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On November 6, 2021 at 4:34:51 PM CDT, claire Claire Herbert:

  • Updated description of 2017 Winter Churchill River and Mobile Ice Survey from

    In late September 2016, five oceanographic moorings were deployed in the eastern Hudson Bay and at the entrance to James Bay(Figure 1). These moorings were supposed to be recovered in summer 2017 during the BaySys cruise onboard CCGS Amundsenor White Diamond-a vessel refurnished in 2017 for the Churchill Marine Observatory. Later, a decision on turning the moorings from White Diamondinstead of recovery was made. Unfortunately, the slow progress of ship’s inspection from Transport Canada caused multiple delays of ship’s departure from Prince Edward Island and the 2017 cruise was cancelled. Because of the critical role of these mooringsfor the scientific objectives of oncoming Amundsencruise in spring 2018, the opportunistic cruise onboard CCGS Henry Larsenwas conducted in October 26 –November 1, 2017 in order to maintain the uninterrupted measurements. The goals for this short cruise were to retrieve and re-deploy as many BaySys moorings as possible accompanied with the concurrent CTD and water sampling.
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    A series of focused field programs took place within Hudson Bay during 2017 to provide a time series of winter and summer observations in Hudson Bay. The first of these field programs was a winter survey of the Churchill River estuary and mobile ice pack offshore from Cape Churchill in Southwestern Hudson Bay. Nine participants from four of the five teams that comprise BAYSYS spent two weeks in Churchill to conduct in situ sampling of the ice and underlying water column, while also deploying an array of autonomous equipment to collect a longer temporal dataset of key variables both in the estuary and in the mobile ice pack. Scientists stayed at the Churchill Northern Studies Centre (CNSC) who provided snowmobiles for the estuary sampling (Sites in Figure 1), while two A-Star helicopters form Great Slave Helicopters were used to access the offshore ice pack.


  • Changed value of field campaignStartDate to 2017-02-01 in 2017 Winter Churchill River and Mobile Ice Survey


  • Changed value of field campaignEndDate to 2017-02-15 in 2017 Winter Churchill River and Mobile Ice Survey


  • Changed value of field researchArea to churchill in 2017 Winter Churchill River and Mobile Ice Survey