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秦岭北缘大断裂断层气与地震危险性

THE FAULT GASES OF LARGE FAULTS ON THE NORTHERN FRINGE OF QINLING MOUNTAIN AND ITS EARTHQUAKE RISK

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【作者】 石雅镠张必敖王先彬

【Author】 Shi Yaliu, Zhang Bi’ao (Earthquake Research Institute of Lanzhou, SSB, Gansu, China) Wang Xianbin (Lanzhou Institute of Geology, Academia Sinica)

【机构】 国家地震局兰州地震研究所中国科学院兰州地质研究所

【摘要】 本文用对应分析方法对秦岭北缘大断裂各段的断层气(水溶气)进行了分析,由此确定的该断裂地震危险段顺序为,贵德—循化段大于临潼—咸阳段,清水区在两者之间,天水—和政段大于眉县—兰田段。并进一步得出,贵德—循化段和清水区为强震危险区,而眉县—兰田段不会发生7级以上大震。

【Abstract】 This paper analyses the fault gases of each segment of large faults in the northern fringe of Qinling Mountain, determines the segment order of strong earthquake risk: the earthquake risk is stronger in the Guide-Xunhua segment than that in the Lintong-Xianyang segment; the earthquake risk in the Qingshui segment is between above-mentioned two segments; and the earthquake risk is stronger in the Tianshui-Hezheng segment than that in the Meixian-Lantian segment. The authors further determine that the Guide-Xunhua segment and Qingshui area are strong earthquake risk areas, and in the Meixian-Lantian segment there will not occur any earthquake (M≥7).

【基金】 国家自然科学基金
  • 【文献出处】 西北地震学报 ,Northwestern Seismological Journal , 编辑部邮箱 ,1990年02期
  • 【被引频次】6
  • 【下载频次】97
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