| 我国最近4次7级以上地震前1年的平静特征 |
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| 引用本文： | 孙士宏,金英花.我国最近4次7级以上地震前1年的平静特征[J].地震,1996,16(1):17-21. |
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| 作者姓名： | 孙士宏 金英花 |
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| 作者单位： | 国家地震局分析预报中心，国家地震局分析预报中心 中国北京 100036，中国北京 100036 |
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| 摘 要： | 我国最近4次7级以上地震前的地震活动图象表明,7级地震前1年,地震所在地区出现在中强地震活动水平较高背景下的大范围5级以上地震的平静特征。它可能是岩石在应力作用下的变形特性改变的表现。这一特征对我国大陆7级地震的中期预报与7级地震的发生地区的判定具有很现实意义。
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| 关 键 词： | 大震 中期预报 地震活动异常 地震平静 弹塑性介质 |
QUIET FEATURE OF SEISMICITY ONE YEAR BEFORE FOUR EARTHQUAKES WITH M> 7 IN CHINA |
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| Sun Shihong Jin Yinghua.QUIET FEATURE OF SEISMICITY ONE YEAR BEFORE FOUR EARTHQUAKES WITH M> 7 IN CHINA[J].Earthquake,1996,16(1):17-21. |
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| Authors: | Sun Shihong Jin Yinghua |
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| Abstract: | It is demonstrated by the seismic activity pattern before the last four earthquakes with M> 1 in China that one year before an event with M> 7 the quiet feature of the earthquakes with M > 5 within a large range was detected while the activity of the moderately strong earthquakes in the epicentral area had been relatively high . This is probably the display of the change of deformation behavior of rocks affected by stress. This feature is practically important for the medium-term prediction of the earthquakes with M>7 and the determination of the epicentral region in China continent. |
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| Keywords: | Macroquake Medium-term prediction Seismicity anomaly Seismic quiet Elastic-plastic medium |
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