Progress of Joint Inversion on Geodesy and Geophysics
Progress of Joint Inversion on Geodesy and Geophysics
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发表时间：
2001
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通讯作者：
Xu Caijun
中科院分区：
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作者：
Xu Caijun
本文综述了近十年来大地测量和地球物理反演的成就和新进展。基于力学模式的大地测量关节反演模型有很多。对模型辨识进行了初步探讨。在IAG2001中提出了一种基于全球变形数据的反演分析模型。发展了各种局部优化方法和全局优化方法（如遗传算法和IA算法）。数值流形法也被引入到大地测量联合反演中。连续变形的有限元方法和块体系统的不连续变形分析都是这种数值流形方法的特例。我们可以利用重力数据综合反演海底地形，利用应变率数据反演得到分布变形带内的完整水平运动，利用GPS和地震活动数据推断出近期地壳变形和应变积累。我们还可以利用重力观测和GPS基线变化联合反演来探测活动断层段，利用大地测量、地质和地震等多种观测来研究地壳运动。
The achievement and new progress in geodesy and geophysical inversion in the recent decade are summerized in this paper.There are many models of geodesy joint inversion based on mechanical pattern.The model identification is preliminarily discussed.Developing an inverse analysis model based on the Global deformation data is presented in IAG2001.Various local optimization methods and global optimization methods (like genetic algorithm and IA algorithm) are developed. The numerical manifold method (NMM) is also introduced into geodesy joint inversion.Both the finite element method (FEM) for continual and the discontinuous deformation analysis (DDA) for block systems are special cases of this numerical manifold method. We can estimate bottom ocean topography with gravity data using the integrated inverse method,obtain the complete horizontal motions within zones of distributed deformation from the inversion of strain rate data and study recent crustal deformation and strain accumulations inferred from GPS and seismicity data.We can also detect active fault segment with joint inversion of observed gravity and GPS baseline changes and study the crustal movements with various observations including geodetic,geological and seismic.