P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions
文献类型：期刊论文
| 作者 | Li Qiang1; Zhao Xu2; Cai JinAn3; Liu RuiFeng2; Long GuiHua4; An YanRu2 |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 52期号:4页码:567-578 |
| 关键词 | Three Gorges reservoir upper and middle crust three-dimensional velocity structure |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-009-0047-6 |
| 文献子类 | Article |
| 英文摘要 | The three-dimensional P wave velocity structures of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions were reconstructed by means of the seismic tomography, using the absolute P-arrivals from the events observed by the Three Gorges seismic network. Our preliminary study of the deep structure shows: (1) the lithology of the Huangling anticline, integral and highly solidified, exhibits a uniformity. Down to a depth of 20 km, the Huangling anticline still shows high-velocity anomalies. Note that the characteristics of the velocity images with the different depths are not the same; (2) the depth of the sedimentary rocks beneath the entire Zigui basin is not constant, which is less than 6 km; (3) the top boundary of the crystalline basement varies from 0 to 7 km, whereas the bottom one between 14 and 16 km; (4) the partially molten substances of the upper mantle are located in the Badong-Zigui and its adjacent regions as well as nearby Peishi area. The development and evolution of the current tectonics are associated with the cooling and solidifying process of the molten substances within the upper mantle; (5) the different velocity structures of the deep crust in both east and west side of the Jiuwanxi fault are to be investigated in order to understand the origin of gravitational gradient zone in the Three Gorge areas; and (6) the velocities within the upper crust would be affected by reservoir water permeability. |
| WOS关键词 | EARTHQUAKE LOCATION ALGORITHM |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000265046100015 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71806]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao Xu |
| 作者单位 | 1.China Earthquake Adm, Natl Earthquake Infrastruct Serv, Beijing 100037, Peoples R China 2.China Earthquake Adm, China Earthquake Network Ctr, Beijing 100045, Peoples R China 3.China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Qiang,Zhao Xu,Cai JinAn,et al. P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(4):567-578. |
| APA | Li Qiang,Zhao Xu,Cai JinAn,Liu RuiFeng,Long GuiHua,&An YanRu.(2009).P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(4),567-578. |
| MLA | Li Qiang,et al."P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.4(2009):567-578. |
入库方式： OAI收割
来源：地质与地球物理研究所
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