Inversion of Seismic Wave-Form Data Using the Renormalized Born Approach

这项研究旨在发展一种新的理论方法来反演地震波形数据，以确定介质性质的空间分布。该方法是基于最近提出的用于电场数据反演的重整化源型积分方程法来确定一维电导率剖面。本研究试图将这一新方法推广到声波资料中，以确定二维和三维的速度和密度结构，其中背景介质假定为垂直(一维)非均质。这种新方法有望优于通常的基于一阶Born近似的线性化迭代方法。

This research is to develop a new theoretical approach to the inversion of seismic wave-form data for determination of spatial distributions of medium properties. The new approach is based on the renormalized source-type integral equation method recently proposed for inversion of electric field data to determine the 1- D conductivity profile. This research will attempt to extend the new approach to the acoustic wave data to determine the 2-D and 3- D velocity and density structure, in which the back-ground medium is assumed to be vertically (1-D) heterogeneous. The new approach is expected to be superior to the usual linearization-iteration procedure based on the first Born approximation.