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| ???-????6.6????????????????仯 | |
| 引用本文： | 郝洪涛,李辉,张志坚.???-????6.6????????????????仯[J].大地测量与地球动力学,2014,34(3):43-47. |
| 作者姓名： | 郝洪涛 李辉 张志坚 |
| 作者单位： | 1）中国地震局地震研究所（地震大地测量重点实验室），武汉 430071 2）中国地震局地壳应力研究所武汉科技创新基地,武汉 430071 3）中国科学院大学，北京 100039 4）甘肃省地震局，兰州 730000 |
| 基金项目： | 中国地震局地震行业专项（201208009，201308009） |
| 摘 要： | ????????2010~2013???????????????????о?????????2013-07-22????????6.6?????????????????仯???????????????????仯????????????????????????????1?????м????????????????????仯????????????????70×10-8ms-2??2??????????????????仯????????????????????????????????????з????????????????仯?????????仯????????????? |
| 关 键 词： | ?????????? ???-??????? ???????仯 ??????? ?????? |
| 收稿时间： | 2013-12-12 |
VARIATION OF GRAVITY-FIELD BEFORE AND AFTER MINXIAN-ZHANGXIAN Ms6.6 EARTHQUAKE |
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| Hao Hongtao,Li Hui,Zhang Zhijian.VARIATION OF GRAVITY-FIELD BEFORE AND AFTER MINXIAN-ZHANGXIAN Ms6.6 EARTHQUAKE[J].Journal of Geodesy and Geodynamics,2014,34(3):43-47. | |
| Authors: | Hao Hongtao Li Hui Zhang Zhijian |
| Institution: | 1）Key Laboratory of Earthquake Geodesy,Institute of Seismology，CEA，Wuhan 430071 2）Wuhan Base of Institute of Crustal Dynamics,CEA，Wuhan 430071 3）University of Chinese Academy of Science，Beijing 100039 4)Earthquake Administration of Gansu Province,Lanzhou 730000 |
| Abstract: | The images of gravity variation before and after the Minxian Zhangxian Ms6.6 earthquake，based on gravity data recorded by the gravity net in Gansu province show that，there are some similar characteristics with other earthquakes：1）Before the earthquake，there was a prominent positive gravity anomaly variation amounting to 70×108ms-2 in the south area of the epicenter；2）After the earthquake，gravity variation in the same area was negative，and the positive gravity anomaly variation disappeared.In addition，we found that the calibrate factors of the instruments could affect the result of gravity variation and should be detected and corrected.Our result could provide some reference to research of mechanism of this earthquake. |
| Keywords: | gravity net in Gansu area Minxian-Zhangxian earthquake gravity variation calibrate factors of the instrument epicentral |
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