纵、横波匹配影响因素分析

纵、横波匹配在多波多分量地震资料处理和解释之间承担着桥梁作用,纵、横波全面匹配涉及到时间、振幅、频率和相位等方面的匹配,而每个参数对匹配的影响是不同的。为更好地定量分析匹配的影响因素,从理论模型着手,设计了简单的地震模型,分别从纵横波速度比,纵、横波振幅差异,频率差异和相位差异4个方面分析了各参数对纵、横波匹配的影响。结果表明,纵横波速度比对纵、横波匹配的影响最大,其次是相位差异和频率差异,而纵、横波振幅差异不影响匹配效果。

Influential factors of PP-wave and PS-wave matching

PP-wave and PS-wave matching is regarded as the bridge between multi-wave &multi-component seismic data processing and interpretation.The entire matching of PP-wave and PS-wave involves in the matching of time,amplitude,frequency,phase,etc.Different parameters have different impact on the matching result.For better quantitative analysis of the matching factors,we designed a simple seismic numerical model and analyzed the impact of the parameters on the result of PP-wave and PS-wave matching respectively from four aspects of vP/vS,difference of the amplitude,frequency and phase between PP-wave and PS-wave.The results show that vP/vS has the greatest impact on PP-wave and PS-wave matching,followed by phase difference and frequency difference,whereas PP-wave and PS-wave amplitude difference has no impact on matching.