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Influence of mesoscopic heterogeneity on reflection coefficient
Author(s): 
Pages: 36-39
Year: Issue:  5
Journal: Petrochemical Industry Application

Keyword:  介观尺度衰减反射系数;
Abstract: 介观尺度介于地震波长尺度及孔隙颗粒尺度间,地震波传过介观尺度不均匀介质时层间的应力差会引起流体流动,摩擦力使动能向热能转化产生衰减.White层流模型[1堤介观尺度的不饱和模型,该模型中两种饱和介质薄层周期交替.计算了地震频带上纵波穿过饱气层、饱水层周期出现模型的相速度Vp(ω)和品质因子Q(ω);建立无衰减对比模型以计算对反射系数的影响.结果显示纵波入射不饱和层时,反射系数随频率变化明显,尤其是在低频处的衰减峰值附近.
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