The phase relations between the first arrivals of compressional and shear waves, and their signification to full wave logging

This paper describes the three phenomena observed in full wave experiments： 1. the amplitudes （absolute value） of the first compressional and shear arrivals have the same variation rules; 2. the phases of the first compressional and shear arrivals are always opposite to each other; and 3. the amplitude variation periods of the first compressional and shear arrivals are 2π. A full analysis and interpretation points out that these phenomena should appear under the full wave logging condition. Hence,the basis of using phase diffrences to extract useful information from the full wave is found.

这篇论文描述在完整的波浪实验观察的三现象：1。振幅(绝对值) 第一有压缩性并且砍到达有一样的变化规则；2。阶段第一有压缩性并且砍到达对对方总是相反；并且 3。振幅变化时期第一有压缩性并且砍到达是 2 π 。完整的分析和解释指出这些现象应该在记载状况的完整的波浪下面出现。因此，使用阶段差别从完整的波浪提取有用信息的基础被发现。