首页 | 本学科首页   官方微博 | 高级检索  
     检索      

一种改进的地震反射层析成像方法
引用本文:井西利,杨长春,王世清.一种改进的地震反射层析成像方法[J].地球物理学报,2007,50(6):1831-1836.
作者姓名:井西利  杨长春  王世清
作者单位:1.燕山大学理学院, 秦皇岛 066004;2.中国科学院地质与地球物理研究所, 北京 100029;3.大庆物探研究所, 大庆 163357
基金项目:国家自然科学基金项目(40374048)资助
摘    要:针对复杂介质的地震反射走时层析成像存在数据拾取困难问题,本文提出了一种新的地震反射层析成像速度模型建立方法,该方法用速度和地震射线走时描述模型,用地震反射波走时、地震波在源点和接收点处的传播方向信息反演模型.为提高反演的稳定性和计算效率,引入了Hamilton函数描述射线,在相空间计算反演所需的射线路径和目标函数对模型参数的导数,对理论模型和实际地震资料进行了试算,试算表明该方法对复杂介质具有较强的适应能力.

关 键 词:地震波  层析成像  模型  速度  
文章编号:0001-5733(2007)06-1831-06
收稿时间:2006-7-30
修稿时间:2006-07-30

A improved seismic reflection tomographic method
JING Xi-Li,YANG Chang-Chun,WANG Shi-Qing.A improved seismic reflection tomographic method[J].Chinese Journal of Geophysics,2007,50(6):1831-1836.
Authors:JING Xi-Li  YANG Chang-Chun  WANG Shi-Qing
Institution:1.College of Science, Yanshan University,Qinhuangdao 066004, China;2.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100;029, China;3.Daqing Geophysical Exploration Institute, Daqing 163357, China
Abstract:Data picking is difficult for seismic reflection traveltime tomography in complex media.In this study a new seismic reflection tomographic method is proposed for estimating velocity model from seismic data in complex media,in which the model is described by velocity field and a set of ray traveltimes.It consists of fitting seismic ray traveltimes and positions to data calculated by ray tracing.In order to improve inversion stability and efficiency,seismic ray is described by Hamilton function and ray tracing is done in phase space.Validation tests on synthetic and practical data are analyzed.The tests show that this tomographic method is effective for estimating velocity field in complex media.
Keywords:Seismic wave  Tomography  Model  Velocity
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《地球物理学报》浏览原始摘要信息
点击此处可从《地球物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号