2010 Maule earthquake slip correlates with pre-seismic locking of Andean subduction zone

Marcos Moreno, Matthias Rosenau and Onno Oncken ()
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Marcos Moreno: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany
Matthias Rosenau: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany
Onno Oncken: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany

Nature, 2010, vol. 467, issue 7312, 198-202

Abstract: Mind the seismic gap Analysis of seismic data and Global Positioning System (GPS) observations from the region around the site of the recent magnitude-8.8 Maule earthquake in Chile have been combined with modelling of the Andean subduction zone to build up a detailed image of the event. The earthquake occurred at a 'seismic gap', part of the fault that has not experienced a major earthquake since 1835, and it seems to have released most of the stress accumulated since that time. The observations suggest that coseismic slip heterogeneity at the scale of single asperities, and therefore the seismic potential of future great earthquakes, might be anticipated by geodetic observations.

Date: 2010
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DOI: 10.1038/nature09349

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