石油物探2017，Vol.56Issue(6)：782-791,10.DOI:10.3969/j.issn.1000-1441.2017.06.002
起伏地形条件下瑞雷面波传播特性研究
Rayleigh wave propagation with undulating topography
摘要
Abstract
This study adopts the body-fitted grid finite-difference method to investigate Rayleigh wave propagation with undulating topography.Factors including concavity-convexity,height,and span of topography influence wave shape,energy,and frequency spectrum.It was found that when undulating topography changes smoothly,a Rayleigh wave can traverse the topography with no obvious distortion;conversely,strenuously undulating topography can result in clearly discernible frequency dispersion.It was found that undulating topography has a filtering effect on the frequency spectrum,which can cause a notch on the spectrum of the Rayleigh wave's reflection/transmission,such that the notch frequency depends on the height/width of the topographic undulation.The curvilinear grid finite-difference method could be effectively applied to seismic modeling with undulating topography.关键词
曲线网格/有限差分方法/起伏地形/面波模拟Key words
curvilinear grid/finite difference/undulating topography/surface wave modeling分类
天文与地球科学引用本文复制引用
李宏,杨心超,朱海波,张伟,曲寿利..起伏地形条件下瑞雷面波传播特性研究[J].石油物探,2017,56(6):782-791,10.基金项目
国家科技重大专项“大型油气田及煤层气开发及勘探评价-涪陵页岩气开发示范工程”(2016ZX05060-005)资助.This research is financially supported by the National Science and Technology Major Project (Grant No.2016ZX05060-005). （2016ZX05060-005）
