Geodiscovery / Latest News / Upcoming Events / NEW! IODP Exp. 379 Amundsen Sea West Antarctic Ice Sheet History

NEW! IODP Expedition 379 Amundsen Sea West Antarctic Ice Sheet History

The West Antarctic Ice Sheet (WAIS) is largely marine-based, highly sensitive to climatic and oceanographic changes, has had a dynamic history over the last several million years, and if completely melted, could result in a global sea-level rise of 3.3-4.3 m. Expedition 379 will obtain records from the continental shelf and rise of the Amundsen Sea to document WAIS dynamics in an area unaffected by other ice sheets as well and that currently experiences the largest ice loss in Antarctica. The primary objectives include (a) reconstructing the Paleogene to Holocene glacial history of West Antarctica, (b) correlating the Amundsen Sea WAIS-proximal records with global records of ice volume changes and air/seawater temperature proxy records, (c) constraining the relationship between incursions of warm water masses onto the continental shelf and the stability of marine-based ice sheet margins, and (d) reconstructing major WAIS advances onto the middle and outer shelf, including the first ice sheet expansion onto the continental shelf of the Amundsen Sea Embayment and its possible control by the uplift of Marie Byrd Land.

Exp. 379 Amundsen Sea West Antarctic Ice Sheet History map

Exp. 379 Amundsen Sea West Antarctic Ice Sheet History map

Expedition Information

Expedition Dates: 18 January to 20 March 2019

Ports of Call: Punta Arenas to Punta Arenas, Chile

Co-chief Scientists: Karsten Gohl and Julia Wellner

List of scientific participants

Expedition Links

Scientific Prospectus

Operations

Check out the daily reports (TBC) for the latest updates from the expedition!

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