Seasonality and increasing frequency of Greenland glacial earthquakes

Creators: Ekström, Göran; Nettles, Meredith; Tsai, Victor C.

Abstract

Some glaciers and ice streams periodically lurch forward with sufficient force to generate emissions of elastic waves that are recorded on seismometers worldwide. Such glacial earthquakes on Greenland show a strong seasonality as well as a doubling of their rate of occurrence over the past 5 years. These temporal patterns suggest a link to the hydrological cycle and are indicative of a dynamic glacial response to changing climate conditions.

Additional Information

© 2006 American Association for the Advancement of Science. Received 1 November 2005; accepted 9 January 2006. Supported by National Science Foundation grants EAR-0207608 and OPP-0352276 and a National Science Foundation Graduate Fellowship (V.C.T.). The seismic data were collected and distributed by the Incorporated Research Institutions for Seismology and the U.S. Geological Survey.

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Resource type: Journal Article
Publisher: American Association for the Advancement of Science
Published in: Science, 311(5768), 1756-1758, ISSN: 0036-8075.

Created:: August 19, 2023
Modified:: October 26, 2023