作　　者： ; ; ; ; ;

机构地区： 中国地质大学北京地球物理与信息技术学院地下信息探测技术与仪器教育部重点实验室

出　　处： 《物探与化探》 2009年第2期178-180,共3页

摘　　要： 基于地震道时窗属性特征,对地震波初至拾取能量比法进行系统的研究,比较了固定、滑动和变换时窗能量比法的原理及应用效果。研究表明,固定和滑动时窗能量比法的处理效果较差,在拾取过程中对某些特殊点的处理上存在较大的误差;而采用变换时窗长度统计法后,初至曲线的同向轴变得更加光滑,拾取异常点的情况大为减少,从而有效地提高拾取精度。 Based on seismic attributes of the time window, the authors studied the methods of first arrival wave pickup by using energy ratio. A comparison was made in theory and application effects of statistical energy ratios between such means as solid, rolling and changing time windows. The results show that the effects of solid and rolling time windows are relatively poor, with considerable errors existent in the process of picking some special points. When the transform length of the time window statistical method is employed, the event of the first arrival curve becomes more smooth, and the abnormal points are greatly reduced, thus effectively improving the pickup accuracy.

关 键 词： 能量比 拾取 地震初至波 变换时窗

领　　域： [天文地球] [天文地球]