2-D velocity images of upper crust in Tianshui area, Gansu Province
文献类型：期刊论文
| 作者 | Cao Ling-Min1; Lai Xiao-Ling2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2012-10-01 |
| 卷号 | 55期号:10页码:3318-3326 |
| 关键词 | North-south tectonic belt Qinling orogenic belt Seismic exploration Finite-difference tomography |
| ISSN号 | 0001-5733 |
| 通讯作者 | Cao, LM (reprint author), Chinese Acad Sci, Inst Oceanol, Marine Geol & Environm Key Lab, Qingdao 266071, Peoples R China. |
| 英文摘要 | We used the Pg-wave arrival times from high-resolution active-source seismic sounding to carry out the tomographic job on the northeastern margin of Qinghai-Tibet plateau, that is, the Tianshui-Wudu area in West Qinling, with finite difference forward and least squares inversing algorithm with irregular meshes. The results indicate that the study area has rich and complex fractures, such as the fluctuant basement and the steep faults mostly extending to great depths and cutting through the basement. The low-velocity zone between Lixian and Xihe reflects the existence of Xi-Li sedimentary basin, the basement of which is about 5 km deep. The pronounced changing of the velocity contour on the east of Wushan is consistent with the fold region nearby. The Chengxian basin has a relatively high and gently changing velocity, the basement depth of which is less than 3 km. Near Lixian there is a near north- south fault, and a low-velocity zone exists beneath about 5 km depth in the tomographic profile, which may be the upwelling channel of the deep mantle substance in the Tibetan Plateau. |
| 学科主题 | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 原文出处 | 10.6038/j.issn.0001-5733.2012.10.014 |
| 语种 | 英语 |
| WOS记录号 | WOS:000310817000014 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/12488]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Marine Geol & Environm Key Lab, Qingdao 266071, Peoples R China 2.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao Ling-Min,Lai Xiao-Ling. 2-D velocity images of upper crust in Tianshui area, Gansu Province[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(10):3318-3326. |
| APA | Cao Ling-Min,&Lai Xiao-Ling.(2012).2-D velocity images of upper crust in Tianshui area, Gansu Province.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(10),3318-3326. |
| MLA | Cao Ling-Min,et al."2-D velocity images of upper crust in Tianshui area, Gansu Province".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.10(2012):3318-3326. |
入库方式： OAI收割
来源：海洋研究所
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