CAJ | 학술논문

通过对典型低速带起伏理论地质模型的常规静校正误差的计算和分析，表明在低速带起伏条件下用常规静校正方法进行低速带静校正存在较大的校正误差，不仅在时间剖面上产生假的同相轴特征现象，而且在反演速度上引起不真实的纵、横向速度变化；证明了低速带静校正误差主要与炮检距、目标层埋深、低速带底界的曲率及形态和低速带与基岩速度差的大小有关。
통과대전형저속대기복이론지질모형적상규정교정오차적계산화분석，표명재저속대기복조건하용상규정교정방법진행저속대정교정존재교대적교정오차，불부재시간부면상산생가적동상축특정현상，이차재반연속도상인기불진실적종、횡향속도변화；증명료저속대정교정오차주요여포검거、목표층매심、저속대저계적곡솔급형태화저속대여기암속도차적대소유관。
Based on calculation and analysis of conventional static correction error in the theoretical model for typical low velocity zone rolling terrain, this paper points out that adopting the conventional static correction method to proceed low velocity zone static correction under the condition of low velocity zone rolling terrain would lead to ratherprominent correction error, which is expressed not only in generating spurious phase axis feature phenomenon, but also in causing wrong longitudinal and latitudinal velocity change in reversion velocity. It is also demonstrated in this paper that the low velocity zone static correction error is mainly related to such factors as the shot-detector separation, the depth of target strarum, the curvature and form of the bottom boundary and the velocity difference between the low velocity zone and the bodrock.