Geodynamic response of Moho relief modes to the channel flow below the Tibetan Plateau: numerical simulation
文献类型：期刊论文
| 作者 | Pi Jiao-Long1,2; Teng Ji-Wen1; Yang Hui1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 57期号:9页码:2766-2776 |
| 关键词 | Channel flow Tibetan Plateau Moho interface Numerical simulation Geodynamic response |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg20140904 |
| 文献子类 | Article |
| 英文摘要 | The crust-mantle boundary (Moho) is not a 'rigid' interface in physics as evidenced by high-precision artificial source deep seismic sounding in the Tibetan Plateau. This interface is not only extremely uneven with large relief, but also cut by a series of deep faults with different sizes and different geometries. Therefore, it should have complex dynamic responses of material motion on the surface and in the deep subsurface. In the common channel flow model, the interface between the lower crust and upper mantle is assumed as a flat boundary, and simplified into a smooth constrained boundary in numerical simulation. This paper adopts 2-D viscoelastic models to simulate the response of the channel flow model by an undulating Moho interface. These models are based On the average velocities of the crust and upper mantle of the Tibetan plateau extracted observational data. The results shows that the effect of channel flow is limited to a small area. The changes of Moho relief can affect the channel flow. The undulating Moho interface enhances the synchronous motion of the lower crust and lithospheric mantle, but in a limited range. The changes of Moho shape produces different influences on horizontal displacements on the surface and the Moho interface. Where the Moho occurs dislocation, the horizontal displacement on the surface begins to significantly reduce, implying decoupling of displacement between the surface and subsurface. The deep dynamic effects of the model and the response of the surface are not of local characters, instead at least regional processes. |
| WOS关键词 | LOWER CRUSTAL FLOW ; UPPER-MANTLE ; DEFORMATION ; EXHUMATION ; MECHANISMS ; EXTRUSION ; DYNAMICS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000342479900004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84906]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Pi Jiao-Long |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pi Jiao-Long,Teng Ji-Wen,Yang Hui. Geodynamic response of Moho relief modes to the channel flow below the Tibetan Plateau: numerical simulation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(9):2766-2776. |
| APA | Pi Jiao-Long,Teng Ji-Wen,&Yang Hui.(2014).Geodynamic response of Moho relief modes to the channel flow below the Tibetan Plateau: numerical simulation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(9),2766-2776. |
| MLA | Pi Jiao-Long,et al."Geodynamic response of Moho relief modes to the channel flow below the Tibetan Plateau: numerical simulation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.9(2014):2766-2776. |
入库方式： OAI收割
来源：地质与地球物理研究所
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