Reexamination of the interplate coupling in the Tokai region, central Japan, based on the GPS data in 1997–2002
Reexamination of the interplate coupling in the Tokai region, central Japan, based on the GPS data in 1997–2002
复制标题
基于1997-2002年GPS数据对日本中部东海地区板间耦合的再考察
DOI:
10.1029/2004gl021404
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发表时间:
2004
影响因子:
5.2
通讯作者:
T. Sagiya
中科院分区:
文献类型:
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作者:
Y. Ohta;F. Kimata;T. Sagiya
We re‐examined the interplate coupling in terms of backslip rate at the Nankai‐Suruga trough beneath the Tokai region with a 3‐dimensional GPS time series and a refined plate boundary model. We reanalyzed the GPS data and reconstructed plate boundary configuration. Then we inverted GPS velocities to infer the interplate coupling during April 1997 to April 2000. Our results show that a maximum back slip rate of 2 cm/yr was found at the depth of 15–25 km around 137.42E, 34.32N. We also estimated interplate coupling for the period from January 2001 to December 2002. This time period coincides with a slow slip event found by Ozawa et al. [2002] . Forward slip up to 3 cm/yr was inferred beneath western region of Lake Hamana. And, we found that the epicenters of low frequency tremors are located there, suggestive of a close connection between the occurrences of the slow slip event (SSE) and low frequency tremors.
DOI:
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发表时间:
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期刊:
影响因子:
--
作者:
通讯作者:
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影响因子:
56.9
作者:
Obara, K
通讯作者:
Obara, K