物探化探计算技术2012，Vol.34Issue(3)：258-266,9.DOI:10.3969/j.issn.1001-1749.2012.03.04
粘弹性介质地震波传播特征及反射特征研究
CHARACTERISTICS OF SEISMIC WAVE PROPAGATION AND REFLECTION IN VISCOELAS-TIC MEDIUM
摘要
Abstract
Many complex practical problems can t be solved if we assume the medium is ideal elastic medium. In the practice medium, absorption exists during the propagation of seismic waves, which makes the seismic wave energy lost,narrow band,phase delay,the frequency reduce, especially the high-frequency part. This behavior can be expressed by the propagation vector and the attenuation vector, and with the increasing of the attenuation vector, the absorption of the medium is stronger. In this paper, by introducing the generalized plane wave, vertical and horizontal wave quality factor and decay angle, using the relationship of stress-strain and continuity condition, derive the precise Zoeppritz equation in viscous medium. And by solving the exact equation of Zoeppritz, analyze the relationship between the propagation vector, the attenuation vector, reflection coefficients,transmission coefficients and frequency, attenuation angle, angle of incidence, velocity, detailed understand the characteristics of seismic wave propagation in the viscous medium, which provides a theoretical basis for the prediction of reservoir study in viscous medium.关键词
粘弹性介质/传播矢量/衰减矢量/反射系数/衰减角Key words
viscoelastic medium/ propagation vector/ attenuation vector/ reflection coefficient/ decay angle分类
天文与地球科学引用本文复制引用
王小杰,印兴耀,吴国忱..粘弹性介质地震波传播特征及反射特征研究[J].物探化探计算技术,2012,34(3):258-266,9.基金项目
国家重点基础研究计划(973)项目(2007CB209605) （973）
