Gravity changes associated with the m(s)8. 0 wenchuan earthquake detected by grace
文献类型：期刊论文
| 作者 | Wang Wu-Xing1,2; Shi Yao-Lin2; Gu Guo-Hua1; Zhang Jing1; Chen Shi3 |
| 刊名 | Chinese journal of geophysics-chinese edition
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 53期号:8页码:1767-1777 |
| 关键词 | Wenchuan earthquake Sumatra earthquake Grace satellites Change in gravity Gps Displacement |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2010.08.002 |
| 通讯作者 | Wang wu-xing(bkwwx@seis.ac.cn) |
| 英文摘要 | Time variable changes in gravity field on and around chinese mainland before and after the wenchuan m(s)8. 0 earthquake are obtained from the grace satellite gravity data. time series of gravity changes at typical locations are also obtained. at the same time, time series of displacements at gps fiducial stations of wush, lhas, kunm and luzh are obtained in the regional reference frame. results from grace indicate that after the sumatra earthquake along the himalaya arc the satellite gravity showed rapid decrease, particularly during the period of 2006 to 2008 the decrease in gravity was significant; while along the northwestern boundary of the xiyu block there was also significant post seismic decrease in gravity. and along the northern and eastern boundaries of the tibetan plateau there appeared an arc along the tectonic boundary with significant gravity increase in 2007. but in 2008 there was also significant increase in gravity in the southern and middle segments of the north-south seismic belt. this trend in gravity variations after the sumatra earthquake changed only after the wenchuan earthquake. displacements at 4 gps stations recorded coseismic signals of the great sumatra earthquake, and then the horizontal displacement vectors at wush, lhas and kunm showed significant changes in their general trend until the occurrence of the wenchuan m(s)8. 0 earthquake. the changes in the density of the ground mass in the tibetan plateau and the surrounding areas as revealed by the grace satellites have provided new observation approach and data for the explanation of the dynamic mechanism of the wenchuan earthquake. a preliminary explanation and discussion on the characteristics of the time variable changes in the gravity field observed by grace and the dynamic mechanism of the wenchuan earthquake are presented in this paper by combining the features of regional tectonic movements and displacements of gps observations. |
| WOS关键词 | DEFORMATION ; CHINA ; ZONE |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000281331800002 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2411434 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang Wu-Xing |
| 作者单位 | 1.China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China 2.Chinese Acad Sci, Grad Univ, Lab Computat Geodynam, Beijing 100049, Peoples R China 3.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Wu-Xing,Shi Yao-Lin,Gu Guo-Hua,et al. Gravity changes associated with the m(s)8. 0 wenchuan earthquake detected by grace[J]. Chinese journal of geophysics-chinese edition,2010,53(8):1767-1777. |
| APA | Wang Wu-Xing,Shi Yao-Lin,Gu Guo-Hua,Zhang Jing,&Chen Shi.(2010).Gravity changes associated with the m(s)8. 0 wenchuan earthquake detected by grace.Chinese journal of geophysics-chinese edition,53(8),1767-1777. |
| MLA | Wang Wu-Xing,et al."Gravity changes associated with the m(s)8. 0 wenchuan earthquake detected by grace".Chinese journal of geophysics-chinese edition 53.8(2010):1767-1777. |
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来源：中国科学院大学
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