【作者】 张中杰； 秦义龙； 陈赟； 张超英； 孙善学； 赵兵； 刘一峰； 刘振宽；

【Author】 ZHANG Zhong-Jie~1 QIN Yi-Long~1 CHEN Yun~1 ZHANG Chao-Ying~1 SUN Shan-Xue~1 ZHAO Bing~1 LIU Yi-Feng~1 LIU Zhen-Kuan~2 1 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2 Geophysics and Information Technology Department,China University of Geosciences,Beijing 100083,China

【机构】 中国科学院地质与地球物理研究所； 中国地质大学(北京)地球物理与信息技术学院；

【摘要】 针对人工源宽角地震测深中炮点与接收点稀疏的特点,利用几何散射理论进行壳幔散射体的相似性剖面成像,利用互易性原理计算散射体相似性成像的时间条件,研究基于宽角反射地震资料重建壳幔反射结构的相似性成图方法.其中,成像点的时间采用快速、高精度的程函方程求解技术.利用该方法处理东南陆缘区宽角反射剖面实际资料,结果表明,较之壳幔反射结构的CDP成图技术,相似性成图方法具有提高反射同相轴横向连续性的能力.更多还原

【Abstract】 Since the shots and receivers are sparse in active wide-angle seismic exploration,we use wide-angle reflection seismic data to reconstruct the semblance section of reflection structure in the crust and mantle based on the diffraction theory.The travel-time conditions for reconstructing the semblance section are calculated using the reciprocity principal,and the travel-time field from shots and receivers are computed using Eikonal solvers which have the advantage of high efficiency and accuracy.The results from processing real wide-angle reflection seismic data in southeastern China showed that this method can improve the horizontal consistency of reflection events compared with CDP mapping.更多还原