| 用大地测量资料反演青藏高原构造应力场的初步尝试 |
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| 引用本文： | 许才军,晁定波.用大地测量资料反演青藏高原构造应力场的初步尝试[J].测绘学报,1997,26(2):95-100. |
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| 作者姓名： | 许才军 晁定波 |
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| 作者单位： | 武汉测绘科技大学 |
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| 摘 要： | 本文讨论了大地测量反演构造应力场的理论与方法。结合青藏高原地质、地球物理资料、利用限单元法，初步建立了青藏高原构造力场三维弹性数值分析模型。用地表水准和ＧＰＳ资料提供的位移值作为地表边界约束条件，反演计算了青藏高原变场和应力场，数值结果表明，青藏高原构造应力场以南北向挤压为主，东西向拉张为辅，欧亚板块与印度板块相撞作用仍控制着高原现今构造应力场。
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| 关 键 词： | 青藏高原 构造应力场 大地测量 测量数据反演 |
A PRELIMINARY ATTEMPT FOR INVERSION OF TECTONIC STRESS FIELD IN TIBETAN PLATEAU WITH GEODETIC DATA |
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| Xu Caijun,Chao Dingbo,Liu Jingnan,Tao Benzao,Zhang Dehan.A PRELIMINARY ATTEMPT FOR INVERSION OF TECTONIC STRESS FIELD IN TIBETAN PLATEAU WITH GEODETIC DATA[J].Acta Geodaetica et Cartographica Sinica,1997,26(2):95-100. |
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| Authors: | Xu Caijun Chao Dingbo Liu Jingnan Tao Benzao Zhang Dehan |
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| Abstract: | The method of inversing the tectonic stress field with geodetic data is discussed in the paper. Based on the geological and geophysical data, a three dimension elastic finite element model is set up to simulate the tectonic stress field in Tibetan plateau. The displacements provided by GPS and levelling data act as boundary constraints on the earth surface in the model. The simulant results show that the main part of tectonic deformations in the plateau are the compression in N S direction, the tension in E W direction and vertical upheaval, and the present tectonic stress field is predominated by the collision between the Indian plate and the Eurasian plate. |
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| Keywords: | The Tibetan Plateau Tectonic stress field Inversion Finite element method Geodesy |
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