地滚波

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沿地面或靠近地面传播的表面波能量。通常以较低的速度,较低的频率和较高的振幅为特征。地滚波经常掩盖有用的反射信号。源和地震检波器模式,频率滤波,f-k滤波和叠加可用来消除它。通常是一种修改的Rayleigh wave (q.v.),地滚有时称为伪瑞利波。参见图R-3