Expeditions

U.S. ice scientists travel to Antarctica, Greenland, and mountain ranges around the world to conduct fieldwork in some of the harshest conditions on Earth. Below you can find information about current and upcoming fieldwork as well as completed fieldwork.

 

Current and Upcoming Fieldwork

2021-2022 Antarctic

Ground Geophysics Survey of Thwaites Glacier

This project contributes to the joint initiative launched by the U.S. National Science Foundation (NSF) and the U.K. Natural Environment Research Council (NERC) to substantially improve decadal and longer-term projections of ice loss and sea-level rise originating from Thwaites Glacier in West Antarctica. The objectives of the project are to learn whether basal conditions allow for rapid retreat of the Thwaites Glacier grounding line or whether retreat may re-stabilize near its current grounding line. These objectives will be achieved by using dedicated ice-flow modeling to guide targeted field surveys and experiments over two seasons, and to measure the most important unknown quantities and incorporate them into the models. Numerical models will be used to generate hypotheses for basal conditions that are testable through geophysical surveys and to project future behavior of Thwaites Glacier after assimilating the resulting data. The geophysical methods include seismic, radar, gravity, and electrical surveys that together will allow for a fuller characterization of the bed. The project will conduct field surveys in areas representative of different parts of the glacier, including across the margins, near the grounding line, and along the central axis of the glacier into its catchment. The Rapid Air Movement (RAM) Drill and Small Hot Water Drill will be used to create the shot holes required for the seismic measurements.