Slow slip below Port Blair, Andaman, during the great Sumatra-Andaman earthquake of 26 December 2004
Por:
Singh S.K., Ortiz M., Gupta H.K., Ramadass D.G.A.
Publicada:
1 ene 2006
Resumen:
Although several studies suggest that a slow slip followed the seismic slip on the northern half of the 1300-km long plate interface that ruptured during the great Sumatra-Andaman earthquake, the onset and duration of the slow slip remain unresolved. In this paper we analyze a tide gauge record at Port Blair, situated about 1000 km north of the epicenter. Our preferred model, which fits the observed data well, consists of a mixed mode of slip: ?half of the total slip occurring seismically in less than 5 min after the rupture arrival and the rest developing in the next 30 min. A scenario of slow slip on the northern half of the rupture area, that is consistent with seismic data, and GPS data, consists of slip on the time scale of <35 min over some parts of the fault, such as below Port Blair, and > 1 hour over the rest. Copyright 2006 by the American Geophysical Union.
Filiaciones:
Singh S.K.:
Instituto de Geofísica, Universidad Nacional Autónoma de México, Ciudad Universitaria, México D.F. 04510, Mexico
Ortiz M.:
Departamento de Oceanografía, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Ensenada, BC 22860, Mexico
Gupta H.K.:
National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
Ramadass D.G.A.:
National Institute of Ocean Technology, Velachery-Tabaram Main Road, Chennai 601 301, India
All Open Access; Bronze
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