面波频散曲线快速追踪算法  

Auto-tracing method in surface-wave dispersion curves computation

作　　者：肖翔[1] 徐果明[1] 朱良保[1] 

机构地区：[1]中国科学技术大学地球和空间科学学院,中国安徽230026

出　　处：《地震地磁观测与研究》2004年第3期1-7,共7页Seismological and Geomagnetic Observation and Research

摘　　要：层状地球模型面波频散理论传播矩阵法采用传统的Knopoff′sroot bracketing算法求频散函数的根即相速度 ,并广泛应用至今。本文提出了一个自动追踪求根算法 ,使频散曲线的计算变得更为有效 ,方便和快速。The propagator matrix method in surface-wave dispersion computation of plane-layered earth models, which adopts a traditional Knopoff′s root-bracketing algorithm to find the roots (or phase velocities) of dispersion function, is widely used even now. From another point of view, we present an auto-tracing root-bracket algorithm as a improvement on Knopoff′s root-bracketing algorithm, which makes the dispersion computation faster, more accurate and more convenient.

关 键 词：面波 频散曲线 自动追踪 root-bracketing 

分 类 号：P631.4[天文地球—地质矿产勘探]