【摘要】 基于统计学方法建立了随机-均匀介质模型,利用有限差分法进行正演模拟,根据地震剖面中散射波同相轴随着模型横向自相关长度的增大其连续性逐渐变好的特点,通过相干技术研究了散射波同相轴的连续性.研究结果表明,当模型横向自相关长度与地震波长比值较小(a/λ<1)时,散射波同相轴连续性较差,其相干值变化不明显;当模型横向自相关长度与地震波长比值较大(a/λ>1)时,散射波同相轴连续性明显变好,其相干值明显增大.更多还原

【Abstract】 A random-uniform medium model was constructed based on the statistical method and was forward modeled using the finite-difference method.According to the feature that the continuity of scattered waves in seismic sections gradually becomes better with lateral autocorrelation lengths in models becoming larger,event continuity of scattered wave was studied by coherence technique.The research results show that event continuity of scattered wave is worse when the ratio of lateral autocorrelation length to seismic wavelength is smaller(a/λ<1),and the coherence values variety is not obvious.When the ratio of lateral autocorrelation length to seismic wavelength is larger(a/A>1),event continuity of scattered wave becomes better obviously,and the coherence values increase distinctly.更多还原