 436 | coupling in Hudson Bay. To that end, I present a \r\ncomprehensive | ||
437 | intercomparison of available climate datasets, their performance, and | 437 | intercomparison of available climate datasets, their performance, and | ||
438 | \r\napplication within the macroscale Variable Infiltration Capacity | 438 | \r\napplication within the macroscale Variable Infiltration Capacity | ||
439 | (VIC) model, over the \r\nLower Nelson River Basin (LNRB). This work | 439 | (VIC) model, over the \r\nLower Nelson River Basin (LNRB). This work | ||
440 | aims to identify the VIC parameters \r\nsensitivity and uncertainty in | 440 | aims to identify the VIC parameters \r\nsensitivity and uncertainty in | ||
441 | water balance estimations and investigates future warming \r\nimpacts | 441 | water balance estimations and investigates future warming \r\nimpacts | ||
442 | on soil thermal regimes and hydrology in the LNRB. \r\nAn | 442 | on soil thermal regimes and hydrology in the LNRB. \r\nAn | ||
443 | intercomparison of six climate datasets and their equally weighted | 443 | intercomparison of six climate datasets and their equally weighted | ||
444 | mean reveals \r\ngenerally consistent air temperature climatologies | 444 | mean reveals \r\ngenerally consistent air temperature climatologies | ||
445 | and trends (1981\u20132010) but with a \r\nprominent disagreement in | 445 | and trends (1981\u20132010) but with a \r\nprominent disagreement in | ||
446 | annual precipitation trends with exceptional wetting trends in | 446 | annual precipitation trends with exceptional wetting trends in | ||
447 | \r\nreanalysis products. VIC simulations forced by these datasets are | 447 | \r\nreanalysis products. VIC simulations forced by these datasets are | ||
448 | utilized to examine \r\nparameter sensitivity and uncertainties due to | 448 | utilized to examine \r\nparameter sensitivity and uncertainties due to | ||
449 | input data and model parameters. Findings \r\nsuggest that | 449 | input data and model parameters. Findings \r\nsuggest that | ||
450 | infiltration and prescribed soil depth parameters show prevailing | 450 | infiltration and prescribed soil depth parameters show prevailing | ||
451 | seasonal and \r\nannual impacts, among other VIC parameters across the | 451 | seasonal and \r\nannual impacts, among other VIC parameters across the | ||
452 | LNRB. Further, VIC simulations \r\n(1981\u20132070) reveal historical | 452 | LNRB. Further, VIC simulations \r\n(1981\u20132070) reveal historical | ||
453 | and possible future climate change impacts on cold regions \r\niii | 453 | and possible future climate change impacts on cold regions \r\niii | ||
454 | \r\n \r\n \r\n \r\nhydrology and soil thermal conditions across the | 454 | \r\n \r\n \r\n \r\nhydrology and soil thermal conditions across the | ||
455 | study domain. Results suggest that, in the \r\nprojected climate, soil | 455 | study domain. Results suggest that, in the \r\nprojected climate, soil | ||
456 | temperature warming induces increasing baseflows as future warming | 456 | temperature warming induces increasing baseflows as future warming | ||
457 | \r\nmay intensify infiltration processes across the LNRB. This | 457 | \r\nmay intensify infiltration processes across the LNRB. This | ||
458 | dissertation reports essential \r\nfindings in the application of | 458 | dissertation reports essential \r\nfindings in the application of | ||
459 | state-of-the-art climate data and the VIC model to explore | 459 | state-of-the-art climate data and the VIC model to explore | ||
460 | \r\npotential changes in hydrology across the LNRB\u2019s permafrost | 460 | \r\npotential changes in hydrology across the LNRB\u2019s permafrost | ||
461 | gradient with industrial \r\nrelevance of future water management, | 461 | gradient with industrial \r\nrelevance of future water management, | ||
462 | hydroelectric generation, infrastructure development, \r\noperations, | 462 | hydroelectric generation, infrastructure development, \r\noperations, | ||
463 | optimization, and implementation of adaptation measures for current | 463 | optimization, and implementation of adaptation measures for current | ||
464 | and future \r\ndevelopments. \r\n\r\n\r\n**Link to University of | 464 | and future \r\ndevelopments. \r\n\r\n\r\n**Link to University of | ||
465 | Northern British Columbia library :** | 465 | Northern British Columbia library :** | ||
466 | id%5D=6bd9d43960a3ad30cf63&solr_nav%5Bpage%5D=0&solr_nav%5Boffset%5D=0 | 466 | id%5D=6bd9d43960a3ad30cf63&solr_nav%5Bpage%5D=0&solr_nav%5Boffset%5D=0 | ||
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492 | "description": "**Title:** On the circulation and freshwater | 492 | "description": "**Title:** On the circulation and freshwater | ||
493 | dynamics of the Hudson Bay Complex.\r\n\r\n**Abstract:** \r\n\r\nThe | 493 | dynamics of the Hudson Bay Complex.\r\n\r\n**Abstract:** \r\n\r\nThe | ||
494 | Hudson Bay Complex (HBC), which includes Hudson, James, and Ungava | 494 | Hudson Bay Complex (HBC), which includes Hudson, James, and Ungava | ||
495 | Bays, Foxe\r\nBasin, and Hudson Strait, is currently undergoing change | 495 | Bays, Foxe\r\nBasin, and Hudson Strait, is currently undergoing change | ||
496 | from two anthropogenic sources;\r\nindustry and global warming. The | 496 | from two anthropogenic sources;\r\nindustry and global warming. The | ||
497 | communities surrounding this region use the sea for | 497 | communities surrounding this region use the sea for | ||
498 | travel,\r\nhunting, and social connections, year round. Changes in the | 498 | travel,\r\nhunting, and social connections, year round. Changes in the | ||
499 | food chain and ice conditions\r\nthus impact the daily lives of the | 499 | food chain and ice conditions\r\nthus impact the daily lives of the | ||
500 | locals. The HBC also has a large drainage basin, receiving\r\nabout | 500 | locals. The HBC also has a large drainage basin, receiving\r\nabout | ||
501 | 900 km3 of freshwater annually, making it an ideal location for the | 501 | 900 km3 of freshwater annually, making it an ideal location for the | ||
502 | production of\r\nhydroelectricity. This riverine water traverses | 502 | production of\r\nhydroelectricity. This riverine water traverses | ||
503 | Hudson Bay and is advected to the North\r\nAtlantic via Hudson Strait, | 503 | Hudson Bay and is advected to the North\r\nAtlantic via Hudson Strait, | ||
504 | the main pathway for exchange between the HBC and the global\r\nocean. | 504 | the main pathway for exchange between the HBC and the global\r\nocean. | ||
505 | Hudson Strait is also the third largest source of advected freshwater | 505 | Hudson Strait is also the third largest source of advected freshwater | ||
506 | to the Labrador\r\nSea after Fram and Davis Straits.\r\nHowever, our | 506 | to the Labrador\r\nSea after Fram and Davis Straits.\r\nHowever, our | ||
507 | understanding of the role of riverine water in the bay is limited, and | 507 | understanding of the role of riverine water in the bay is limited, and | ||
508 | downstream effects of changes in river discharge is presently unknown. | 508 | downstream effects of changes in river discharge is presently unknown. | ||
509 | Additionally, knowledge of\r\ncirculation in areas, such as Hudson | 509 | Additionally, knowledge of\r\ncirculation in areas, such as Hudson | ||
510 | Strait, is limited to a few observational datasets. These\r\ndatasets | 510 | Strait, is limited to a few observational datasets. These\r\ndatasets | ||
511 | focus mostly on the southern side of the strait which contains fresh | 511 | focus mostly on the southern side of the strait which contains fresh | ||
512 | eastward flow, and\r\nwhile valuable, there are no recent published | 512 | eastward flow, and\r\nwhile valuable, there are no recent published | ||
513 | data for the north side of the strait containing\r\nwestward flowing | 513 | data for the north side of the strait containing\r\nwestward flowing | ||
514 | waters entering the bay.\r\nI begin by presenting the first multi-year | 514 | waters entering the bay.\r\nI begin by presenting the first multi-year | ||
515 | freshwater budget for the HBC. Using four model\r\nsimulations and | 515 | freshwater budget for the HBC. Using four model\r\nsimulations and | ||
516 | three river discharge datasets, I show that river discharge impacts | 516 | three river discharge datasets, I show that river discharge impacts | ||
517 | freshwater\r\nfluxes out of the region on timescales longer than a | 517 | freshwater\r\nfluxes out of the region on timescales longer than a | ||
518 | year. Decreased river discharge and\r\nseasonality led to reduced | 518 | year. Decreased river discharge and\r\nseasonality led to reduced | ||
519 | freshwater and volume exchange within the HBC and to the | 519 | freshwater and volume exchange within the HBC and to the | ||
520 | North\r\nAtlantic. Model resolution had minimal impact on freshwater | 520 | North\r\nAtlantic. Model resolution had minimal impact on freshwater | ||
521 | and volume fluxes in areas\r\nwith simple flow dynamics. I also | 521 | and volume fluxes in areas\r\nwith simple flow dynamics. I also | ||
522 | provide estimates of the Ekman, mean, and | 522 | provide estimates of the Ekman, mean, and | ||
523 | turbulent\r\nii\r\ncomponents of freshwater exchange between the | 523 | turbulent\r\nii\r\ncomponents of freshwater exchange between the | ||
524 | interior and boundary regions of the bay.\r\nThe mean and Ekman | 524 | interior and boundary regions of the bay.\r\nThe mean and Ekman | ||
525 | components import freshwater to the interior in spring and | 525 | components import freshwater to the interior in spring and | ||
526 | summer,\r\nand export it in the fall. Residence times of discharge in | 526 | summer,\r\nand export it in the fall. Residence times of discharge in | ||
527 | the HBC are calculated using an\r\noffline Lagrangian passive tracer | 527 | the HBC are calculated using an\r\noffline Lagrangian passive tracer | ||
528 | tool, with an upper limit of 32 years.\r\nUsing the highest resolution | 528 | tool, with an upper limit of 32 years.\r\nUsing the highest resolution | ||
529 | model simulation available at the time, I revisited the | 529 | model simulation available at the time, I revisited the | ||
530 | summer\r\ncirculation pattern in Hudson Bay, which historically was | 530 | summer\r\ncirculation pattern in Hudson Bay, which historically was | ||
531 | thought to be cyclonic. Using\r\nsatellite altimetry data along with | 531 | thought to be cyclonic. Using\r\nsatellite altimetry data along with | ||
532 | model output, I showed that in summer, steric height\r\ngradients due | 532 | model output, I showed that in summer, steric height\r\ngradients due | ||
533 | to increased river discharge in summer, generate small scale features, | 533 | to increased river discharge in summer, generate small scale features, | ||
534 | including\r\nanticyclonic geostrophic flow in eastern Hudson Bay. | 534 | including\r\nanticyclonic geostrophic flow in eastern Hudson Bay. | ||
535 | Given this result, I present a revised\r\nsummer surface flow pattern | 535 | Given this result, I present a revised\r\nsummer surface flow pattern | ||
536 | for Hudson Bay.\r\nFinally, to increase our understanding of flow and | 536 | for Hudson Bay.\r\nFinally, to increase our understanding of flow and | ||
537 | water exchange in Hudson Strait, I\r\npresent the first year long | 537 | water exchange in Hudson Strait, I\r\npresent the first year long | ||
538 | observed measurements of flow on the northern side of | 538 | observed measurements of flow on the northern side of | ||
539 | Hudson\r\nStrait. Mooring data show a saline, weakly stratified inflow | 539 | Hudson\r\nStrait. Mooring data show a saline, weakly stratified inflow | ||
540 | with reduced seasonality on the\r\nnorthern side compared to the | 540 | with reduced seasonality on the\r\nnorthern side compared to the | ||
541 | southern side of the strait, which contains the fresh, | 541 | southern side of the strait, which contains the fresh, | ||
542 | discharge\r\nladen outflow. Source waters are from the Baffin Island | 542 | discharge\r\nladen outflow. Source waters are from the Baffin Island | ||
543 | Current, comprised mainly of Arctic\r\nwater, with small contributions | 543 | Current, comprised mainly of Arctic\r\nwater, with small contributions | ||
544 | from Transitional Water and West Greenland Irminger Water.", | 544 | from Transitional Water and West Greenland Irminger Water.", | ||
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552 | "name": "Natasha A. Ridenour (2020). ", | 552 | "name": "Natasha A. Ridenour (2020). ", | ||
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569 | "description": "**Title**: Mercury cycling in hydroelectric | 569 | "description": "**Title**: Mercury cycling in hydroelectric | ||
570 | reservoirs of northern Manitoba decades after | 570 | reservoirs of northern Manitoba decades after | ||
571 | impoundment\r\n\r\n**Abstract**\r\n\r\nAs the global climate changes | 571 | impoundment\r\n\r\n**Abstract**\r\n\r\nAs the global climate changes | ||
572 | and demand for renewable electricity increases, construction of | 572 | and demand for renewable electricity increases, construction of | ||
573 | hydroelectric dams is increasing globally though the impacts of | 573 | hydroelectric dams is increasing globally though the impacts of | ||
574 | regulating the worlds rivers are still understudied. Northern | 574 | regulating the worlds rivers are still understudied. Northern | ||
575 | Manitoba, Canada, has extensive hydroelectric development since the | 575 | Manitoba, Canada, has extensive hydroelectric development since the | ||
576 | 1950s; fish mercury (Hg) concentrations in on-system lakes were | 576 | 1950s; fish mercury (Hg) concentrations in on-system lakes were | ||
577 | observed to have increased above human consumption guidelines upon | 577 | observed to have increased above human consumption guidelines upon | ||
578 | impoundment and have taken decades to decrease towards natural | 578 | impoundment and have taken decades to decrease towards natural | ||
579 | concentrations. To better understand the long-term impacts of | 579 | concentrations. To better understand the long-term impacts of | ||
580 | hydroelectric regulation on Hg in fish and other biota in Northern | 580 | hydroelectric regulation on Hg in fish and other biota in Northern | ||
581 | Manitoba, we determined methylmercury (MeHg) production potential in | 581 | Manitoba, we determined methylmercury (MeHg) production potential in | ||
582 | soil from the water fluctuation zone in on- and off-system lakes | 582 | soil from the water fluctuation zone in on- and off-system lakes | ||
583 | through a soil flooding incubation experiment in the laboratory. We | 583 | through a soil flooding incubation experiment in the laboratory. We | ||
584 | further studied the historic flux of MeHg and Hg to the sediments in | 584 | further studied the historic flux of MeHg and Hg to the sediments in | ||
585 | on- and off-system lakes and links to organic matter in these | 585 | on- and off-system lakes and links to organic matter in these | ||
586 | waterbodies. We found that MeHg production was highest in the water | 586 | waterbodies. We found that MeHg production was highest in the water | ||
587 | fluctuation zone of the on-system lakes, which may represent an | 587 | fluctuation zone of the on-system lakes, which may represent an | ||
588 | increased source of MeHg to the food web in these environments even | 588 | increased source of MeHg to the food web in these environments even | ||
589 | decades after impoundment. In addition, sedimentation rates were found | 589 | decades after impoundment. In addition, sedimentation rates were found | ||
590 | to greatly affect Hg fluxes to the sediment in those waterbodies where | 590 | to greatly affect Hg fluxes to the sediment in those waterbodies where | ||
591 | increased water flows result in higher erosion and sedimentation. | 591 | increased water flows result in higher erosion and sedimentation. | ||
592 | These findings provide new insight in our understanding of the | 592 | These findings provide new insight in our understanding of the | ||
593 | long-term recovery of Hg cycling within on-system lakes decades after | 593 | long-term recovery of Hg cycling within on-system lakes decades after | ||
594 | impoundment.", | 594 | impoundment.", | ||
595 | "format": "PDF", | 595 | "format": "PDF", | ||
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602 | "name": "James Singer (2020)", | 602 | "name": "James Singer (2020)", | ||
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616 | "created": "2021-11-30T00:40:12.002494", | 616 | "created": "2021-11-30T00:40:12.002494", | ||
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619 | "description": "**Title**: Integrated passive microwave and | 619 | "description": "**Title**: Integrated passive microwave and | ||
620 | unmanned aerial vehicle studies of Hudson Bay sea ice during the | 620 | unmanned aerial vehicle studies of Hudson Bay sea ice during the | ||
621 | summer melt period\r\n\r\n**Abstract**:\r\n\r\nInaccuracies in sea ice | 621 | summer melt period\r\n\r\n**Abstract**:\r\n\r\nInaccuracies in sea ice | ||
622 | observations from passive microwave satellite sensors increase during | 622 | observations from passive microwave satellite sensors increase during | ||
623 | the summer melt period due to the evolution of sea ice thermophysical | 623 | the summer melt period due to the evolution of sea ice thermophysical | ||
624 | properties driving complexity in ice emissivity. Research from this | 624 | properties driving complexity in ice emissivity. Research from this | ||
625 | thesis examines variations in sea ice thermophysical properties in | 625 | thesis examines variations in sea ice thermophysical properties in | ||
626 | Hudson Bay throughout summer melt and relates them to ice surface | 626 | Hudson Bay throughout summer melt and relates them to ice surface | ||
627 | emissivity. This is achieved through the collection and analysis of a | 627 | emissivity. This is achieved through the collection and analysis of a | ||
628 | time-series of in situ passive microwave and unmanned aerial vehicle | 628 | time-series of in situ passive microwave and unmanned aerial vehicle | ||
629 | measurements of sea ice. Contributions from this thesis are made under | 629 | measurements of sea ice. Contributions from this thesis are made under | ||
630 | two overarching categories: 1) the influence of sediment presence on | 630 | two overarching categories: 1) the influence of sediment presence on | ||
631 | sea ice passive microwave signature and; 2) the evolution of in situ | 631 | sea ice passive microwave signature and; 2) the evolution of in situ | ||
632 | and satellite-based sea ice emissivity throughout the melt period in | 632 | and satellite-based sea ice emissivity throughout the melt period in | ||
633 | Hudson Bay. Results from this research link non-uniform distribution | 633 | Hudson Bay. Results from this research link non-uniform distribution | ||
634 | of sediment across the ice surface to increased surface topography, as | 634 | of sediment across the ice surface to increased surface topography, as | ||
635 | a result of enhanced melt rates from decreased surface albedo. The in | 635 | a result of enhanced melt rates from decreased surface albedo. The in | ||
636 | situ passive microwave signature of sediment-laden ice is then | 636 | situ passive microwave signature of sediment-laden ice is then | ||
637 | examined, in relation to the surface roughness and liquid water | 637 | examined, in relation to the surface roughness and liquid water | ||
638 | presence on the ice surface. This thesis also verifies the evolution | 638 | presence on the ice surface. This thesis also verifies the evolution | ||
639 | of in situ sea ice emissivity during the melt period in relation to | 639 | of in situ sea ice emissivity during the melt period in relation to | ||
640 | the existing literature, and distinct periods of ice emissivity during | 640 | the existing literature, and distinct periods of ice emissivity during | ||
641 | ice melt are highlighted. In situ and satellite-based microwave | 641 | ice melt are highlighted. In situ and satellite-based microwave | ||
642 | brightness temperatures are compared, facilitated by a multi-sensor | 642 | brightness temperatures are compared, facilitated by a multi-sensor | ||
643 | approach. To the authors' knowledge, these results contribute the | 643 | approach. To the authors' knowledge, these results contribute the | ||
644 | first multi-sensor in situ observations of sediment laden sea ice, and | 644 | first multi-sensor in situ observations of sediment laden sea ice, and | ||
645 | the first comprehensive analysis of the emissive properties of Hudson | 645 | the first comprehensive analysis of the emissive properties of Hudson | ||
646 | Bay sea ice throughout the summer melt period.\r\n", | 646 | Bay sea ice throughout the summer melt period.\r\n", | ||
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654 | "name": "Madison Leigh Harasyn (2019)", | 654 | "name": "Madison Leigh Harasyn (2019)", | ||
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661 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/34021", | 661 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/34021", | ||
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670 | "description": "**Title**: The evolution of wind-driven surface | 670 | "description": "**Title**: The evolution of wind-driven surface | ||
671 | waves in partial sea ice cover in the southern Beaufort | 671 | waves in partial sea ice cover in the southern Beaufort | ||
672 | Sea\r\n\r\n**Abstract**\r\n\r\nSurface waves play an important role in | 672 | Sea\r\n\r\n**Abstract**\r\n\r\nSurface waves play an important role in | ||
673 | how energy is transported and distributed to both sea ice and | 673 | how energy is transported and distributed to both sea ice and | ||
674 | atmosphere in Arctic seas. The region of marginal sea ice, termed the | 674 | atmosphere in Arctic seas. The region of marginal sea ice, termed the | ||
675 | Marginal Ice Zone (MIZ), has been increasing alongside temperature, | 675 | Marginal Ice Zone (MIZ), has been increasing alongside temperature, | ||
676 | introducing even more open water spaces within the sea ice field. | 676 | introducing even more open water spaces within the sea ice field. | ||
677 | Little research has focused on the development of waves within these | 677 | Little research has focused on the development of waves within these | ||
678 | open water spaces, and how the wave field evolves under such | 678 | open water spaces, and how the wave field evolves under such | ||
679 | restricted fetch environments. This study considers a set of | 679 | restricted fetch environments. This study considers a set of | ||
680 | observations collected using moorings from ASL Environmental Sciences | 680 | observations collected using moorings from ASL Environmental Sciences | ||
681 | in the southern Beaufort Sea. These observations suggest local wave | 681 | in the southern Beaufort Sea. These observations suggest local wave | ||
682 | development as the dominant source of wave energy tens of kilometers | 682 | development as the dominant source of wave energy tens of kilometers | ||
683 | in the MIZ throughout the month of August. The significant wave | 683 | in the MIZ throughout the month of August. The significant wave | ||
684 | heights (H_s) and peak periods (T_p) were kept low throughout the | 684 | heights (H_s) and peak periods (T_p) were kept low throughout the | ||
685 | month, mainly remaining below a H_s of 0.6 m and a T_p of 6 s in sea | 685 | month, mainly remaining below a H_s of 0.6 m and a T_p of 6 s in sea | ||
686 | ice. At the end of the month, open water waves were able to influence | 686 | ice. At the end of the month, open water waves were able to influence | ||
687 | the wave characteristics and there were notable increases in both | 687 | the wave characteristics and there were notable increases in both | ||
688 | heights and periods. This study examines how the attenuation of such | 688 | heights and periods. This study examines how the attenuation of such | ||
689 | waves by sea ice differs from the attenuation of open water waves | 689 | waves by sea ice differs from the attenuation of open water waves | ||
690 | moving into the MIZ. The coherence and positive correlation between | 690 | moving into the MIZ. The coherence and positive correlation between | ||
691 | H_s and T_p were found to be predominant in the sea ice field. This | 691 | H_s and T_p were found to be predominant in the sea ice field. This | ||
692 | differs from the classic attenuation of open water waves in sea ice | 692 | differs from the classic attenuation of open water waves in sea ice | ||
693 | where peak periods increase while wave heights decrease, producing a | 693 | where peak periods increase while wave heights decrease, producing a | ||
694 | distinct negative relationship with distance in sea ice. There was no | 694 | distinct negative relationship with distance in sea ice. There was no | ||
695 | preferential increase or lengthening of the dominant waves under | 695 | preferential increase or lengthening of the dominant waves under | ||
696 | easterly and southerly winds where the wave fetches were long, and the | 696 | easterly and southerly winds where the wave fetches were long, and the | ||
697 | wind speed was found to have limited influence on wave growth after | 697 | wind speed was found to have limited influence on wave growth after | ||
698 | development. Estimations of fetch using empirical relationships, | 698 | development. Estimations of fetch using empirical relationships, | ||
699 | supplemented by satellite imagery, indicate that the short fetches | 699 | supplemented by satellite imagery, indicate that the short fetches | ||
700 | were the dominant factor in terms of wave growth, which indicates an | 700 | were the dominant factor in terms of wave growth, which indicates an | ||
701 | evolution similar to open water waves until they reach an sea ice floe | 701 | evolution similar to open water waves until they reach an sea ice floe | ||
702 | interface and are scattered, a process which depends greatly on the | 702 | interface and are scattered, a process which depends greatly on the | ||
703 | sea ice type, size, rheology and the length of the waves. The | 703 | sea ice type, size, rheology and the length of the waves. The | ||
704 | interplay among the sea ice (size, structure and concentration) and | 704 | interplay among the sea ice (size, structure and concentration) and | ||
705 | the wind during a storm event provides an interesting look at the | 705 | the wind during a storm event provides an interesting look at the | ||
706 | behavior of locally developed waves and the transition to more open | 706 | behavior of locally developed waves and the transition to more open | ||
707 | water characteristics and development as the sea ice becomes eroded | 707 | water characteristics and development as the sea ice becomes eroded | ||
708 | close to the end of the month. While waves developed locally in sea | 708 | close to the end of the month. While waves developed locally in sea | ||
709 | ice are expected to be fairly low compared to open water waves, they | 709 | ice are expected to be fairly low compared to open water waves, they | ||
710 | play an important role in the fluxes of energy and momentum in the MIZ | 710 | play an important role in the fluxes of energy and momentum in the MIZ | ||
711 | and the expansion of this region has implications for the overall | 711 | and the expansion of this region has implications for the overall | ||
712 | energy balance in Arctic marine systems.\r\n", | 712 | energy balance in Arctic marine systems.\r\n", | ||
713 | "format": "PDF", | 713 | "format": "PDF", | ||
714 | "hash": "", | 714 | "hash": "", | ||
715 | "id": "acf1edbd-0583-4fa5-bfb6-9b8db0eec342", | 715 | "id": "acf1edbd-0583-4fa5-bfb6-9b8db0eec342", | ||
716 | "last_modified": null, | 716 | "last_modified": null, | ||
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718 | "mimetype": null, | 718 | "mimetype": null, | ||
719 | "mimetype_inner": null, | 719 | "mimetype_inner": null, | ||
720 | "name": "Yanique S. Campbell (2019)", | 720 | "name": "Yanique S. Campbell (2019)", | ||
721 | "package_id": "31740642-18a1-4b3c-b6f0-58082f4404ff", | 721 | "package_id": "31740642-18a1-4b3c-b6f0-58082f4404ff", | ||
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726 | "state": "active", | 726 | "state": "active", | ||
727 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/34477", | 727 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/34477", | ||
728 | "url_type": null | 728 | "url_type": null | ||
729 | }, | 729 | }, | ||
730 | { | 730 | { | ||
731 | "cache_last_updated": null, | 731 | "cache_last_updated": null, | ||
732 | "cache_url": null, | 732 | "cache_url": null, | ||
733 | "created": "2021-11-30T00:46:47.255192", | 733 | "created": "2021-11-30T00:46:47.255192", | ||
734 | "datastore_active": false, | 734 | "datastore_active": false, | ||
735 | "datastore_contains_all_records_of_source_file": false, | 735 | "datastore_contains_all_records_of_source_file": false, | ||
736 | "description": "**Title:** Numerical modeling of Hudson Bay | 736 | "description": "**Title:** Numerical modeling of Hudson Bay | ||
737 | Complex, sea ice regime and sea surface | 737 | Complex, sea ice regime and sea surface | ||
738 | temperature\r\n\r\n**Abstract**\r\n\r\nThis thesis presents the | 738 | temperature\r\n\r\n**Abstract**\r\n\r\nThis thesis presents the | ||
739 | numerical simulations in Hudson Bay Complex (HBC) in regards to its | 739 | numerical simulations in Hudson Bay Complex (HBC) in regards to its | ||
740 | mass and surface energy balance. First, the Sea Surface Temperature | 740 | mass and surface energy balance. First, the Sea Surface Temperature | ||
741 | (SST) from four NEMO (Nucleus for European Modelling of the Ocean) | 741 | (SST) from four NEMO (Nucleus for European Modelling of the Ocean) | ||
742 | model simulations are analysed to study the bulk flux parameterization | 742 | model simulations are analysed to study the bulk flux parameterization | ||
743 | to compute SST over the Hudson Bay Complex for the summer months | 743 | to compute SST over the Hudson Bay Complex for the summer months | ||
744 | (August and September) from 2002 to 2009. Results from these different | 744 | (August and September) from 2002 to 2009. Results from these different | ||
745 | sensitivity experiments showed the low impact of the model resolution | 745 | sensitivity experiments showed the low impact of the model resolution | ||
746 | and runoff on the simulated SST in HBC. Second the seasonal cycle of | 746 | and runoff on the simulated SST in HBC. Second the seasonal cycle of | ||
747 | sea ice variability in the HBC, together with the dynamic and | 747 | sea ice variability in the HBC, together with the dynamic and | ||
748 | thermodynamic processes that control it, were examined. Results showed | 748 | thermodynamic processes that control it, were examined. Results showed | ||
749 | that the thermodynamic fluctuations are the dominant term in the total | 749 | that the thermodynamic fluctuations are the dominant term in the total | ||
750 | ice tendency variations for all HBC sections and the dynamic term | 750 | ice tendency variations for all HBC sections and the dynamic term | ||
751 | plays a minor role in the total ice thickness trends.\r\n", | 751 | plays a minor role in the total ice thickness trends.\r\n", | ||
752 | "format": "PDF", | 752 | "format": "PDF", | ||
753 | "hash": "", | 753 | "hash": "", | ||
754 | "id": "36a5c69f-6d32-4654-8761-918983aadebb", | 754 | "id": "36a5c69f-6d32-4654-8761-918983aadebb", | ||
755 | "last_modified": null, | 755 | "last_modified": null, | ||
n | 756 | "metadata_modified": "2021-11-30T00:47:43.730706", | n | 756 | "metadata_modified": "2021-11-30T00:50:08.460296", |
757 | "mimetype": null, | 757 | "mimetype": null, | ||
758 | "mimetype_inner": null, | 758 | "mimetype_inner": null, | ||
759 | "name": "Shabnam Jafarikhasragh (2019)", | 759 | "name": "Shabnam Jafarikhasragh (2019)", | ||
760 | "package_id": "31740642-18a1-4b3c-b6f0-58082f4404ff", | 760 | "package_id": "31740642-18a1-4b3c-b6f0-58082f4404ff", | ||
761 | "position": 9, | 761 | "position": 9, | ||
762 | "resCategory": "data", | 762 | "resCategory": "data", | ||
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765 | "state": "active", | 765 | "state": "active", | ||
766 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/33851", | 766 | "url": "https://mspace.lib.umanitoba.ca/handle/1993/33851", | ||
t | t | 767 | "url_type": null | ||
768 | }, | ||||
769 | { | ||||
770 | "cache_last_updated": null, | ||||
771 | "cache_url": null, | ||||
772 | "created": "2021-11-30T00:50:08.477991", | ||||
773 | "datastore_active": false, | ||||
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775 | "description": "**Title:**An initial investigation into the | ||||
776 | sources and transport of particulate organic matter in the Nelson | ||||
777 | River system, Manitoba\r\n\r\n**Abstract**\r\n\r\nThe Nelson River, a | ||||
778 | subarctic river in north-central Manitoba, is the largest river | ||||
779 | discharging to Hudson Bay and its watershed has seen extensive | ||||
780 | land-modification in the upper reaches, permafrost thaw in the lower | ||||
781 | reaches, and hydroelectric development throughout. To characterize | ||||
782 | sources of sediment and particulate organic matter (OM) in the Nelson | ||||
783 | River system, and to identify processes influencing its transport to | ||||
784 | Hudson Bay, water quality parameters, Compound-Specific Stable Isotope | ||||
785 | (CSSI) fingerprinting, and Bayesian unmixing models were employed on | ||||
786 | terrestrial and instream samples. Distinct regional, longitudinal, and | ||||
787 | temporal differences in water quality parameters and particulate OM | ||||
788 | sources were observed among all three regions of the Nelson River | ||||
789 | system (upper Nelson River, Rat-Burntwood River, lower Nelson River). | ||||
790 | The application of CSSI fingerprinting and unmixing models showed that | ||||
791 | the dominant sources of OM to suspended sediment in the lower reaches | ||||
792 | of the Nelson River are proximally derived and comprise soils, | ||||
793 | upstream suspended sediment, river bed sediment, and tributary | ||||
794 | suspended sediment.\r\n", | ||||
795 | "format": "PDF", | ||||
796 | "hash": "", | ||||
797 | "id": "714c1c04-7f61-4564-9522-97d29c5b2246", | ||||
798 | "last_modified": null, | ||||
799 | "metadata_modified": "2021-11-30T00:50:08.460506", | ||||
800 | "mimetype": null, | ||||
801 | "mimetype_inner": null, | ||||
802 | "name": "Tassia M. Stainton", | ||||
803 | "package_id": "31740642-18a1-4b3c-b6f0-58082f4404ff", | ||||
804 | "position": 10, | ||||
805 | "resCategory": "documents", | ||||
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808 | "state": "active", | ||||
809 | "url": | ||||
810 | "Staintonhttps://mspace.lib.umanitoba.ca/handle/1993/33788", | ||||
767 | "url_type": null | 811 | "url_type": null | ||
768 | } | 812 | } | ||
769 | ], | 813 | ], | ||
770 | "rightsIdentifier": "CC-BY-4.0", | 814 | "rightsIdentifier": "CC-BY-4.0", | ||
771 | "rightsIdentifierScheme": "SPDX", | 815 | "rightsIdentifierScheme": "SPDX", | ||
772 | "rightsSchemeURI": "https://spdx.org/licenses", | 816 | "rightsSchemeURI": "https://spdx.org/licenses", | ||
773 | "rightsURI": "https://spdx.org/licenses/CC-BY-4.0.html", | 817 | "rightsURI": "https://spdx.org/licenses/CC-BY-4.0.html", | ||
774 | "schemeURI": | 818 | "schemeURI": | ||
775 | "https://www.polardata.ca/pdcinput/public/keywordlibrary", | 819 | "https://www.polardata.ca/pdcinput/public/keywordlibrary", | ||
776 | "state": "active", | 820 | "state": "active", | ||
777 | "subjectScheme": "Polar Data Catalogue", | 821 | "subjectScheme": "Polar Data Catalogue", | ||
778 | "tags": [ | 822 | "tags": [ | ||
779 | { | 823 | { | ||
780 | "display_name": "Climate change", | 824 | "display_name": "Climate change", | ||
781 | "id": "7a73cfd0-cc0f-4a58-93b8-c71202545a3e", | 825 | "id": "7a73cfd0-cc0f-4a58-93b8-c71202545a3e", | ||
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785 | }, | 829 | }, | ||
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792 | }, | 836 | }, | ||
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798 | "vocabulary_id": null | 842 | "vocabulary_id": null | ||
799 | }, | 843 | }, | ||
800 | { | 844 | { | ||
801 | "display_name": "Rivers", | 845 | "display_name": "Rivers", | ||
802 | "id": "9e507343-6263-49ba-b1a4-e4fd2902d311", | 846 | "id": "9e507343-6263-49ba-b1a4-e4fd2902d311", | ||
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806 | } | 850 | } | ||
807 | ], | 851 | ], | ||
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811 | ], | 855 | ], | ||
812 | "title": "BaySys Theses and Dissertations", | 856 | "title": "BaySys Theses and Dissertations", | ||
813 | "type": "publication", | 857 | "type": "publication", | ||
814 | "url": null, | 858 | "url": null, | ||
815 | "version": "1.0" | 859 | "version": "1.0" | ||
816 | } | 860 | } |