Numerical simulation of gps observed clockwise rotation around the eastern himalayan syntax in the tibetan plateau
文献类型：期刊论文
| 作者 | Cao JianLing1; Shi YaoLin1; Zhang Huai1; Wang Hui2 |
| 刊名 | Chinese science bulletin
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 54期号:8页码:1398-1410 |
| 关键词 | Tibetan plateau Ductile lower crust Three-dimensional finite element Spherical coordinate Maxwell model Numerical simulation |
| ISSN号 | 1001-6538 |
| DOI | 10.1007/s11434-008-0588-7 |
| 通讯作者 | Cao jianling(caojianl@gmail.com) |
| 英文摘要 | From global position system (gps) measurements, there is a clockwise rotation around the eastern himalayan syntax in the tibetan plateau. this phenomenon is difficult to be interpreted by simple two-dimensional modeling from a geodynamic point of view. because of the extremely thick crust and the lower crust with relatively high temperature in the tibetan plateau, the lithospheric rheology in tibet and surrounding areas present a complex structure. in general, the tectonic structure of the tibetan plateau consists of brittle upper crust, ductile lower crust, high viscosity lithospheric upper mantle, and low viscosity asthenosphere, the same as the case in many other continental regions. however, the lower crust in the tibetan plateau is much more ductile with a lower viscosity than those of its surroundings at the same depth, and the effective viscosity is low along the collision fault zone. in this study, we construct a three-dimensional maxwell visco-elastic model in spherical coordinate system, and simulate the deformation process of the tibetan plateau driven by a continuous push from the indian plate. the results show that the existence of the soft lower crust under the plateau makes the entire plateau uplift as a whole, and the himalayas and the eastern himalayan syntax uplift faster. since the lower crust of surrounding blocks is harder except in the southeastern corner where the high-temperature material is much softer and forms an exit channel for material transfer, after the whole plateau reaches a certain height, the lower crustal and upper mantle material begins to move eastward or southeastward and drag the upper crust to behave same way. thus, from the macroscopic point of view, a relative rigid motion of the plateau with a clockwise rotation around the eastern himalayan syntax is developed. |
| WOS关键词 | SCALE CRUSTAL DEFORMATION ; QINGHAI-XIZANG PLATEAU ; SEISMIC ANISOTROPY ; COLLISION ZONE ; HEAT-FLOW ; CONTINENTAL-CRUST ; CHINA ; BENEATH ; MANTLE ; UPLIFT |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000265019200018 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2395328 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cao JianLing |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Lab Computat Geodynam, Beijing 100049, Peoples R China 2.China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao JianLing,Shi YaoLin,Zhang Huai,et al. Numerical simulation of gps observed clockwise rotation around the eastern himalayan syntax in the tibetan plateau[J]. Chinese science bulletin,2009,54(8):1398-1410. |
| APA | Cao JianLing,Shi YaoLin,Zhang Huai,&Wang Hui.(2009).Numerical simulation of gps observed clockwise rotation around the eastern himalayan syntax in the tibetan plateau.Chinese science bulletin,54(8),1398-1410. |
| MLA | Cao JianLing,et al."Numerical simulation of gps observed clockwise rotation around the eastern himalayan syntax in the tibetan plateau".Chinese science bulletin 54.8(2009):1398-1410. |
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来源：中国科学院大学
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