Intermediate-depth earthquakes beneath the Pamir-Hindu Kush region: Evidence for collision between two opposite subduction zones
Intermediate-depth earthquakes beneath the Pamir-Hindu Kush region: Evidence for collision between two opposite subduction zones
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DOI：
10.1007/s11589-009-0659-0
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发表时间：
2009-12
影响因子：
1.2
通讯作者：
X. Lou;C. Cai;Chunquan Yu;J. Ning
中科院分区：
文献类型：
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作者：
X. Lou;C. Cai;Chunquan Yu;J. Ning
我们采用双差算法 (hypoDD) 对国际地震中心 (ISC) 报告的 1964 年至 2003 年期间以 66°E–78°E 和 32°N–42°N 为界的区域内的地震进行了重新定位。改进后的震源位置在兴都库什中间地震带东部划定了双层瓦达蒂-贝尼奥夫带。基于这一特征和其他证据，我们提出帕米尔-兴都库什地区下的中深度地震可能发生在两个倾角方向相反的碰撞俯冲带中。
We employed a double-difference algorithm (hypoDD) to relocate earthquakes within the region bounded by 66°E–78°E and 32°N–42°N in the period of 1964–2003 reported by the International Seismological Center (ISC). The improved hypocentral locations delineate a double-layered Wadati-Benioff zone in the eastern Hindu Kush intermediate seismic belt. Based on this feature and other evidences, we propose that the intermediate-depth earthquakes beneath the Pamir-Hindu Kush region may occur in two collided subduction zones with opposite dip directions.