| 从重复重力测量资料中用场论方法提取孕震信息的探讨 |
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| 引用本文： | 祝意青,张伯宏,巩守文.从重复重力测量资料中用场论方法提取孕震信息的探讨[J].防灾减灾工程学报,1997(3). |
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| 作者姓名： | 祝意青 张伯宏 巩守文 |
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| 作者单位： | 国家地震局第二地形变监测中心 |
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| 摘 要： | 根据重力场非潮汐变化的波长特征讨论了由重复重力测量结果中提取地震前兆场信息的可能性。文中提出并应用场论理论中重力梯度场变化的二维散度可突出与地震有比较直接关系的孕震信息。通过对北祁连河西地区几次强震的分析研究，认为重力散度较好地反映了地震发生前震源区的孕震特征，是一种值得进一步研究的方法。
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| 关 键 词： | 重力复测 地震孕育 场论 |
PROBING INTO INFORMATION ON SEISMOGENIC INFORMATION EXTRACTED FROM REPEATED GRAVIMETRIC DATA USING METHOD OF FIELD THEORY |
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| Zhu Yiqing,Zhang Bohong,Gong Shouwen.PROBING INTO INFORMATION ON SEISMOGENIC INFORMATION EXTRACTED FROM REPEATED GRAVIMETRIC DATA USING METHOD OF FIELD THEORY[J].Journal of Disaster Prevent and Mitigation Eng,1997(3). |
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| Authors: | Zhu Yiqing Zhang Bohong Gong Shouwen |
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| Abstract: | Based on the characteristics of non tide gravity change wave lengths, the possibility of extracting seismogenic precursory information from repeated gravimetric data is discussed. Taking two dimensional divergence of gravity horizontal gradient field change, the long wave components of gravity changes can be effectively filtered out and the short wave components related more directly to earthquake preparation are kept and highlighted. The research on several earthquake examples in northen Qilian Hexi area show that the two dimensional divergence of horizontal gradient of gravity changes may fairly reflect the preseismic focal characteristics. The method used in this paper is worth for further study. |
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| Keywords: | repeated gravimetry earthquake preparation field theory |
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