YW (2026-2029): Tectonic Influence on the Greenland Ice Sheet

• University of Alabama

My colleagues and I are resubmitting our TIGRIS proposal, which would involve deploying 15 stations near Kangerlussuaq Glacier in eastern Greenland. The stations would be in the field for two years (installed in Summer 2025, serviced in 2026, decommissioned in 2027), and 3-component, polar-rated broadband instruments with associated data loggers (either 3-channel or multi-channel) would be needed for the array. I've also spoken with Kirsten Arnell about co-locating two of our stations with the high-tilt-tolerant Certis instruments that the EPIC will soon receive. This will help ensure good quality data is collected at these potential high-melt-rate sites and will also help to field-test the instruments. Data recorded by TIGRIS will be combined with that from previously and currently operating stations in Greenland and Iceland to develop new high-resolution Earth structure models for all of Greenland. These results will then be used to model how solid-Earth characteristics influence ice-sheet hysteresis and to determine the critical thresholds for ice-sheet recovery under different climate forcing scenarios.

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