| 穹状隆起与菏泽地震 |
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| 引用本文： | 朱海之.穹状隆起与菏泽地震[J].地震地质,1985,7(1):1. |
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| 作者姓名： | 朱海之 |
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| 作者单位： | 国家地震局地质研究所 |
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| 摘 要： | 1984年11月7日山东菏泽发生5.9级地震,震中区曾在1937年发生过7级地震。从卫星影象中读出,震中区有着环状水系的分布,另从该地古地理的演化、深部、浅部构造、大地热流值、地面形变测量、地震活动、震前水位上升等等资料的综合分析,表明菏泽地震是发生在构造上升、穹状隆起的中心(或近中心),是中心部位破裂的结果。震害除受构造控制外,浅层结构与潜水埋深也有很大影响,这次地震所造成的砂土液化,不同于强震所造成的液化类型
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| 关 键 词： | 荷泽地震 菏泽地震 穹状隆起 涌水 万福河 极震区 震前 兰考 潜水埋深 砂土液化 |
QUAQUAVERSAL STRUCTURE RISE AND HEZE EARTHQUAKE |
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| Abstract: | A M 5.9 earthquake occurred in the Heze area of Shandong in November 1983 as well as a M 7 earthquake of 1937 on the same seismic 20ne.Following interpretations of Landsat images,an arcuate distribution of the drainages can be found.A comprehensive analysis of deep-shallow structures,ground hot flow,observations of geodetic deformation,seismicities and elavated groundwater table preceding the earthquake indicates that the earthquake in point may have,appeared at uprising-doming structure central,responding to the failute of these structures.Seismic hazard may depend on shallow structures and the depth to the water table,as well as the behasiour of structures of this kind.Associated with the earthquake,sand liquation can be distinquished from that resulting from the other shocks |
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