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| 引用本文： | 徐海军,张永志,段虎荣. ӡ��Ms6.8���������������仯�����о�[J]. 大地测量与地球动力学, 2012, 32(1): 10-12 |
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| 作者姓名： | 徐海军 张永志 段虎荣 |
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| 作者单位： | 1. 长安大学地质工程与测绘学院,西安,710054
2. 西安科技大学测绘与科学技术学院,西安710054;陕西铁路职业技术学院测绘工程系,渭南714000 |
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| 基金项目： | 国家自然科学基金面上项目，中央高校基本科研业务费专项，长安大学基础研究支持计划专项基金，陕西省科学基础研究计划项目 |
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| 摘 要： | ????GRACE??????????????3??????????????2011??07??09????????????????????仯??????????????2009???2010??????????仯??????б???????????2009???о????????????仯??????????μ????????????????????????仯????????4??10 -8 ms -2??????????????????????????????2010??????????仯??С??2011??????????????仯??????????????2009??仯???6??10 -8 ms -2 ????????????????仯???????
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| 关 键 词： | GRACE ?????? ?????? ?????? ?????? |
GRAVITY VARIATION DETECTED BY GRACE IN INDIAN Ms6.8 EARTHQUAKE REGION |
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| Xu Haijun , Zhang Yongzhi , Duan Hurong. GRAVITY VARIATION DETECTED BY GRACE IN INDIAN Ms6.8 EARTHQUAKE REGION[J]. Journal of Geodesy and Geodynamics, 2012, 32(1): 10-12 |
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| Authors: | Xu Haijun Zhang Yongzhi Duan Hurong |
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| Affiliation: | 2,3)( 1)Institute of Geological Engineering and Geomatics,Chang’an University,Xi’an 710054 2)College of Geomatics,Xi’an University of Science and Technology,Xi’an 710054 3)Shaanxi Railway Institute,Weinan 714000) |
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| Abstract: | The gravity variations were computed in Indian earthquake region(76°~96°E,16°~36°N) with GRACE data observed from July to September in 2009,2010 and 2011 respectively taking the GRACE GGM03C gravity field model as a reference and then the monthly gravity variations of Indian mainland before and after the Gaussian smoothing were compared between each other.The computed result is the most reasonable when the radius of the Gaussian smoothing is 600 km.The results show that the gravity variation of the studied area was positive in 2009.The gravity variation changed more than 4×10-8ms-2 in New Delhi,Bhopal and Sikkim districts.In 2010,it was smaller than that in the same time,2009.The gravity variation change at the epicenter was of almost 6×10-8ms-2 in 2011 than that in 2009.The strong earthquake occurred within the steep gradient zone. |
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| Keywords: | GRACE gravity field Gaussian smoothing India earthquake crustal stress |
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