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A study on the seismogenic structure of the 2016 Zaduo, Qinghai Ms6.2 earthquake using InSAR technology

机译:利用InSAR技术研究2016年青海扎多Ms6.2地震的地震成因。

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摘要

On October 17th,2016,a Ms6.2 earthquake occurred in Zaduo County of Qinghai Province,China.The aim of this study is to use synthetic aperture radar (SAR) technology aboard the Sentinel-1 A satellite to obtain high-resolution co-seismic surface displacement data and then to confirm the geometric parameters of the fault and slip distribution model.To this end,linear and non-linear inversion algorithms based on an elastic half-space dislocation model were used.The results showed that a distributed slip model can explain the surface deformation field measured by InSAR very well.The surface deformation field caused by the earthquake was an oval-shaped region of subsidence with a maximum displacement of 5 cm along the line of sight of the radar waves.This earthquake was mainly the result of a normal-slip fault process with 72°N strike and 65° dip.The slip was mainly concentrated at depths of 9-15 km.The maximum slip was 0.17 m,located at a depth of 12 km.The moment magnitude given by inversion was MwS.9.This was basically in agreement with the moment magnitudes and surface magnitudes measured by USGS and CENC.
机译:2016年10月17日,中国青海省扎多县发生了Ms6.2地震。本研究的目的是利用Sentinel-1 A卫星上的合成孔径雷达(SAR)技术获得高分辨率的联合为此,采用基于弹性半空间位错模型的线性和非线性反演算法,建立了分布滑动模型。地震引起的表面形变场是一个椭圆形的沉降区域,沿雷达波的视线最大位移为5 cm,可以很好地解释地震引起的表面形变场。正常滑移断裂过程,走向走向为72°N,倾角为65°,滑移主要集中在9-15 km的深度。最大滑移为0.17 m,位于12 km的深度。通过逆转MwS.9。这基本上与USGS和CENC测得的力矩大小和表面大小一致。

著录项

  • 来源
    《大地测量与地球动力学(英文版)》 |2017年第5期|342-346|共5页
  • 作者

    Jiangtao Qiu; Xuejun Qiao;

  • 作者单位

    Institute of Seismology,, China Earthquake Administration, Wuhan 430071, China;

    The Second Monitoring and Application Center.China Earthquake Administration, Xi'an 71005China;

    Institute of Seismology,, China Earthquake Administration, Wuhan 430071, China;

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  • 正文语种 eng
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  • 入库时间 2022-08-19 03:54:05
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