The low velocity layer possibly is formed by metamorphic water.
壳内低速层可能是由变质水造成的。
The stack velocity calculated on the floating datum depends on the velocity of medium underlying the low velocity layer and is independent of topography and low velocity layer.
在此浮动基准面上求取的叠加速度仅取决于低速带底板下伏介质的速度，而与地形、低速带无关。
The dispersive characteristics of the Rayleigh waves propagated in the layered media are investigated experimentally by ultrasonic detection test, especially in the presence of a low-velocity layer.
通过超声实验研究了沿分层介质，特别是含有低速层的分层介质传播的瑞利波频散特征。
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