Overview
- Peer-reviewed research in Geophysical Research Letters cataloged 362 Antarctic glacial earthquakes between 2010 and 2023.
- About 245 events clustered near Thwaites’ marine edge and are interpreted as icebergs capsizing after calving.
- Many tremors coincided with periods of faster flow at Thwaites, hinting at links to changing ocean or sub-ice conditions.
- Additional events near Pine Island Glacier occurred 30–50 miles inland, leaving their cause unresolved.
- The team used in-continent seismic stations to detect low-frequency signals missed by global networks and urges follow-up work to gauge glacier stability and sea-level risk.