节点文献
联合GPS和InSAR观测结果计算汶川地震三维地表形变
CALCULATION OF THREE-DIMENSIONAL TERRAIN DEFORMATION OF WENCHUAN EARTHQUAKE WITH GPS AND InSAR DATA
【摘要】 为了解决合成孔径雷达干涉测量(InSAR)不能真实反映三维地表形变量,给分析地震的水平位移场和垂直位移场带来困难的问题,提出一种联合利用GPS和InSAR观测结果计算地表三维位移的方法,并以汶川地震为例进行计算。计算结果表明,汶川地震具有明显的右旋和逆冲特征。
【Abstract】 InSAR(Synthetic Aperture Radar Interferometry)can only obtain the displacements along direction of LOS(line-of-sight),it is not the real three-dimensional surface deformation.Therefore it is difficult to analyze both vertical and horizontal terrain displacements.A method combining GPS and InSAR data to calculate three-dimensional terrain displacements of Wenchuan earthquake is proposed.The results show that the earthquake pupture is obviously right-leteral and thrust.
【关键词】 GPS;
InSAR;
视线向位移;
汶川地震;
曲面拟合;
【Key words】 GPS; InSAR; LOS displacement; Wenchuan earthquake; surface fitting;
【Key words】 GPS; InSAR; LOS displacement; Wenchuan earthquake; surface fitting;
【基金】 公益性行业科研专项(200708030);香港RGC基金(PolyUA/C:B-Q02B)
- 【文献出处】 大地测量与地球动力学 ,Journal of Geodesy and Geodynamics , 编辑部邮箱 ,2010年04期
- 【分类号】P315.73;P228.4
- 【被引频次】14
- 【下载频次】406