| 安徽历史地震等震线长轴方位分布及地震地质意义 |
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| 引用本文： | 张杰,沈小七,王行舟,沈业龙.安徽历史地震等震线长轴方位分布及地震地质意义[J].中国地震,2004,20(2):152-160. |
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| 作者姓名： | 张杰 沈小七 王行舟 沈业龙 |
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| 作者单位： | 安徽省地震局,安徽合肥长江西路558号,230031 |
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| 基金项目： | 安徽省地震局重点科研基金 (2 0 0 2 110 )资助 |
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| 摘 要： | 统计了安徽地区历史地震等震线长轴方位分布，主要有北东、北北东、北西和近东西向4组，它们与震中区及其附近的新生代活动断裂的走向有较好的一致性，大致反映了安徽各地的发震构造及破裂方位。其中北东、北西向断裂活动时间最新，多与地震活动相关，而北东向活动断裂是研究地区主要的地震构造。从构造地貌、断裂活动、遥感解译活动线性构造和中强地震活动的相互印证关系来看，大别山北麓、皖东北地区是安徽现代构造和中强地震活动较为强烈的地区，其中，皖东北地区未来发生中强地震的危险性较大。
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| 关 键 词： | 安徽 等震线长轴方位 地震地质 |
| 文章编号： | 1001-4683(2004)02-152-09 |
Distribution of the Historical Earthquake Isoseismal Curve Major Axis Direction and Significance of the Seismogeology in the Anhui Region |
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| Zhang Jie,Shen Xiaoqi,Wang Xingzhou,Shen Yelong.Distribution of the Historical Earthquake Isoseismal Curve Major Axis Direction and Significance of the Seismogeology in the Anhui Region[J].Earthquake Research in China,2004,20(2):152-160. |
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| Authors: | Zhang Jie Shen Xiaoqi Wang Xingzhou Shen Yelong |
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| Abstract: | The predominance distribution of the historical earthquake isoseismal curve major axis direction has been counted in the Anhui region. There are four group trends: NE, NNE, NW and near EW. They are coherence to the trend of active faults near to the epicenter in Cenozoic era. They approximately reflect the shock construct and rupture trend about the Anhui region which activity time of NE, NW is up to the minute. They are correlation to shock activity too. But the NE active fault is the main seismogenic structure of the Anhui region. From the confirm one another of tectonic geomorphy, faults activity, image interpretation linearity construct and moderately strong earthquake activity, north of Dabie and northeast Anhui are strong activity areas of recent tectonic movement and moderate earthquake. The northeast Anhui is the risk area in the future. |
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| Keywords: | Anhui Major axis direction of isoseismal curve Seismogeology Significance |
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