| 波形反演遗传算法及其在地震测深数据解释中的应用 |
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| 引用本文： | 王夫运,张先康.波形反演遗传算法及其在地震测深数据解释中的应用[J].地震学报,2006,28(2):158-166. |
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| 作者姓名： | 王夫运 张先康 |
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| 作者单位： | （中国郑州450002中国地震局地球物理勘探中心） |
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| 基金项目： | 国家高技术研究发展计划(863计划)，地震科学联合基金 |
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| 摘 要： | 为了更好地利用地震测深波形数据，提出了地震体波波形反演的遗传算法. 正演使用能精确快速计算互层结构响应的广义反、透射系数理论地震图算法；反演采用遗传算法，实现了地震体波波形反演的遗传算法. 数值试验表明，该算法具有分辨壳内低速层、高低速薄互层结构和一定的抗噪能力. 青藏高原东北缘泽库、夏河、临洮3炮地震测深P波波形反演，得到了上地壳底部低速层和中、下地壳，以及上地幔顶部薄互层的细结构图象.
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| 关 键 词： | 遗传算法 波形反演 数值试验 地震测深 地壳精细结构 |
| 文章编号： | 0253-3782(2006)02-0158-09 |
| 修稿时间： | 2005年8月19日 |
GENETIC ALGORITHM IN SEISMIC WAVEFORM INVERSION AND ITS APPLICATION IN DEEP SEISMIC SOUNDING DATA INTERPRETATION |
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| Wang Fuyun,Zhang Xiankang.GENETIC ALGORITHM IN SEISMIC WAVEFORM INVERSION AND ITS APPLICATION IN DEEP SEISMIC SOUNDING DATA INTERPRETATION[J].Acta Seismologica Sinica,2006,28(2):158-166. |
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| Authors: | Wang Fuyun Zhang Xiankang |
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| Abstract: | A genetic algorithm of body waveform inversion is presented for better understanding of crustal and upper mantle structures with deep seismic sounding waveform data. General reflection and transmission synthetic seismogram algorithm, which is capable of calculating the response of thin alternating high and low velocity layers, is applied as a solution for forward modeling, and the genetic algorithm is used to find the optimal solution of the inverse problem. Numerical tests suggest that the method has the capability of resolving low-velocity layers, thin alternating high and low velocity layers, and noise suppression. Waveform inversion using P-wave records from Zeku, Xiahe and Lintao shots in the seismic wide-angle reflection/refraction survey along northeastern Qinghai-Xizang (Tibeteau) Plateau has revealed fine structures of the bottom of the upper crust and alternating layers in the middle/lower crust and topmost upper mantle. |
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| Keywords: | genetic algorithm waveform inversion numerical test deep seismic sounding fine crustal structure |
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