摘要
为了提高复杂地区初至拾取的精度和效率,对基于地震道时窗属性特征拾取初至的能量比法、振幅比法、瞬时强度比法和曲线长度比法进行了对比研究,着重分析了4种方法的拾取精度。研究结果表明:4种方法都能准确、有效地拾取初至,能量比法和瞬时强度比法拾取精度明显高于振幅比法和曲线长度比法;通过变换滑动时窗长度和加入稳定因子,4种方法都能更准确、更有效地拾取初至。
Four methods of picking first arrival based on window attribute of seismic trace are studied in the paper.The 4 methods are energy ratio method,amplitude ratio method,instantaneous intensity ratio method and curve length ratio method.Results show that the 4 methods can all detect the first arrival effectively.The accuracy of the energy ratio method and the instantaneous intensity ratio method are significantly higher than that of the amplitude ratio method and the curve ratio method.Introduction of changeable sliding window length and stabilizer further improve the accuracy of the 4 methods.
出处
《勘探地球物理进展》
2009年第6期441-444,共4页
Progress in Exploration Geophysics
关键词
时窗属性
能量比
振幅比
初至
time window attribute
energy ratio
amplitude ratio
first arrival
