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Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data
  • ISSN号:1671-5942
  • 期刊名称:《大地测量与地球动力学》
  • 时间:0
  • 分类:P228.4[天文地球—大地测量学与测量工程;天文地球—测绘科学与技术] P642.26[天文地球—工程地质学;天文地球—地质矿产勘探;天文地球—地质学]
  • 作者机构:[1]Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, China, [2]Institute of Geophysics, China Earthquake Administration, Beijing 100081. China
  • 相关基金:This work is jointly supported by Director Foundation of Institute of Seismology, China Earthquake Administration (IS201426142), National Natural Science Foundation of China (41541029, 41574017, 41274027) and Natural Science Foundation of HuBei Province (2015CFB642).The GPS data used in this work are provided by Crustal Movement Observation Network of China (CMONOC) and UNAVCO.
中文摘要:

2015 年 4 月 25 日 Mw7.8 尼泊尔地震被中国(CMONOC ) 和尼泊尔测地学的数组(NGA ) 的外壳的运动观察网络成功地记录。我们处理了高率的 GPS 数据(1 ? Hz 并且 5 ? Hz ) 由使用相对的运动学的放和导出的动态地面,运动由这大地震引起了。动态排水量时间系列清楚地显示每个车站的排水量振幅与破裂择向性有关。在破裂繁殖的方向定位了的车站比其它有更大的排水量振幅。超过 5 的另外有活力的地面排水量 ? 厘米由是 2000 的 GPS 车站被检测 ? km 离开震中。永久 coseismic 排水量与小浪分解重建方法从近地的高率的 GPS 车站被解决, P 波浪到达也与 S 变换方法被检测。这研究的结果能被用于地震破裂过程和地震早警告研究。

英文摘要:

The April 25, 2015 Mw7.8 Nepal earthquake was successfully recorded by Crustal Movement Observation Network of China (CMONOC) and Nepal Geodetic Array (NGA). We processed the high-rate GPS data (1 Hz and 5 Hz) by using relative kinematic positioning and derived dynamic ground motions caused by this large earthquake. The dynamic displacements time series clearly indicated the displacement amplitude of each station was related to the rupture directivity. The stations which located in the di- rection of rupture propagation had larger displacement amplitudes than others. Also dynamic ground displacement exceeding 5 cm was detected by the GPS station that was 2000 km away from the epicenter. Permanent coseismic displacements were resolved from the near-field high-rate GPS stations with wavelet decomposition-reconstruction method and P-wave arrivals were also detected with S transform method. The results of this study can be used for earthquake rupture process and Earthquake Early Warning studies.

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期刊信息
  • 《大地测量与地球动力学》
  • 北大核心期刊(2011版)
  • 主管单位:中国地震局
  • 主办单位:中国地震局地震研究所 地壳运动监测工程研究中心 中国地震局地壳应力研究所等
  • 主编:姚运生
  • 地址:湖北省武汉市武昌区洪山侧路40号
  • 邮编:430071
  • 邮箱:jgg09@public.wh.hb.cn
  • 电话:027-87864009 87667622
  • 国际标准刊号:ISSN:1671-5942
  • 国内统一刊号:ISSN:42-1655/P
  • 邮发代号:38-194
  • 获奖情况:
  • 92年、96年获中国地震局优秀期刊奖
  • 国内外数据库收录:
  • 美国剑桥科学文摘,中国中国科技核心期刊,中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:9069