| 吉林省松原地区1119年6 3／4级地震的发震构造条件 |
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| 引用本文： | 李传友,张良怀.吉林省松原地区1119年6 3／4级地震的发震构造条件[J].中国地震,1999,15(3):237-246. |
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| 作者姓名： | 李传友 张良怀 |
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| 作者单位： | [1]中国地震局地质研究所 [2]吉林省地震局 |
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| 摘 要： | １９９９年６ ３／４级地震是东北地区震级在的地震，目前对其发震构造背景缺乏深入的研究。本文从深部构造背景，浅层构造条件和深浅部构造关系等方面，对１１１９年地震的发震构造背景作了剖析。研究认为，本次地震的宏观震中位于扶余－前郭一带，地质构造上，该区处于松辽盆地中央凹陷和东南隆起的交接部位；深部构造背景上，该区是莫霍面起伏的拐点，存在北东向基底断鲜明和弱西向深部断裂，前者规模较大，晚新生代有弱活动，是
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| 关 键 词： | 松原地区 历史地震 发震构造条件 地震地质 |
Causative Tectonic Conditions of the Historic Earthquake (M=63/4) in 1119 in Songyuan Area |
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| Li Chuanyou\ Wang Yipeng.Causative Tectonic Conditions of the Historic Earthquake (M=63/4) in 1119 in Songyuan Area[J].Earthquake Research in China,1999,15(3):237-246. |
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| Authors: | Li Chuanyou\ Wang Yipeng |
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| Abstract: | Proceeded from the deep tectonic setting and superstructure,this artical analysed the seismic structure conditions of the earthquake in 1119. It was indicated that the connection between different neotectonic units likely accumulated energy,became the favorable earthquake\|pregnant enviroment. Observing the deep structures and geophysical field circumstances of this region, it could be found that it was in the upper mantle upwelling area,also the abnormality gradient zone and the inflection\|point of Mohorovich discontinuity,the NW\|trend deep fracture and NE\|trend basal fracture intersected in this area.Seismic situation in Northeast China has been further discussed. It has suggested that we should pay more attention to the injection of different neotectonic units in the research of moderately strong earthquakes in East China. |
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| Keywords: | Songyuan area\ Historic earthquake\ Causative tectonic conditions |
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