BIP! Finder - Complex force history of a calving‐generated glacial earthquake derived from broadband seismic inversion

2016 • Complex force history of a calving‐generated glacial earthquake derived from broadband seismic inversion

Authors: Amandine Sergeant, Anne Mangeney, Eléonore Stutzmann, Jean-Paul Montagner, Fabian Walter, Laurent Moretti, Olivier Castelnau

Venue: Geophysical Research Letters

Type: Publication

Abstract: The force applied to the Earth by the calving of two icebergs at Jakobshavn Isbrae, Greenland, has been quantified. The source force history was recovered by inversion of regional broadband seismograms without any a priori constraint on the source time function, in contrast with previous studies. For periods 10-100 s, the three-component force can be obtained from distant stations alone and is proportional to the closest station seismograms. This inversion makes it possible to quantify changes of the source force direction and amplitude as a fu... (read more)

Topics: Seismology Geophysics

DOI: 10.1002/2015gl066785

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External links: Crossref , OpenAIRE

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