煤田地质与勘探2011，Vol.39Issue(2)：57-60,65,5.DOI:10.3969/j.issn.1001-1986.2011.02.013
可控震源粘弹性波动方程有限差分模拟
Finite difference simulation of viscoelastic wave equation in vibroseis
摘要
Abstract
Earth can be treated as full elastic isotropic medium in general calculation of seismic wave. Viscoelastic model is more realistic than elastic model for fine observation of surface soil. Vibroseis is a precise, controllable and safe new source developed in recent years. The study of vibroseis transmission dynamics is less mature than pulse source. This article uses finite difference to simulate propagation of seismic wave excited by vibroseis in viscoelastic medium. Kelvin viscoelastic wave equations with absorbing boundary condition and vibration source model are given. The acceleration of received signals and the propagation distance have the cubic polynomial exponential relationship, which is more accurate than the linear exponential relationship, this formula can predict the effective received distance of certain acquisition system.关键词
有限差分/可控震源/粘弹性/正演模拟Key words
finite difference/ vibroseis/ viscoelastic/ forward modeling分类
天文与地球科学引用本文复制引用
钟飞,张伟,焦标强,钟约先..可控震源粘弹性波动方程有限差分模拟[J].煤田地质与勘探,2011,39(2):57-60,65,5.基金项目
铁道部-清华基金项目(T200409). （T200409）
