Author:
Kido Motoyuki,Fujimoto Hiromi,Miura Satoshi,Osada Yukihito,Tsuka Kentaro,Tabei Takao
Abstract
Abstract
In 2004, we started monitoring crustal deformation at Kumano-nada in the Nankai trough using the GPS/Acoustic technique. We observed a large southward seafloor displacement of ∼30 cm associated with the off Kii Peninsula earthquake, which occurred in September 2004, between our two survey campaigns in August and November 2004. The observed seafloor displacement is larger than that predicted from a slip model derived solely from GPS measurements on land. This may indicate the earthquake fault is slightly shallower and extends move to the NW than previously estimated.
Publisher
Springer Science and Business Media LLC
Subject
Space and Planetary Science,Geology
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