| 菲涅耳体地震层析成像分辨率研究 |
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| 引用本文： | 刘玉柱,董良国,朱金平.菲涅耳体地震层析成像分辨率研究[J].地球物理学报,2011,54(9):2338-2347. |
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| 作者姓名： | 刘玉柱 董良国 朱金平 |
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| 作者单位： | 1. 同济大学海洋地质国家重点实验室,上海 200092;
2. 同济大学海洋与地球科学学院,上海 200092 |
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| 基金项目： | 国家自然科学基金(40804023)、国家高技术研究发展计划(2008AA093001)、国家科技重大专项(2008ZX05005-005-007HZ)共同资助. |
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| 摘 要： | 层析成像分辨率的研究,不仅可以帮助分析层析方法的反演能力,评价层析反演的效果,还可以帮助指导层析参数设置,优化观测系统设计等.本文对比研究了前人提出的两种菲涅耳体层析成像分辨率的计算方法,并针对其存在的问题进行了优化.文中通过对二维理论模型的定量计算,总结了菲涅耳体地震层析成像分辨率的一些规律,并将其与射线层析的分辨率...
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| 关 键 词： | 地震层析成像 反演分辨率 反演分辨力 菲涅耳体 射线 变网格 |
| 收稿时间： | 2010-10-08 |
Research on the seismic resolution of Fresnel volume tomography |
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| LIU Yu-Zhu,DONG Liang-Guo,ZHU Jin-Ping.Research on the seismic resolution of Fresnel volume tomography[J].Chinese Journal of Geophysics,2011,54(9):2338-2347. |
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| Authors: | LIU Yu-Zhu DONG Liang-Guo ZHU Jin-Ping |
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| Institution: | 1. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;
2. School of Ocean and Earth Science, Tongji University, Shanghai 200092, China |
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| Abstract: | The research on the resolution of seismic tomography can not only help us understand the ability of inversion, but also give instructions on setting of tomography parameters and optimization of seismic survey. We compare two previous methods calculating the seismic resolution of Fresnel volume tomography (FVT), and propose the corresponding optimization method. Through quantitative experiments on the synthetic data, some regularities about seismic resolution of FVT are summarized. Also, the resolutions of raypath tomography and FVT are compared. Finally, we give suggestions on seismic survey design and tomography, especially on parameters setting, including model partition and variable window size for smoothing in dynamic tomography. |
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| Keywords: | Seismic tomography Inverse resolution Inverse resolution power Fresnel volume Raypath Dynamic gridding |
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