| 鄂尔多斯活动地块周缘几次Ms6级地震前Ms4级地震活动的异常特征 |
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| 引用本文： | 薛丁.鄂尔多斯活动地块周缘几次Ms6级地震前Ms4级地震活动的异常特征[J].高原地震,2013,25(1):10-14. |
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| 作者姓名： | 薛丁 |
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| 作者单位： | 内蒙古自治区地震局,内蒙古呼和浩特,010051 |
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| 摘 要： | 简要地分析了鄂尔多斯活动地块周缘断陷盆地构造和历史地震分布特征，界定了鄂尔多斯活动地块周缘范围，以此范围选取了Ms4级地震资料。对比研宄了鄂尔多斯活动地块周缘几次Ms6级震例前Ms4级地震活动的时间分布和空间分布特点，研究结果显示：Ms4级地震活动在6级地震前时间上出现活跃-平静-打破平静的异常特征，空间上6级地震发生在4级地震活跃地区或4级地震的平静地区。在此基础上，给出了几次Ms6级震例前肘s4级地震显著活跃的震兆意义和需讨论的问题。
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| 关 键 词： | 鄂尔多斯活动地块 周缘范围界定 Ms6级地震 Ms4级地震 震兆意义 |
THE CHARACTERISTICS OF Ms ≥ 4 EARTHQUAKES ACTIVITY ALONG THE MARGIN OF ORDOS ACTIVE BLOCK BEFORE SEVERAL Ms ≥ 6 HISTORICAL EARTHQUAKES |
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| XUE Ding.THE CHARACTERISTICS OF Ms ≥ 4 EARTHQUAKES ACTIVITY ALONG THE MARGIN OF ORDOS ACTIVE BLOCK BEFORE SEVERAL Ms ≥ 6 HISTORICAL EARTHQUAKES[J].Plateau Earthquake Research,2013,25(1):10-14. |
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| Authors: | XUE Ding |
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| Institution: | XUE Ding(Earthquake Administration of Inner Mongolia Autonomous Region,Hohhot 010010,China) |
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| Abstract: | In this paper, the author briefly analyzed the characteristics of the fault basin structure and the distribution of historical earthquakes along the Ordos active block, and defined the scope of the margin of the Ordos active block. The seismic data of Ms≥4 are selected within the scope, and temporal-spatial distribution of M≥4 earthquakes before several Ms ≥6 historical earthquake cases was comparatively studied. The results show that temporally, before Ms6 occurrence, Ms≥4 earthquakes obviously presented anomalous characteristics of activity-quiet--quiet-break , and from the space pattern Ms6 occurred in the active or quiet area of Ms4 earthquakes. On this basis, the pre-seismic significance of Ms ≥4 earthquakes and some questions were presented. |
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| Keywords: | Ordos active block Bounded dosed region I-Iistorieal earthquakes of Ms ≥ 6 Ms ≥ 4 earthquakes Precursor meaning of earthquake |
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