蔡华, 孙汉荣, 赵齐乐, 李鹏. GPS测定的2011年日本9.0级地震的中国大陆地区同震位移场[J]. 武汉大学学报 ( 信息科学版), 2012, 37(8): 953-955.
引用本文: 蔡华, 孙汉荣, 赵齐乐, 李鹏. GPS测定的2011年日本9.0级地震的中国大陆地区同震位移场[J]. 武汉大学学报 ( 信息科学版), 2012, 37(8): 953-955.
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CAI Hua, SUN Hanrong, ZHAO Qile, LI Peng. Cosesimic Displacement Filed of Continental Area of China Associated with the Mw 9.0 Japan Earthquake in 2011 by GPS[J]. Geomatics and Information Science of Wuhan University, 2012, 37(8): 953-955.
Citation: CAI Hua, SUN Hanrong, ZHAO Qile, LI Peng. Cosesimic Displacement Filed of Continental Area of China Associated with the Mw 9.0 Japan Earthquake in 2011 by GPS[J]. Geomatics and Information Science of Wuhan University, 2012, 37(8): 953-955.
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GPS测定的2011年日本9.0级地震的中国大陆地区同震位移场

Cosesimic Displacement Filed of Continental Area of China Associated with the Mw 9.0 Japan Earthquake in 2011 by GPS

    摘要
  • 摘要: 利用陆态网络东北地区的6个GPS基准站地震期间的观测数据反演了日本本州东海岸9.0级强震区域地表的瞬时形变过程,应用160多个陆态网络基准站以及IGS跟踪站的GPS观测数据解算获得中国大陆地区的远场同震位移。将测站按照中国大陆主要构造带(区)进行分配统计可知,东北地区同震位移最大,平均接近20mm;首都圈与郯-庐带及周围地区平均同震位移也在10mm左右;距离震中比较远的鄂尔多斯及周围、阿尔金-祁连山-阿拉善、新疆等地区也受到了该地震的影响,在东方向发生了5mm左右的位移,并且以上地区的优势方向都为东方向;而本次地震对中国的华南(包括南海)以及青藏等地区基本没有影响。这些解算结果对进一步研究地震动力学特征及判定未来地震趋势提供了详实的实测依据。

     

    Abstract: The Mw 9.0 Japan Earthquake occurred in east coast of Japan in March 11,2011.Surface deformation process of Northeast area of China is inversed with the data of 6 GPS stations from CMONOC.Far-field cosesimic displacement filed of continental area of China is determined with the data of 160 GPS stations of CMONOC.The results indicate that cosesimic displacement of NorthEast area of China is the largest,on the average close to 20 mm,the average cosesimic displacement of Beijing and surrounding area is close to 10 mm,far-field area average is close to 5 mm,the major direction is east.This earthquake has no effect on South China(including the South China Sea) and the Qinghai-Tibet area of China.The results will be helpful for the research of dynamic characteristic of earthquakes and determination of the tendency of future earthquakes.

     

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