The wave-field continuations along up-going wavefront or down -going wavefront are the two methods we can take to ensure the all -dip migration of wave field.
沿上行波波前或下行波波前进行波场延拓是确保波场全倾角归位仅能采用的两种延拓方法。
The all-dip migration using ladder difference scheme not only effectively removes cross-interference but also preserves amplitude characteristic of steep-dip reflections.
其中阶梯型全倾角偏移既能有效地消除交叉干扰，又能保持大倾角反射波的振幅特性。
The second migration power include buoyancy and tectonic activity, which controlled by stratum dip and faulting.
二次运移的动力包括浮力和构造活动力，其主要影响因素是地层倾角和断裂活动强度。
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