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| 用改进的τ-p变换算法提取瞬态瑞雷波频散曲线 | |
| 引用本文： | 宋先海,肖柏勋,张学强,顾汉明,刘江平.用改进的τ-p变换算法提取瞬态瑞雷波频散曲线[J].物探与化探,2003,27(4):292-295. |
| 作者姓名： | 宋先海 肖柏勋 张学强 顾汉明 刘江平 |
| 作者单位： | 1. 长江工程地球物理勘测研究院,湖北,武汉,430010 2. 中国地质大学,应用地球物理系,湖北,武汉,430074 |
| 基金项目： | 九·五"国家重点科技攻关项目(96-221-01-02-05),长江水利委员会综合勘测局科技发展基金资助项目(KY2000-4) |
| 摘 要： | 传统的τ-p变换算法易出现假频和端点效应.基于前人的思想,笔者对时空域中传统的τ-p变换算法进行了改进,有效地解决了上述问题.理论模型试算证实了本算法的正确性和有效性,实例分析结果表明,用改进后的τ-p变换算法进行波场分离提取瞬态瑞雷波频散曲线具有失真小、可靠性高、压制假频和端点效应好等优点. |
| 关 键 词： | 瞬态瑞雷波 波频散曲线 τ-p变换 假频和端点效应 双曲线速度滤波 |
| 文章编号： | 1000-8918(2003)04-0292-04 |
| 收稿时间： | 2002-09-23 |
THE APPLICATION OF IMPROVED τ-p TRANSFORM ALGORITHM TO THE EXTRACTION OF DISPERSION CURVE OF TRANSIENT RAYLEIGH WAVE |
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| Institution: | 1. Institute of Changjiang Engineering Geophysical Prospecting, Wuhan 430010, China; 2. Department of Applied Geophysics, China University of Geosciences, Wuhan 430074, China |
| Abstract: | Traditional transform algorithm has been improved in this paper. The new efficient algorithm has overcome the troubles of false frequency and port effect existing in traditional transform algorithm. The test of theoretical models and the field seismic data indicate that the improved transform algorithm has the merits of good stability, high reliability and weak distortion, and can efficiently eliminate false frequency and port effect. |
| Keywords: | transient Rayleigh wave dispersion curve τ-p transform false frequency and port effect hyperbola velocity filter |
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