It is rare that salt dome surface itself yields a clearly defined reflection . 盐丘表面本身产生明显反射波的情况，并不多见。
2.
There are many salt dome structures within the salt sediment group 盐上层系?上二叠统一第四系。
3.
Using the wave equation prestack depth migration on seg - eage 2 - d salt dome model as an example , the two - order generalized screen propagator increases 30 % calculation work relative to the conventional one - order ) generalized screen propagator 以seg - eage二维盐丘模型数据的波动方程叠前深度偏移为例，二阶广义屏传播算子相对于常规（一阶）广义屏传播算子增加了30 %的计算量。
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