Seafloor displacement at Kumano-nada caused by the 2004 off Kii Peninsula earthquakes, detected through repeated GPS/Acoustic surveys
Seafloor displacement at Kumano-nada caused by the 2004 off Kii Peninsula earthquakes, detected through repeated GPS/Acoustic surveys
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DOI：
10.1186/bf03351996
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发表时间：
2006-01-01
影响因子：
3
通讯作者：
Tabei, Takao
中科院分区：
文献类型：
--
作者：
Kido, Motoyuki;Fujimoto, Hiromi;Tabei, Takao
从2004年开始，我们在南海海槽熊野那田开始使用GPS/声学技术监测地壳形变。在2004年8月和11月的两次调查活动之间，我们观察到与2004年9月发生的纪伊半岛外地震相关的30 cm左右的大的向南sealoor位移。观测到的海底位移大于仅从陆地上的GPS测量得出的滑动模型预测的位移。这可能表明地震断层比以前估计的要浅一些，并向西北方向延伸。
In 2004, we started monitoring crustal deformation at Kumano-nada in the Nankai trough using the GPS/Acoustic technique. We observed a large southward sealloor displacement of similar to 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.