| The Recent Crustal Deformation on the Sichuan-Yunnan Rhombic Block Boundaries |
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| 作者姓名： | Lü Yipei Liao Hu Su Qin Wang Lan |
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| 作者单位： | 1)Seismological Bureau of Sichuan Province, Chengdu 610041, China;2)Geodetic Brigade of Seismological Bureau of Sichuan Province, Ya’an 625000, China;2)Geodetic Brigade of Seismological Bureau of Sichuan Province, Ya’an 625000, China;2)Geodetic Brigade of Seismological Bureau of Sichuan Province, Ya’an 625000, China |
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| 摘 要： | Based on data from an across-fault survey along the sichuan-Yunnan rhombic block boundaries,the recent deformation characteristics on each fault have been analyzed.It was found that the rate of crustal deformation is slowing down along the northern segment and increasing along the southern segment.Each fault has different features of deformation.The horizontal deformation is mainly characterized by left-lateral strike-slip.The rate of vertical deformation is less than that of the horizontal dformation.The faults have the feature of upper wall uplifting alternated with descending.The anomaly changes of crustal deformation at some sites are closely related to the seismicities near the sites.
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| 关 键 词： | 四川-云南 菱形板块 地壳变形 断层 地质调查 地震活动性 |
The Recent Crustal Deformation on the Sichuan-Yunnan Rhombic Block Boundaries |
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| Abstract: | Based on data from an across-fault survey along the Sichuan-Yunnan rhombic block boundaries, the recent deformation characteristics on each fault have been analyzed. It was found that the rate of crustal deformation is slowing down along the northern segment and increasing along the southern segment. Each fault has different features of deformation. The horizontal deformation is mainly characterized by left-lateral strike-slip. The rate of vertical deformation is less than that of the horizontal deformation. The faults have the feature of upper wall uplifting alternated with descending. The anomaly changes of crustal deformation at some sites are closely related to the seismicities near the sites. |
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| Keywords: | The Sichuan-Yunnan rhombic block Crustal deformation Earthquake Across-fault survey |
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