USAP-DC

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Mapping Antarctic Subglacial Water with Novel Electromagnetic Techniques Short Title: SALSA-EM Start Date: 2017-12-01 End Date: 2022-11-30 Project Website(s) Description/Abstract During November 2018 to January 2019 we carried out an extensive geophysical survey on the Whillans Ice Stream in West Antarctica. Our survey is the first to use magnetotelluric (MT) imaging to map subglacial groundwater water beneath an ice stream. We collected a total of 44 passive MT stations, as well as several active-source electromagnetic (EM) stations using a large loop transmitter system. These data will be used to study the distribution of groundwater at the base of the ice stream at both the grounding line where the ice stream turns into the Ross Ice Shelf and at Whillans Subglacial Lake. We also serviced a few long term GPS stations that have been recording data for several years and that have been used to track transient changes in ice velocity associated with basal water filling and draining in subglacial lakes. Personnel Person Role Key, Kerry Investigator and contact Fricker, Helen Investigator Siegfried, Matt Investigator Gustafson, Chloe Researcher Funding Antarctic Glaciology Award # 1643917 AMD - DIF Record(s) USAP-1643917_1 Deployment Deployment Type Camp 20 field camp SLW field camp Data Management Plan None in the Database Product Level: 1 (processed data) Datasets Repository Title (link) Format(s) Status USAP-DC Wideband magnetotelluric responses from Whillans Ice Stream, West Antarctica Not Provided exists Keywords Amd/Us GEOMAGNETIC INDUCTION GROUND WATER Whillans Ice Stream Platforms and Instruments FIELD SURVEYS