Wang Yongzhe. 2015: Coseismic slip distribution of the 2011 Tohoku MW9.0 earthquake inferred from GPS and InSAR data. Acta Seismologica Sinica, 37(5): 796-805. DOI: 10.11939/jass.2015.05.008
Citation: Wang Yongzhe. 2015: Coseismic slip distribution of the 2011 Tohoku MW9.0 earthquake inferred from GPS and InSAR data. Acta Seismologica Sinica, 37(5): 796-805. DOI: 10.11939/jass.2015.05.008

Coseismic slip distribution of the 2011 Tohoku MW9.0 earthquake inferred from GPS and InSAR data

More Information
  • Received Date: February 11, 2015
  • Revised Date: May 19, 2015
  • Published Date: August 31, 2015
  • To determine the causative fault slip distribution of the Tohoku MW9.0 earthquake in Japan, the coseismic deformation field of this earthquake was obtained with synthetic aperture radar interferometry (InSAR) technique based on Envisat/ASAR data. With detailed analysis and comparison of different methods used to resample InSAR deformation data, the fringe rate method taking into account spatial coherence of the interferogram was chosen for data resampling. Based on the elastic half-space dislocation model, the slip distribution of causative fault was inverted from InSAR and GPS data using the least squares method. The research results show that the fringe rate with coherence method is more suitable for data resampling of wider range InSAR deformation field, within which there are finite boundaries except fault. The majority of the fault slips occurred mainly in the range of 50 km below the surface, and the maximal slip on the fault is 49.9 m, meanwhile, the moment tensor is 4.89×1022 N·m, the corresponding moment magnitude is MW9.1. All these are consistent well with the results from seismological inversion, suggesting this inversion result in this study is reliable.
  • ARIA. 2011. ARIA GPS displacement data provided by JPL and Caltech[EB/OL]. [2011-08-01]. ftp://sideshow.jpl.nasa.gov/pub/usrs/ARIA/.
    doi: 10.1029/2005RG000183
    doi: 10.1029/2009GL041213
    doi: 10.1029/2012GL051628
    Supersites. 2011. Supersites Tohoku-Oki: GEO's Tohoku-Oki event Supersite website[EB/OL]. [2013-07-31]. http://supersites.earthobservations.org/sendai.php.
    doi: 10.1029/2011GL048701
  • Related Articles

  • Cited by

    Periodical cited type(9)

    1. 曹白伦,洪敏,段勇,匡福江,陈建坤. 2022年汤加火山喷发引起的云南地表气压变化及深井水位响应研究. 大地测量与地球动力学. 2025(01): 97-103 .
    2. 李自芮,要利锐,丁风和,朱鹏涛,余思汗,贺嘉伟. 固原东山坡井地下水类型及水化学特征分析. 地震地磁观测与研究. 2023(01): 92-100 .
    3. 丁风和,车用太,刘耀炜,贺嘉伟. 地震观测井地下水埋藏类型判定方法及依据. 地震研究. 2022(02): 284-289 .
    4. 姚林鹏,吕芳,宫静芝. 山西省地下流体观测井地下水类型综合判定. 地震地磁观测与研究. 2022(02): 115-120 .
    5. 丁风和,贺嘉伟,栾博文,杨学峰,储翔. 宁夏南部及邻区地震观测井地下水埋藏类型综合评价. 地震研究. 2022(04): 599-607 .
    6. 朱鹏涛,丁风和,沈宁,贺嘉伟,李新艳,王晨曦. 海原甘盐池地震观测井水位动态特征分析. 地震工程学报. 2022(06): 1489-1496 .
    7. 陈竞. 如何利用物探测井方法判定含水层. 科技视界. 2021(12): 77-78 .
    8. 姜佳佳,冯建刚,曹玲玲,张昱,张丽琼. 临夏水位高值异常分析及预报效能检验. 高原地震. 2021(01): 7-15 .
    9. 王晓涛,丁风和,贺嘉伟,马云举,马治宁. 宁夏海原红羊井水位、水温同步变化特征分析. 防灾减灾学报. 2020(03): 61-67 .

    Other cited types(2)

Catalog

    Article views (616) PDF downloads (37) Cited by(11)

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return