...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Asian earth sciences >Surface displacements in Japan before the 11 March 2011 M9.0 Tohoku-Oki earthquake
【24h】

Surface displacements in Japan before the 11 March 2011 M9.0 Tohoku-Oki earthquake

机译：2011年3月11日东北大地震M9.0之前日本的地表位移

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Daily resolution data retrieved from the 1243 ground-based Global Positioning System (GPS) stations in Japan are utilized to expose surface displacements before the destructive M9 Tohoku-Oki earthquake (March 11, 2011). Variations in the residual GPS data, in which effects of the long-term plate movements, short-term noise and frequency-dependent variations have been removed through a band-pass filter via the Hilbert-Huang transform, are compared with parameters of the focal mechanism associated with the Tohoku-Oki earthquake for validation. Analytical results show that the southward movements, which were deduced from the residual displacements and agree with the strike of the rupture fault, became evident on the 65th day before the Tohoku-Oki earthquake. This observation suggests that the shear stress played an important role in the seismic incubation period. The westward movements, which are consistent with the angle of the maximum horizontal compressive stress, covered entire Japan and formed an impeded area (142°E, 42°N) about 75 km away from the epicenter on the 47th day prior to the earthquake. The horizontal displacements integrated with the vertical movements from the residual GPS data are very useful to construct comprehensive images in diagnosing the surface deformation from destructive earthquakes along the subduction zone.
机译：从日本的1243个地面全球定位系统（GPS）站获取的每日分辨率数据用于揭示M9东北大地震（2011年3月11日）之前的地面位移。将残余GPS数据的变化与长焦距参数进行比较，在这些变化中，长期板块运动，短期噪声和频率相关变化的影响已通过Hilbert-Huang变换通过带通滤波器消除了东北冲地震相关的机理进行验证。分析结果表明，从残余位移推算出的南向运动与断裂断裂的走向相吻合，这种变化在东北冲绳地震发生前的第65天就很明显了。这一观察结果表明，剪应力在地震潜伏期中起着重要作用。与最大水平压应力的角度一致的向西运动覆盖了整个日本，并在地震发生前第47天形成了一个震区（142°E，42°N），距震中约75公里。来自残余GPS数据的水平位移与垂直运动的整合对于构建诊断沿俯冲带的破坏性地震的地表变形的综合图像非常有用。

著录项

  • 来源
    《Journal of Asian earth sciences》 |2014年第5期|165-171|共7页
  • 作者

    Chieh-Hung Chen; Strong Wen; Jann-Yenq Liu; Katsumi Hattori; Peng Han; Yasuhide Hobara; Chung-Ho Wang; Ta-Kang Yen; Horng-Yuan Yen;

  • 作者单位

    Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi 621, Taiwan;

    National Center for Research on Earthquake Engineering, Taipei 106, Taiwan;

    Institute of Space Science, National Central University, Jhongli 320, Taiwan,Center for Space and Remote Sensing Research, National Central University, Jhongli 320, Taiwan;

    Graduate School of Science, Chiba University, Inage, Chiba 263-8522, Japan;

    Graduate School of Science, Chiba University, Inage, Chiba 263-8522, Japan;

    Department of Communication Engineering and Informatics, Graduate School of Informatics and Eng, UEC, Chofu, Tokyo, Japan,Research Station on Seismo-Electromagnetics, UEC, Chofu, Tokyo, Japan;

    Institute of Earth Sciences, Academia Sinica, Taipei 115, Taiwan;

    Department of Real Estate and Built Environment, National Taipei University, New Taipei City 237, Taiwan;

    Institute of Geophysics, National Central University, Jhongli 320, Taiwan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface displacements; Global positioning system; Hilbert-Huang transform; Tohoku-Oki earthquake;

    机译：表面位移;全球定位系统;Hilbert-Huang变换;东北大地震;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号