【摘要】 本文基于仅包含一次波和自由界面多次波的原始浅剖资料地震波场,推导出适应于单道数据的自由界面多次波预测方程,并提出基于同相轴追踪的多次波剔除与多道维纳滤波相结合的组合匹配衰减方法,实现了高精度的浅剖数据自由界面多次波预测与衰减,理论模型与实际浅地层剖面的处理实验均证明了该多次波预测与匹配衰减方法的有效性。更多还原

【Abstract】 Based upon the assumption of the source seismic wavefield consists of not only the primaries but also all the orders of surface multiples within sub-bottom profile data,the thesis derives prediction equation of surface-related multiple which is applicable to single trace data,and introduces a combined matching attenuation method which consists of event tracing multiple subtraction and multi-channel Wiener filtering.Therefore,the high accuracy multiple prediction and elimination method has been implemented for sub-bottom profile processing.Synthetic and field data tests prove that the method has better effectiveness.更多还原