Viscoelastic deformations after the 2006-2007 Simushir earthquakesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 мая 2014 г.
Аннотация:Continuous measurements at the Kuril GPS network since 2006 have revealed anomalous coseismic and postseismic displacements of the Earth’s crust, which accompanied the great 2006-2007 earthquake doublet in the central Kuriles and were observed during 2. 5 years after the events. Prior to the earthquakes, all observation sites of the Kuril network were moving towards the continent due to the subduction deformation of the continental margin. After the events, the direction of displacement had changed to the opposite direction at the stations located on the Matua, Ketoy, and Kharimkotan Islands, which were the nearest to the seismic events, and experienced a significant turn on the Urup Island nearby. Modeling of postseismic viscoelastic relaxation of strains in the asthenosphere suggested an acceptable explanation for the long-term anomalous offsets revealed. By solving the corresponding inverse problems, we estimated the viscosity of the upper mantle and constrained the slip distribution of the 2006 Simushir earthquake. ┬й 2011 Pleiades Publishing, Ltd.