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| GPS资料对青藏高原现今下地壳粘性特征的约束 | |
| 引用本文： | 陆诗阔,丁林,刘金朝.GPS资料对青藏高原现今下地壳粘性特征的约束[J].地学前缘,2011,18(3):22-32. |
| 作者姓名： | 陆诗阔 丁林 刘金朝 |
| 作者单位： | 1. 中国石油大学(华东)地球科学与技术学院地质系,山东青岛,266555;中国科学院青藏高原研究所,北京,100085 2. 中国科学院青藏高原研究所,北京,100085 3. 中国铁道科学研究院,北京,100081 |
| 基金项目： | 国家自然科学基金项目(40504015); 中国科学院知识创新工程重要方向项目(KZCX3-SW-143); 中国博士后科学基金项目(200503743) |
| 摘 要： | 假定GPS速度场在很大程度上受震间期地壳浅部发震层弹性应变积累的影响,文中以青藏地区现有GPS观测资料为约束,在较高精度地形数据和全球板块相对运动的NUVEL-1A模型基础上,借助数值模拟方法通过构建粘弹性动力学模型,分析了用下地壳介质流动和大陆深部断裂带内的延性应变集中等两种不同的大陆岩石圈深部变形机制对青藏地区现今... |
| 关 键 词： | 青藏高原 GPS资料 下地壳介质流动 深部断裂带延性应变集中 数值模型 |
Viscous characteristics of the present Tibetan lower crust:From the constraint of the GPS velocity field |
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| Lu Shikuo,Ding Lin,Liu Jinzhao.Viscous characteristics of the present Tibetan lower crust:From the constraint of the GPS velocity field[J].Earth Science Frontiers,2011,18(3):22-32. | |
| Authors: | Lu Shikuo Ding Lin Liu Jinzhao |
| Institution: | Lu Shikuo1,2,Ding Lin2,Liu Jinzhao31.School of Geosciences,China University of Petroleum(East China),Qingdao 266555,China2.Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100085,China3.China Academy of Railway Sciences,Beijing 100081,China |
| Abstract: | Assuming that the GPS velocity field is greatly affected by the interseismic elastic deformation of the upper crust,under the constraints of the existing GPS data,and referring to the elevation data and the NUVEL-1A model of global plate movement,we have constructed the viscoelastic mechanical models to analyze the rationality of the explanation to the Tibetan present-day crustal movement by two different deformation mechanisms in the deep continental lithosphere,including the viscous flow in the lower crus... |
| Keywords: | Tibetan plateau GPS data viscous flow in the lower crust ductile strain localization in deep fault zones numerical models |
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