| 新疆及周边地区强震成组活动及其预测研究 |
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| 引用本文： | 高国英,王筱荣,温和平,聂晓红.新疆及周边地区强震成组活动及其预测研究[J].地震,2007,27(4):18-26. |
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| 作者姓名： | 高国英 王筱荣 温和平 聂晓红 |
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| 作者单位： | 新疆维吾尔自治区地震局,新疆,乌鲁木齐,830011 |
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| 摘 要： | 系统分析了1900年以来新疆及周边6级以上地震成组活动基本特征。结果表明,新疆及周边地区6级以上地震成组活动明显,并具有持续时间短、地震强度大、频度高的特点。新疆及周边地区7级以上地震有95%发生在地震成组活动期间,地震成组活动是该区域发生7级以上强震的中期预测指标之一。地震成组活动一般出现在低活动水平背景下,而且成组地震活动在空间上相对集中分布,在地震活动期间强震存在由新疆西南向北东迁移的特点,其中天山地震带尤其是南天山西段为强震主要的活动区域。地震成组活动伴随地震条带图像的出现;在地震成组活动前或活动中新疆地区前兆测项异常明显增加,具有群体异常的起伏变化过程。
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| 关 键 词： | 地震成组活动 地震活动图像 区域特点 前兆测项异常 |
| 文章编号： | 1000-3274（2007）04-0018-09 |
| 收稿时间： | 2007-06-04 |
| 修稿时间： | 2007-07-27 |
Research on grouping activity of strong earthquakes and its prediction in Xinjiang and its adjacent area |
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| GAO Guo-ying,WANG Xiao-rong,WEN He-ping,NIE Xiao-hong.Research on grouping activity of strong earthquakes and its prediction in Xinjiang and its adjacent area[J].Earthquake,2007,27(4):18-26. |
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| Authors: | GAO Guo-ying WANG Xiao-rong WEN He-ping NIE Xiao-hong |
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| Abstract: | In this paper,we have analyzed systematically the characteristics of seismic activity with the magnitude greater than 6 in Xinjiang and its adjacent area.It shows that the activity has clearly grouping characteristics,and the duration time is short,the intensity and frequency is high.The 95% earthquakes with magnitude greater than 7 in Xinjiang and its adjacent area occurred during the grouping seismic activity period,and the grouping seismic activity is also the index of medium-term prediction.The grouping seismic activity with the magnitude greater than 6 occurred commonly with a weak background of seismic activity,and the area where the grouping seismic activity was relatively centralized,the strong earthquake focus moved form southwest to northeast in Xinjiang.The Tianshan seismic belt is the main area of grouping seismic activity,especially the western part of south Tianshan,and is associated with the seismic bands,the clear increase of the precursor anomaly,and the grouping anomaly shows a changeable course. |
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| Keywords: | The grouping seismic activity Seismic pattern Regional characteristics Precursory anomaly |
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