| 松潘-平武地震前地震视应变场的时空演变 |
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| 引用本文： | 张彬,杨选辉,易志刚.松潘-平武地震前地震视应变场的时空演变[J].西北地震学报,2007,29(3):235-239. |
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| 作者姓名： | 张彬 杨选辉 易志刚 |
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| 作者单位： | 中国地震局地壳应力研究所,北京,100085 |
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| 摘 要： | 利用松潘-平武周边地区的地震资料研究了1970-1975年该地区地震视应变场的分布和时空变化特征。结果表明,地震视应变的时空变化与松潘-平武强震具有很好的对应关系,1970年在附近就出现异常区,并且地震视应变总体上逐年增加,地震就发生在地震视应变异常区。
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| 关 键 词： | 视应变 地震矩 地震能量 松潘-平武地震 |
| 文章编号： | 1000-0844（2007）03-0235-05 |
| 修稿时间： | 2006-09-06 |
Time-space Evolution of the Seismic Apparent Strain Field before Songpan-Pingwu Earthquakes |
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| ZHANG?Bin,YANG?Xuan-hui and YI?Zhi-gang.Time-space Evolution of the Seismic Apparent Strain Field before Songpan-Pingwu Earthquakes[J].Northwestern Seismological Journal,2007,29(3):235-239. |
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| Authors: | ZHANG?Bin YANG?Xuan-hui and YI?Zhi-gang |
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| Institution: | Instituteof Crustal Dynamics, CEA, Beijing 100085,China |
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| Abstract: | The distribution and space-time change characteristics of the seismic apparent strain field in Songpan-Pingwu and the adjacent areas since 1970 to 1975 are studied,using the seismic data of this region.The result shows that there is a rather well corresponding relationship between the anomalous region of seismic apparent strain and the Songpan-Pingwu earthquakes in 1976.The anomalous region appeared in 1970 and the strain values increased year by year,the events occurred just in the anomalous region. |
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| Keywords: | Apparent strain Seismic moment Earthquake energy Songpan-Pingwu earthquake |
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