| 九寨沟震前地表重力变化向邻近空间高度的解析延拓 |
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| 引用本文： | 郑翀,李辉.九寨沟震前地表重力变化向邻近空间高度的解析延拓[J].大地测量与地球动力学,2020,40(2):170-174. |
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| 作者姓名： | 郑翀 李辉 |
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| 作者单位： | 中国地震局地震研究所地震大地测量重点实验室 |
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| 摘 要： | 以2017年九寨沟7.0级地震为例,使用重力场向上解析延拓算法计算邻近空间中可能与孕震相关的重力变化,以探讨未来邻近空间无人重力测量技术在地震监测应用中的观测精度需求。结果表明,地面上约为70μGal的重力变化在20 km处衰减为18μGal。
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| 关 键 词： | 地震监测 重力测量 向上延拓 邻近空间 |
Upward Continuation of Earth Surface’s Gravity Changes in Height of Near Space before Jiuzhaigou Earthquake |
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| ZHENG Chong,LI Hui.Upward Continuation of Earth Surface’s Gravity Changes in Height of Near Space before Jiuzhaigou Earthquake[J].Journal of Geodesy and Geodynamics,2020,40(2):170-174. |
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| Authors: | ZHENG Chong LI Hui |
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| Institution: | (Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China) |
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| Abstract: | This paper uses the Jiuzhaigou MS7.0 earthquake as an example to discuss the precision of the earthquake monitoring system. The result shows that a change of 70 μGal on earth surface declines to 18 μGal in near space (20 km high) to earth. |
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| Keywords: | earthquake monitoring gravity survey upward continuation near space |
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