| Faulting on the Anninghe fault zone, Southwest China in Late Quaternary and its movement model |
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| 作者姓名： | 何宏林 池田安隆 |
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| 作者单位： | Institute of Geology China Earthquake Administration，Department of Earth and Planetary Science University of Tokyo Tokyo 113-0033 Japan，Beijing 100029 China |
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| 基金项目： | Foundation item： Joint Seismological Science Foundation of China （105066）, National Natural Science Foundation of China （40472109）, and the SASAKAWA Scientific Grant from the Japan Science Society. Acknowledgments The authors would like to express our thanks to Mr. S0NG Fang-min for supplying us transport facilities and helpful discussion, Ms. ZHANG Wan-xia and Mr. LI Chuan-you for their warm help in the field investigation, and the anonymous reviewers for their constructive comments. |
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| 摘 要： | The Anninghe fault is one of the significant earthquake-generating fault zones in the Southwest China. Local his-torical record shows that a M≥7 strong earthquake occurred in the year of 1536. On the basis of the detailed air-photographic interpretation and field investigation, we have acquired the following knowledge: 1 The average sinistral strike-slip rate since the Late Pleistocene is about 3~7 mm/a; 2 There is important reverse faulting along the fault zone besides the main left-lateral strike-slip motion, and the shortening rate across the Anninghe fault zone due to the reverse faulting is about 1.7~4.0 mm/a. If the Xianshuihe fault zone is simply partitioned into the Anninghe and Daliangshan faults, we can also get a slip rate of 3~7 mm/a along the Daliangshan fault zone, which is the same as that on the Anninghe fault zone. Moreover, on the basis of our field investigation and the latest knowledge concerning the active tectonics of Tibetan crust, we create a dynamic model for the Anninghe fault zone.
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| 关 键 词： | 中国 西南地区 断层作用 地震 |
| 文章编号： | 1000-9116（2007）05-0571-13 |
| 收稿时间： | 7 December 2006 |
| 修稿时间： | 2006-12-07 |
Faulting on the Anninghe fault zone, Southwest China in Late Quaternary and its movement model |
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| He Hong-lin,and Yasutakyr Ikeda.Faulting on the Anninghe fault zone, Southwest China in Late Quaternary and its movement model[J].Acta Seismologica Sinica(English Edition),2007,20(5):571-583. |
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| Authors: | He Hong-lin and Yasutakyr Ikeda |
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| Institution: | 1. Institute of Geology, China Earthquake Administration, Beijing 100029, China; 2. Department of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan |
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| Abstract: | The Anninghe fault is one of the significant earthquake-generating fault zones in the Southwest China. Local historical record
shows that a M≥7 strong earthquake occurred in the year of 1536. On the basis of the detailed air-photographic interpretation and field
investigation, we have acquired the following knowledge: ➀ The average sinistral strike-slip rate since the Late Pleistocene
is about 3∼7 mm/a; ➁ There is important reverse faulting along the fault zone besides the main left-lateral strike-slip motion,
and the shortening rate across the Anninghe fault zone due to the reverse faulting is about 1.7∼4.0 mm/a. If the Xianshuihe
fault zone is simply partitioned into the Anninghe and Daliangshan faults, we can also get a slip rate of 3∼7 mm/a along the
Daliangshan fault zone, which is the same as that on the Anninghe fault zone. Moreover, on the basis of our field investigation
and the latest knowledge concerning the active tectonics of Tibetan crust, we create a dynamic model for the Anninghe fault
zone.
Foundation item: Joint Seismological Science Foundation of China (105066), National Natural Science Foundation of China (40472109), and the
SASAKAWA Scientific Grant from the Japan Science Society. |
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| Keywords: | active fault reverse fault slip rate Anninghe fault |
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