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| 引用本文： | 郝洪涛,李辉,胡敏章,郑兵,王同庆,梁伟锋.?????????????????????仯[J].大地测量与地球动力学,2015,35(2):331-335. |
| 作者姓名： | 郝洪涛 李辉 胡敏章 郑兵 王同庆 梁伟锋 |
| 作者单位： | 1〓中国科学院大学地球科学学院,北京市玉泉路甲19号，100049 2〓中国地震局地震研究所（地震大地测量重点实验室）,武汉市洪山侧路40号，430071 3〓中国地震局地壳应力研究所武汉科技创新基地,武汉市洪山侧路40号，430071 4〓四川省地震局测绘工程院，雅安市上坝路139号，625000 5〓中国地震局第一监测中心，天津市耐火路7号，300180 6〓中国地震局第二监测中心，西安市西影路316号，710054 |
| 基金项目： | 中国地震局芦山地震科学考察项目|中国地震局地震研究所所长基金（IS20136121）|国家自然科学基金（41304059） |
| 摘 要： | ??????????????????????????????????????????????????????????????????????????????????仯???????????????1????????????????仯????????????????????????????????????????????????????????????????????????л?????????????仯????????????????????仯???????|2??????????????仯??????????????????|3?????μ?????????????????????????-???ο???????????仯??????????????????????????????????????? |
| 关 键 词： | ?????? ?????仯 ?????仯???? |
| 收稿时间： | 2014-03-16 |
Gravity Variation Observed by Scientific Expedition of Lushan Earthquake |
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| HAO Hongtao,LI Hui,HU Minzhang,ZHENG Bing,WANG Tongqing,LIANG Weifeng.Gravity Variation Observed by Scientific Expedition of Lushan Earthquake[J].Journal of Geodesy and Geodynamics,2015,35(2):331-335. | |
| Authors: | HAO Hongtao LI Hui HU Minzhang ZHENG Bing WANG Tongqing LIANG Weifeng |
| Institution: | HAO Hongtao;LI Hui;HU Minzhang;ZHENG Bing;WANG Tongqing;LIANG Weifeng;College of Earth Sciences,University of Chinese Academy of Science;Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA;Wuhan Base of Institute of Crustal Dynamic,CEA;Surveying Engineering Institute,Earthquake Administration of Sichuan Province;First Crust Monitoring and Application Center,CEA;Second Crust Monitoring and Application Center,CEA; |
| Abstract: | By using gravity data in the area of the scientific expedition of the Lushan earthquake, we have systematically obtained the gravity variation before and after earthquake. The results show that：1) before the earthquake, the area beside the Longmenshan fault shows an obvious anomaly, and some high gradient zones are parallel or vertical with the Longmenshan, Xianshuihe and Daliangshan faults| 2) after the earthquake, gravity variation was opposite in the area beside the Longmenshan fault| 3) heat and bulge of the material of middle and bottom crust probably cause the gravity variation and may be one important trigger factor of the Lushan earthquake. |
| Keywords: | Lushan earthquake gravity variation mechanism of gravity variation |
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