| 中亚地区地震序列特征 |
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| 引用本文： | 刁桂苓,李钦祖.中亚地区地震序列特征[J].内陆地震,1999,13(1):1-6. |
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| 作者姓名： | 刁桂苓 李钦祖 |
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| 作者单位： | 河北省地震局!石家庄050021 |
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| 摘 要： | 共搜集到１９７０－１９８４年中亚地区８个地震序列。通过分析这些板块内部地震序列的震源分布，震源机制，归纳出它们的特征是：震中分布的长轴部比较短，震中分布长轴和短轴的比值小；长轴的方向受当地地震带的走向控制。和碰撞带走向无关。地震序列中各地震的震源深度都比较浅。其中有震源机制资料的３个地震序列表明：主震的震源机制如果是逆冲滑动，倾角则比较低；主要的震源机制如果是走向滑动，倾角则比较高。
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| 关 键 词： | 地震序列 板内地震 板缘地震 中亚地区 特征差异 |
THE FEATURES OF THE EARTHQUAKE SEQUENCES IN CENTRAL ASIA |
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| Diao Guiling,Li Qinzu,Chen Jingwei,Sun Peiqing,Yu Limin.THE FEATURES OF THE EARTHQUAKE SEQUENCES IN CENTRAL ASIA[J].Inland Earthquake,1999,13(1):1-6. |
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| Authors: | Diao Guiling Li Qinzu Chen Jingwei Sun Peiqing Yu Limin |
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| Institution: | Seismological Bureau of Hebei Province Shijiazhuang 050021 |
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| Abstract: | The data of 8 earthquake sequences in Central Asia during the period of 1970~1984 are collected.By analyzing the hypocenter distribution and focal mechanisms of these intraplate earthquake sequences,their features have been drawn:the major axis of the epicenter area is shorter and the ratio of major axis to minor axis is less than those of the interplate earthquake;the direction of the major axis is controlled by the trend of local seismic zone and independent on the trend of collision zone;the hypocenters of all earthquake sequences are shallow;focal mechanism solutions are collected for only three earthquake sequences and they show lower dip for the reverse slip type mainshock,higher dip for the strik slip type mainshock;the consistency is bad between the focal mechanisms of mainshocks and aftershocks whether the focal mechanisms of mainshocks are reverse slip type or strike slip type. |
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| Keywords: | \ Earthquake sequence\ Intraplate earthquake\ Plate boundary earthquake\ Central Asia\ Characteristic difference |
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