| 吐鲁番地区地震活动与应力场特征分析 |
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| 引用本文： | 高国英,聂晓红.吐鲁番地区地震活动与应力场特征分析[J].地震地磁观测与研究,2000,21(6):39-43. |
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| 作者姓名： | 高国英 聂晓红 |
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| 作者单位： | 中国乌鲁木齐830011新疆维吾尔自治区地震局 |
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| 摘 要： | 对吐鲁番地区 1 90 0年以来地震活动的时空分布图像以及收集到的部分震源机制资料和1 999年 1月 30日托克逊 5.6级地震进行了分析。结果表明 :该区地震活动存在较明显的平静与活跃交替活动现象 ,两个活跃时段内地震活动的空间图像具有集中分布特征。中强震震源机制主压应力方位显示出北东向分布 ,说明区内地震活动的空间分布图像与区域应力场的作用密切相关。
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| 关 键 词： | 地震活动 时空分布 区域应力场 |
Analyse on seismic activity and stress field feature in Tulufan area |
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| Gao Guoying and Nie Xiaohong.Analyse on seismic activity and stress field feature in Tulufan area[J].Seismological and Geomagnetic Observation and Research,2000,21(6):39-43. |
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| Authors: | Gao Guoying and Nie Xiaohong |
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| Abstract: | The space time distribution patterns of seismic activity and some focal mechanism data since 1990 in Tulufan area are studied,as well as the Toksun earthquake( M 5 6)on January 30,1999.The result shows that the quite and active seismicity period appeared alternately in this area.In the two active periods,the space patterns of seismic activity have the feature of convergent distribution.The principle compressive stress of moderate earthquakes is oriented in eastnorth direction,which shows that the space distribution pattern of seismic activity has close relation to the regional stress field. |
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| Keywords: | seismic activity space time distribution regional stress field |
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