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首页> 外文期刊>Journal of geodynamics >Coseismic and postseismic slip models of the 2011 Van earthquake, Turkey, from InSAR, offset-tracking, MAI, and GPS observations
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Coseismic and postseismic slip models of the 2011 Van earthquake, Turkey, from InSAR, offset-tracking, MAI, and GPS observations

机译：来自InSAR，偏移跟踪，MAI和GPS观测的2011年土耳其范克地震的同震和震后滑动模型

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摘要

We derived the coseismic and postseismic slip models of the 2011 Van earthquake from multi-source geodetic datasets, including interferometric synthetic aperture radar (InSAR), multi-aperture InSAR (MAI), offset-tracking, and GPS measurements. The constrained least squares algorithm and Laplacian smoothing were used to estimate and regularize the slip distribution. The coseismic slip model suggested two nearly W-E striking segment faults breaking during the Van event. Two main slip concentrations were found to to be located at depths ranging from 7 km to 20 km. The estimated moment reached 6.08 x 10(19) Nm (equal to an Mw 7.19 event). A stress change analysis showed that the main shock imposed an up to similar to 5 bars stress load on the causative fault of the 9 November aftershock, implying a triggering mechanism between the two events. The postseismic slips of the Van earthquake were dominated by shallow left-lateral and deep thrust components. The slips distributed in most of the unruptured area of the fault plane. The accumulated postseismic moment reached 2.04 x 10(19) Nm, which was about 34% of the main shock moment. We conclude that the future seismic hazard will be relatively low in this area. (C) 2015 Elsevier Ltd. All rights reserved.
机译：我们从多源大地测量数据集（包括干涉合成孔径雷达（InSAR），多孔径InSAR（MAI），偏移跟踪和GPS测量）得出了2011年范地震的同震和震后滑动模型。约束最小二乘算法和拉普拉斯平滑法用于估计和规范滑移分布。同震滑移模型表明在Van事件中发生了两个近W E震荡的断层断裂。发现两个主要滑移集中在7 km至20 km的深度。估计时刻达到6.08 x 10（19）Nm（等于Mw 7.19事件）。应力变化分析表明，主震在11月9日余震的致病性断层上施加了高达5 bar的应力载荷，这暗示着这两个事件之间的触发机制。范地震的地震后滑移主要由浅的左旋分量和深的逆冲分量组成。滑移分布在断层平面的大部分未破裂区域。累积的地震后力矩达到2.04 x 10（19）Nm，约为主冲击力矩的34％。我们得出结论，该地区未来的地震危害将相对较低。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Journal of geodynamics》 |2015年第11期|39-50|共12页
  • 作者

    Wang Chisheng; Ding Xiaoli; Li Qingquan; Shan Xinjian; Zhu Wu; Guo Bo; Liu Peng;

  • 作者单位

    Shenzhen Univ, Shenzhen Key Lab Spatial Informat Smart Sensing &, Shenzhen, Peoples R China|Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hung Hum, Hong Kong, Peoples R China;

    Shenzhen Univ, Shenzhen Key Lab Spatial Informat Smart Sensing &, Shenzhen, Peoples R China|Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hung Hum, Hong Kong, Peoples R China;

    Shenzhen Univ, Shenzhen Key Lab Spatial Informat Smart Sensing &, Shenzhen, Peoples R China;

    China Earthquake Adm, State Key Lab Earthquake Dynam, Inst Geol, Beijing, Peoples R China;

    Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hung Hum, Hong Kong, Peoples R China;

    Shenzhen Univ, Shenzhen Key Lab Spatial Informat Smart Sensing &, Shenzhen, Peoples R China;

    Shenzhen Univ, Shenzhen Key Lab Spatial Informat Smart Sensing &, Shenzhen, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Van earthquake; Coseismic; Postseismic; Slip model; SAR geodesy;

    机译：范地震;地震;后地震;滑动模型;SAR大地测量;

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