| Study on the Relationship Between Recent Crustal Deformation and the Temporal-Spatial Distribution of Strong Earthquakes ( Ms ≥6.0) in the Sichuan-Yunnan Region |
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| 引用本文： | Li Tieming,Deng Zhihui,Lü Yipei.Study on the Relationship Between Recent Crustal Deformation and the Temporal-Spatial Distribution of Strong Earthquakes ( Ms ≥6.0) in the Sichuan-Yunnan Region[J].中国地震研究,2003,17(4):324-341. |
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| 作者姓名： | Li Tieming Deng Zhihui Lü Yipei |
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| 作者单位： | Li Tieming 1)，Deng Zhihui 1) and Lü Yipei 2) 1) Institute of Geology，China Seismological Bureau，Beijing 100029，China; 2) Seismological Bureau of Sichuan Province，Chengdu 610041，China |
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| 基金项目： | TheresearchwassupportedundernationalkeybasicresearchprojectMechanismsforContinentalEarthquakesandTheirPrediction (95 130 5 0 3)andmajorbasicresearchprojectResearchonRecentCrustalMovementontheChineseContinent (2 0 0 1CCB0 110 0 ) |
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| 摘 要： | Analysis of deformation data measured across the faults, regional vertical deformation data and GPS measurements in the Sichuan-Yunnan region made since the 1980s permitted us to conclude that the crustal deformation in the region during this period of time was relatively weak and caused the occurrence of earthquakes (Ms≥6.0), which were not distributed along the major boundary active faults in the region after the 1981 I)awu Ms 6.9 earthquake and that the seismic activity is characterized by quasi-clockwise migration. Thus, it follows that earthquake prediction research should be focused on the central part of the Sichuan-Yunnan region in the coming years. Finally, a concept of temporal division of the region into active blocks is suggested and the preliminary result of the division is given in the paper.
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| 关 键 词： | 地壳变形 GPS 地震区域划分 阻塞 |
Study on the Relationship Between Recent Crustal Deformation and the Temporal-Spatial Distribution of Strong Earthquakes ( Ms ≥6.0) in the Sichuan-Yunnan Region |
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| Li Tieming,Deng Zhihui.Study on the Relationship Between Recent Crustal Deformation and the Temporal-Spatial Distribution of Strong Earthquakes ( Ms ≥6.0) in the Sichuan-Yunnan Region[J].Earthquake Research in China,2003,17(4):324-341. |
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| Authors: | Li Tieming Deng Zhihui |
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| Institution: | Institute of Geology, China Seismological Bureau, Beijing 100029, China;Institute of Geology, China Seismological Bureau, Beijing 100029, China;Seismological Bureau of Sichuan Province,Chengdu 610041,China |
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| Abstract: | Analysis of deformation data measured across the faults, regional vertical deformation data and GPS measurements in the Sichuan-Yunnan region made since the 1980s permitted us to conclude that the crustal deformation in the region during this period of time was relatively weak and caused the occurrence of earthquakes (Ms≥6.0), which were not distributed along the major boundary active faults in the region after the 1981 Dawu Ms 6.9 earthquake and that the seismic activity is characterized by quasi-clockwise migration. Thus, it follows that earthquake prediction research should be focused on the central part of the Sichuan-Yunnan region in the coming years. Finally, a concept of temporal division of the region into active blocks is suggested and the preliminary result of the division is given in the paper. |
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| Keywords: | Crustal deformation GPS measurement Earthquake Block Division Sichuan-Yunnan region |
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