A Sea Ice Entrapment Event in the Southern Chukchi Sea: Analysis and Prediction
Abstract Amplified Arctic warming is reducing sea ice cover, which is driving an increase in geopolitical interest in the region as it offers the possibility of reducing shipping times between Asia, Europe, and eastern North America, at the risk of increased ice hazards. Here, we examine the case of the Norseman II research ship that was trapped by sea ice in the southern Chukchi Sea for 14 days in June 2024. This is the first study of its sort in this region. We show that anomalously thick and extensive sea ice was present north of the region prior to the event, and that strong northerly winds in early June advected this ice southward, trapping the ship. Later in June, southerly winds advected ice northwards away from the ship, helping to free it. We further show that the event was forecastable.
Authors
- Jinlun Zhang (ORCID: https://orcid.org/0000-0001-6039-7570)
- G. W. K. Moore (ORCID: https://orcid.org/0000-0002-3986-5605)
- William S. Beatty (ORCID: https://orcid.org/0000-0003-0013-3113)
- Thomas J. Ballinger (ORCID: https://orcid.org/0000-0002-8722-1927)
- Axel Schweiger (ORCID: https://orcid.org/0000-0002-8704-4123)
- Irina S. Trukhanova (ORCID: https://orcid.org/0000-0001-9058-4481)
- Michael Steele
- Michael Lawson (ORCID: https://orcid.org/0009-0009-6674-0806)
- Scott Hameister
Institutions
- United States Geological Survey (US)
- United States Fish and Wildlife Service (US)
- University of Alaska Fairbanks (US)
- University of Toronto (CA)
- University of Washington (US)
- Pacific Environment (US)
- Johns Hopkins University Applied Physics Laboratory (US)
- NOAA National Weather Service (US)
- Institute of Brain and Blood Vessels (JP)
Publication Details
- Journal
- Geophysical Research Letters
- Published
- 2026-06-27
- DOI
- https://doi.org/10.1029/2025gl121181
- Primary Topic
- Arctic and Antarctic ice dynamics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Aeronautics and Space Administration
- University of Alaska Fairbanks
- Natural Sciences and Engineering Research Council of Canada
- Office of Naval Research