2.5-Dimensional tomography of uppermost mantle beneath Sichuan-Yunnan and surrounding regions
文献类型：期刊论文
| 作者 | Lu, Yan1; Zhang, Zhongjie1; Pei, Shunping2; Sandvol, Eric3; Xu, Tao1; Liang, Xiaofeng1 |
| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2014-07-13 |
| 卷号 | 627页码:193-204 |
| 关键词 | Uppermost mantle Tomography Velocity Vp/Vs ratio Subduction Hot material |
| ISSN号 | 0040-1951 |
| DOI | 10.1016/j.tecto.2013.03.008 |
| 文献子类 | Article |
| 英文摘要 | We examine the Pn and Sn travel time data with long and short epicentral distance ranges separately and obtain 2.5-dimensional tomographic models for the uppermost mantle velocity and the Vp/Vs ratio beneath the Sichuan-Yunnan and adjacent regions. The tomographic models show that the average Vp and Vs of the upper layer are approximately 8.10 km/s and 4.60 km/s and those of the deeper layer are 8.19 km/s and 4.65 km/s, respectively; the average velocity ratio is 1.76 under the study area. A comparison of the Pn and Sn velocity distribution reveals that the high- and low-velocity anomalies are consistent. High velocity and low Vp/Vs ratios exist in the Sichuan Basin and low velocity and high ratios distribute in the Myanmar-Yunnan, Songpan-Ganzi, and Hainan regions, respectively. Our models provide more evidence for the subduction of the Indian plate beneath the Myanmar-Yunnan region and the existence of the hot material upwelling beneath the Hainan region. In our velocity model, there is a significant difference between the southern and the northern parts of the Yunnan region (i.e. north and south of 26 degrees N); we infer that these regions are controlled by different dynamic processes. The velocity distributions at different depths are mainly similar in most of the regions of the study area, and the differences between the upper layer and the deeper layer beneath the Yunnan region indicate that the heat flow from the upper mantle has complex characteristics. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS关键词 | TIBETAN PLATEAU ; POISSONS RATIO ; WAVE VELOCITY ; CONTINENTAL COLLISION ; CRUSTAL DEFORMATION ; P-N ; ANISOTROPY ; CHINA ; SUBDUCTION ; PROVINCE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000339535000018 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; 41021063) ; 41021063) ; 41021063) ; 41021063) ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; 41021063) ; 41021063) ; 41021063) ; 41021063) ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; 41021063) ; 41021063) ; 41021063) ; 41021063) ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; National Nature Science Foundation of China(40830315 ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; China Postdoctoral Science Foundation(2012M510043) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; National Probing Project(SinoProbe-03-02) ; 41021063) ; 41021063) ; 41021063) ; 41021063) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/85296]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Lu, Yan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China 3.Univ Missouri, Dept Geol Sci, Columbia, MO 65211 USA |
| 推荐引用方式 GB/T 7714 | Lu, Yan,Zhang, Zhongjie,Pei, Shunping,et al. 2.5-Dimensional tomography of uppermost mantle beneath Sichuan-Yunnan and surrounding regions[J]. TECTONOPHYSICS,2014,627:193-204. |
| APA | Lu, Yan,Zhang, Zhongjie,Pei, Shunping,Sandvol, Eric,Xu, Tao,&Liang, Xiaofeng.(2014).2.5-Dimensional tomography of uppermost mantle beneath Sichuan-Yunnan and surrounding regions.TECTONOPHYSICS,627,193-204. |
| MLA | Lu, Yan,et al."2.5-Dimensional tomography of uppermost mantle beneath Sichuan-Yunnan and surrounding regions".TECTONOPHYSICS 627(2014):193-204. |
入库方式： OAI收割
来源：地质与地球物理研究所
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