| 昆仑山口西8.1级地震前地震活动图像演化特征 |
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| 引用本文： | 陈玉华,马文静.昆仑山口西8.1级地震前地震活动图像演化特征[J].高原地震,2002,14(1):41-47. |
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| 作者姓名： | 陈玉华 马文静 |
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| 作者单位： | 青海省地震局,青海,西宁,810001 |
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| 摘 要： | 8．1级地震发生前地震活动性图像显示出多种异常形态，地震背景空区、地震条带、小震活动平静等地震活动性异常配套出现。余震集中区远离主震震中，并在地表形成350km的破裂形变带。8．1级地震后东昆仑断裂带中段出现中等地震平静，应力场呈闭锁状态，有较强地震的孕育迹象。
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| 关 键 词： | 地震活动 前兆异常 演化 昆仑山口西地震 |
| 文章编号： | 1005-586X(2002)01-0041-07 |
CHARACTERISTICS OF SEISMICITY PATTERN EVOLUTION BEFORE THE WEST KUNLUN MOUNTAINS EARTHQUAKE WITH Ms8.1 |
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| CHEN Yu-hua,MA Wen-jing.CHARACTERISTICS OF SEISMICITY PATTERN EVOLUTION BEFORE THE WEST KUNLUN MOUNTAINS EARTHQUAKE WITH Ms8.1[J].Plateau Earthquake Research,2002,14(1):41-47. |
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| Authors: | CHEN Yu-hua MA Wen-jing |
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| Abstract: | Seismicity patterns are many abnormal shapes before the earthquake with M s 8 1 ,such as background gaps,belts and quiet of small earthquakes.Epicenters of aftershocks are far away from the main shock,and formed a rupture belt with 350km. Middle earthquakes are quiet in the middle segment of the eastern Kunlun fault,the stress field is blocking,and is a strong earthquake seismogenic zone. |
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| Keywords: | Seismicity Precursory anomaly Evolution The Kunlun Mountains earthquake |
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