| 黏弹介质VSP高斯射线正演模拟 |
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| 引用本文： | 魏峥嵘,杨飞龙,刘保华,裴彦良.黏弹介质VSP高斯射线正演模拟[J].地球物理学进展,2020(2):656-662. |
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| 作者姓名： | 魏峥嵘 杨飞龙 刘保华 裴彦良 |
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| 作者单位： | 长安大学地质工程与测绘学院;西安石油大学地球科学与工程学院;国家深海基地管理中心;自然资源部第一海洋研究所 |
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| 基金项目： | 国家重点研发计划(2016YFC0303901);国家自然科学基金(国家基金委-山东省联合基金项目)“海洋地质过程与环境”(U1606401);“泰山学者工程专项”(TSPD20161007)联合资助. |
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| 摘 要： | 为了研究黏弹介质中VSP地震勘探地震波的波场特征,在理论分析地震波在黏弹介质中传播特性的基础上,采用高斯射线束方法对黏弹介质VSP地震进行波场正演模拟.正演结果与各向同性介质及VTI介质VSP正演对比,体现了地震波在黏弹介质中传播的特点.同时VSP高斯束正演方法能够解决复杂构造正演盲区问题,其动力学特征更能反映黏弹介质对地震波传播的影响,计算速度又优于波动方程类正演方法,正演结果能有效分辨地震波场特征,为VSP数据处理与解释提供了借鉴.
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| 关 键 词： | 黏弹介质 VTI介质 高斯射线束 正演模拟 |
Study of VSP Gaussian beam forward modeling in visco-elastic media |
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| WEI Zheng-rong,YANG Fei-long,LIU Bao-hua,PEI Yan-liang.Study of VSP Gaussian beam forward modeling in visco-elastic media[J].Progress in Geophysics,2020(2):656-662. |
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| Authors: | WEI Zheng-rong YANG Fei-long LIU Bao-hua PEI Yan-liang |
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| Affiliation: | (College of the Geological Engineering and Geomatics,Chang’an University,Xi’an 710054,China;College of the Geoscience and Engineering,Xi’an Shiyou University,Xi’an 710065,China;National Deep See Center,Qingdao 266237,China;Key Laboratory of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,MNR,Qingdao 266061,China) |
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| Abstract: | Based on the theoretical analysis of seismic wave propagation characteristics in visco-elastic media, Gaussian beam forward modeling method was used to simulate Vertical Surface Profile(VSP)wave field of visco-elastic media in order to study the characteristics of seismic waves of VSP seismic exploration. With contrasting the result of the record with isotropic media and VTI media forward modeling, the characteristics of seismic waves propagation in visco-elastic media are demonstrated. At the same time, the VSP Gaussian beam forward method can solve the blind zone problem of isotropic structures. Its dynamic characteristics can better reflect the influence of various isotropic media on seismic wave propagation, and the calculation speed is better than the wave equation forward method. The forward results can effectively distinguish seismic waves. Field characteristics, which can provide reference for VSP data processing and interpretation. |
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| Keywords: | Visco-elastic media VTI media Gaussian Beam Forward modeling |
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