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Authors: Olivieri, M.*
Spada, G.*
Title: Ice melting and earthquake suppression in Greenland
Title of journal: Polar science
Series/Report no.: /9 (2015)
Publisher: Elsevier Science Limited
Issue Date: 2015
DOI: 10.1016/j.polar.2014.09.004
Keywords: Greenland
Ice sheet melting
Abstract: It has been suggested that the Greenland ice sheet is the cause of earthquake suppression in the region. With few exceptions, the observed seismicity extends only along the continental margins of Greenland, which almost coincide with the ice sheet margin. This pattern has been put forward as further validation of the earthquake suppression hypothesis. In this review, new evidence in terms of ice melting, post-glacial rebound and earthquake occurrence is gathered and discussed to re-evaluate the connection between ice mass unloading and earthquake suppression. In Greenland, the spatiotemporal distribution of earthquakes indicates that seismicity is mainly con- fined to regions where the thick layer of ice is absent and where significant ice melting is presently occurring. A clear correlation between seismic activity and ice melting in Greenland is not found. However, earthquake locations and corresponding depth distributions suggest two distinct governing mechanisms: post-glacial rebound promotes moderate-size crustal earthquakes at Greenland’s regional scale, while current ice melting promotes shallow low magnitude seismicity locally
Appears in Collections:02.02.05. Ice dynamics
Papers Published / Papers in press

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