论文详情

基于随机介质模型的近地表波场模拟及分析

石油物探

2011年 50卷第No. 4期

阅读：62

查看详情

Title

Near-surface wave field simulation and analysis based on random media models

单位

(1.中国石油化工股份有限公司石油物探技术研究院,江苏南京210014;2.中国石油大学(华东)地球资源与信息学院,山东青岛266555)

Organization

Xiao Yunfei,Sinopec Geophysical Research Institute,Nanjing 210014,China

摘要

为了更好地研究野外实际近地表波场特征，特别是瑞雷面波的波场特征,根据弹性波方程,采用交错网格有限差分算法对基于随机介质模型的近地表波场进行了模拟和分析。通过半空间随机介质模型的模拟,分析了瑞雷面波能量在水平和垂直传播方向上的衰减情况以及震源埋深对面波能量的影响;利用层状随机介质模型的模拟,分析了不同随机介质自相关长度对近地表波场的影响。

Abstract

In order to give a better research on the near-surface wave characteristics in the field (focusing on Rayleigh wave),on the basis of random media model establishment,in terms of elastic wave equation,we applied straggered grid finite difference algorithm to simulate and analyze the near-surface wave field of random media model.By simulating semi-space random media model,the energy attenuation of Rayleigh wave in horizontal and vertical directions was analyzed,and the impact of source depth on Rayleigh wave energy was studied.By simulating layered random media model,the impact of different self-coherent length on near-surface wave field was analyzed.

关键词：

近地表; 随机介质模型; 交错网格; 瑞雷面波; 震源埋深;

Keywords:

near surface; random media model; staggered grids; Rayleigh wave; source depth;

基金项目

DOI

10.3969/j.issn.1000-1441.2011.04.004