| 2008年汶川地震前的形变异常及机理解释 |
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| 引用本文： | 张燕,吴云.2008年汶川地震前的形变异常及机理解释[J].武汉大学学报(信息科学版),2010(1). |
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| 作者姓名： | 张燕 吴云 |
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| 作者单位： | 中国地震局地震研究所; |
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| 基金项目： | 武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(08-01-05); 地震科学基金资助项目(A07032); 中国地震局地震研究所所长基金资助项目(IS200726017) |
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| 摘 要： | 2008年5月12日发生了汶川8.0级大地震,震前的定点形变观测值曲线异常很少。震后通过对定点形变观测台站的震前数据进行了深入分析和处理,发现在汶川8.0级地震前存在形变异常,且距震中较近的台站,出现的异常信息的频率较高;距震中稍远的台站,出现的异常信息的频率较低。对这些现象进行了初步的解释。
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| 关 键 词： | 汶川地震 定点形变 小波变换 频率 |
Anomaly of Fixed Deformation Data and Explain Before the 2008 Wenchuan Earthquake |
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| ZHANG Yan WU Yun.Anomaly of Fixed Deformation Data and Explain Before the 2008 Wenchuan Earthquake[J].Geomatics and Information Science of Wuhan University,2010(1). |
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| Authors: | ZHANG Yan WU Yun |
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| Institution: | ZHANG Yan1 WU Yun1(1 Institute of Seismology,China Earthquake Administration,40 Hongshan Road,Wuhan 430071,China) |
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| Abstract: | A Ms 8.0 earthquake struck Wenchuan on 12 May 2008 and anomaly of observation curve of fixed deformation stations is little.After the earthquake observation data before earthquake have been analyzed and processed.The result shows that deformation reveals anomalies before Wenchuan Ms 8.0 earthquake.The frequency of anomalies are high when stations are near from the earthquake epicenter and the frequency are low when stations are far from the earthquake epicenter.Finally the phenomena have been primary explai... |
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| Keywords: | Wenchuan earthquake fixed deformation wavelet transformation frequency |
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