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在德克萨斯休斯敦附近选取了一试验场地进行了浅层P波地震震源的对比。地下水面深度大约为7米,表层介质由粘土、砂以及砾石组成。在1991年11月对12种不同震源产生的数据进行了处理和分析,对220赫兹低截频滤波模拟波场记录及大部分110～220赫兹低截频滤波波场记录上反射同相轴可以做
A test site near Houston, Texas, was used to compare the focal depths of the shallow P waves. Groundwater depth of about 7 meters, the surface medium from clay, sand and gravel composition. In November 1991, data from 12 different sources were processed and analyzed. Reflecting the reflection events on 220 Hz low cutoff filtered wavefield records and most of the 110-220 Hz low cutoff wavefield records