| Gravity variation before Kunlun mountain pass western Ms=8.1 earthquake |
| |
| 作者姓名： | 祝意青 王双绪 江在森 朱桂芝 李辉 张永志 |
| |
| 作者单位： | [1]TheSecondCrustalDeformationMonitoringCenter,ChinaSeismologicalBureau,Xi‘an710054,China [2]CenterforAnalysisandPrediction,ChinaSeismologicalBureau,Beijing100036,China [3]InstituteofSeismology,ChinaSeismologicalBureau,Wuhan430071,China |
| |
| 摘 要： | The relation between the gravity variation features and Ms=8.1 earthquake in Qinghai-Xizang monitoring area is analyzed preliminarily,by using spatial dynamic variation results of regional gravity field from absolute gravity and relative gravity observation in 1998 and 2000.The results show that:1)Ms\8.1 earthquake in Kulun mountain pass westem occurred in the gravity variation high gradient near gravity‘s high negative variation;2)The Main tectonic deformation and emnergy accumulation before MS=8.1 earthquake are distributed at south side of the epicenter;3)The range of gravity‘s high negative variation at east of the MS=8.1 earthquake epicenter relatively coincides with that rupture region according to field geology investigation;4)Gravity variation distribution in high negative value region is just consistent with the second shear strain‘s high value region of strain field obtained from GPS observation.
|
| 关 键 词： | 昆仑山 8.1级地震 绝对重力 相对重力 地震构造变形 地震观测 |
| 收稿时间： | 1 July 2002 |
| 修稿时间： | 1 February 2003 |
Gravity variation before Kunlun mountain pass western M S=8.1 earthquake |
| |
| Zhu Yi-qing , Wang Shuang-xu , Jiang Zai-sen , Zhu Gui-zhi , Li Hui and Zhang Yong-zhi.Gravity variation before Kunlun mountain pass western Ms=8.1 earthquake[J].Acta Seismologica Sinica(English Edition),2003,16(3):304-311. |
| |
| Authors: | Zhu Yi-qing Wang Shuang-xu Jiang Zai-sen Zhu Gui-zhi Li Hui and Zhang Yong-zhi |
| |
| Institution: | (1) The Second Crustal Deformation Monitoring Center, China Seismological Bureau, 710054 Xi’an, China;(2) Center for Analysis and Prediction, China Seismological Bureau, 100036 Beijing, China;(3) Institute of Seismology, China Seismological Bureau, 430071 Wuhan, China |
| |
| Abstract: | The relation between the gravity variation features and M
S=8.1 earthquake in Qinghai-Xizang monitoring area is analyzed preliminarily, by using spatial dynamic variation results of
regional gravity field from absolute gravity and relative gravity observation in 1998 and 2000. The results show that: 1)
M
S=8.1 earthquake in Kulun mountain pass western occurred in the gravity variation high gradient near gravity’s high negative
variation; 2) The main tectonic deformation and energy accumulation before M
S=8.1 earthquake are distributed at south side of the epicenter; 3) The range of gravity’s high negative variation at east
of the M
S=8.1 earthquake epicenter relatively coincides with that rupture region according to field geology investigation; 4) Gravity
variation distribution in high negative value region is just consistent with the second shear strain’s high value region of
strain field obtained from GPS observation.
Foundation item: The Development and Planning Project of National Important Base Research (G1998040703) |
| |
| Keywords: | absolute gravity relative gravity M S=8 1 earthquake tectonic deformation |
| 本文献已被 维普 SpringerLink 等数据库收录！ |
