InSAR干涉形变场远程模拟系统实现与地震地表形变场模拟算例分析

Development of a Remote-modeling System of InSAR Deformation and a Case Study of Coseismic Deformation

利用InSAR(Interferometric SAR)干涉测量技术可以获得地表形变场(视线向,LOS),将其与弹性半空间中一定断层模型模拟计算出的地表形变场进行正演分析,以便获取发震断层的几何学和运动学参数,是一种典型的前向模拟模式。该计算模式由于模拟计算程序调试、安装过程的复杂性,使得在每台微机上安装此类程序不仅费时费力,且浪费大量的计算资源。文中首先介绍了实现InSAR干涉形变场模拟模型由单机推广到Internet/Intranet上进行远程计算最终建立"InSAR干涉形变场远程模拟系统"的过程,并基于此系统平台对1997年玛尼MS7.9地震的InSAR地表形变场进行了模拟试算、分析等。

Using interferometric SAR technology the surface deformation field along LOS can be achieved. In order to get some geometric or kinematic parameters about the earthquake-triggering fault, a comparison between the surface deformation field along LOS acquired by D-InSAR technology and the calculated surface deformation based on Okada model can be done. This kind of method has been proved successful. But it was done on PC, and because of the complexity of all the processes that this method needed, including program＇s testing and installation, it＇s nearly impossible to implement this method and the corresponding programs on needed computers. And itls an overwhelming job and it＇s not an economic way to do the job. With the financial support from MOP and its internet environment improving project, we develop a system called remote-modelling system for In- SAR co-seismic deformation. In this article, we introduce the whole process of the transferring from PC program and method to remote calculation. In order to testify the system ＇s stability and compatibility, we also do a case study about an earthquake surface deformation.