Nonvolcanic deep tremor associated with subduction in southwest Japan
Nonvolcanic deep tremor associated with subduction in southwest Japan
复制标题
DOI：
10.1126/science.1070378
复制
发表时间：
2002-05-31
期刊：
影响因子：
56.9
通讯作者：
Obara, K
中科院分区：
文献类型：
--
作者：
Obara, K
在日本西南部的一个非火山区发现并定位了较深的长周期地震。地震的震中分布在600公里长的俯冲菲律宾海板块的走向上。震源深度平均约为30公里，位于莫霍罗维奇断裂面附近。每一次震动最多只有几周的时间。地震在俯冲带内的位置表明，地震可能是由板岩脱水过程产生的流体引起的。
Deep long-period tremors were recognized and located in a nonvolcanic region in southwest Japan. Epicenters of the tremors were distributed along the strike of the subducting Philippine Sea plate over a length of 600 kilometers. The depth of the tremors averaged about 30 kilometers, near the Mohorovic discontinuity. Each tremor tasted for at most a few weeks. The location of the tremors within the subduction zone indicates that the tremors may have been caused by fluid generated by dehydration processes from the slab.