| ??????????3??7?????????????????? |
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| 引用本文： | 赖晓玲,李松林,孙译.??????????3??7??????????????????[J].大地测量与地球动力学,2007,27(1):31-34. |
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| 作者姓名： | 赖晓玲 李松林 孙译 |
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| 作者单位： | 1. 中国地震局地球物理勘探中心,郑州,450002
2. 华北水利水电学院,郑州,450008 |
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| 基金项目： | 国家自然科学基金(40374032)，国家发展改革委项目“城市活断层试验探测”(2004-138)，中国地震局地球物理勘探中心论著RCEG200619 |
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| 摘 要： | ?????????????????????????????????????????????????????????????????????????????????1969????1976???????????????????3??7?????????????????????????Щ????????: ??????????????????????????????????28 km;?????????????????????????????α??????????????????;?????????????????????????????λ???????;??????????????3??????????????????????????????????????????????????????????????????????????????й??
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| 关 键 词： | ??????? ??????? ???????? ????????????? ??????? |
| 文章编号： | 1671-5942(2007)01-0031-04 |
| 修稿时间： | 2006年7月25日 |
DEEP TECTONIC BACKGROUND OF THREE Ms ＞ 7.0 STRONG EARTHQUAKES IN BOHAI AND ITS ADJACENT REGION |
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| Lai Xiaoling,Li Songlin,Sun Yi.DEEP TECTONIC BACKGROUND OF THREE Ms ＞ 7.0 STRONG EARTHQUAKES IN BOHAI AND ITS ADJACENT REGION[J].Journal of Geodesy and Geodynamics,2007,27(1):31-34. |
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| Authors: | Lai Xiaoling Li Songlin Sun Yi |
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| Institution: | 1)Geophysical Exploration Center, CEA, Zhengzhou 4500022)North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450008 |
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| Abstract: | Through synthetic analysis and interpolation to the results of deep seismic sounding profiles,the crustal thickness graph of Bohai sea and its adjacent region is obtained. Combining with other geophysics results, some opinions about deep structure background of three Ms>7.0 strong earthquake in Bohai sea and its adjacent region during 1969 to 1976 are proposed that the Bohai region is the center of upper mantle upheaval, where the thinnest crustal thickness is only 28 km;furthermore, this region is also the center of high thermal flow, vertical deformation of crust and the Curie surface upheaval and the raised region is a NNE-striking belt and is corresponding to the strike of Tancheng-Lujiang fault belt.The Bohai earthquake, the Haicheng earthquake and the Tangshan earthquake all occured in the edge of the raised region and it maybe related to the stress field caused by the upper mantle upheaval and the thermal stress field caused by the abnormal thermal activities. |
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| Keywords: | Haicheng earthquake Tangshan earthquake Bohai earthquake deep structure background of strong earthquake upheaval of upper mantle |
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