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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
Through the calculation and analysis of the conventional static correction error of the typical low-velocity zone undulation geological model, it is shown that there is a large correction error in the low-velocity zone static correction using the conventional static correction method under the condition of low velocity fluctuation, not only generating the false , But also caused unrealistic longitudinal and lateral velocity changes in the inversion speed. It is proved that the low-speed zone static correction error is mainly related to offset, target depth, curvature and shape at the bottom of low velocity zone and low velocity Belt and bedrock speed difference between the size