摘要：Spherical Wave Reflection Coefficient (SWRC), a more precise description of seismic wave propagating in subsurface, is the superposition of plane wave reflection coefficient (PWRC). In this paper, frequency-dependent SWRC is investigated in two semi-infinite acoustic media with a planar interface. The frequency-dependent phenomenon occurs in the case of low-frequency and near-field. In general, the lower the frequency (or the near the propagation distance), the larger the difference between SWRC and PWRC. The amplitude and phase of SWRC reposefully approach to that of PWRC at pre-critical angles and oscillate around the value of PWRC at post-critical angles. Moreover, we project the SWRC on complex plane and find an elliptical distribution at precritical angles. Curves fitting using different frequency band illustrates that high-frequency information is redundant and low frequency information is indispensable from the perspective of geometry, especially for the estimation of density parameter.

ISSN号：9789462822177

发表日期：2017-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：79th EAGE Conference and Exhibition 2017

通讯作者：纪永祯,陶永慧

第一作者：闫彬鹏,王尚旭,袁三一

论文类型：会议论文

论文概要：闫彬鹏,王尚旭,袁三一,纪永祯,陶永慧，Frequency-dependent reflection coefficient of spherical wave in acoustic medium，79th EAGE Conference and Exhibition 2017，2017，

论文题目：Frequency-dependent reflection coefficient of spherical wave in acoustic medium