虚拟震源地震探测方法及其应用  

Virtual deep seismic sounding method and its applications

作　　者：张明辉 徐涛[2,3] 田小波[3,4] 唐国彬[2,5] 刘震 白志明 Zhang Minghui;Xu Tao;Tian Xiaobo;Tang Guobin;Liu Zhen;Bai Zhiming(School of Information Engineering,Shandong University of Aeronautics,Binzhou 256600,China;Key Laboratory of Mineral Resources,Chinese Academy of Sciences,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029,China;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Geophysics,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]山东航空学院信息工程学院,滨州256600 [2]中国科学院地质与地球物理研究所中国科学院矿产资源研究重点实验室,北京100029 [3]中国科学院地球科学研究院,北京100029 [4]中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京100029 [5]中国科学院大学,北京100049 [6]成都理工大学地球物理学院,成都610059

出　　处：《地球与行星物理论评（中英文）》2025年第2期215-224,共10页Reviews of Geophysics and Planetary Physics

基　　金：国家自然科学基金资助项目(42104102);第二次青藏高原综合科学考察研究项目(2019QZKK0701-02);山东航空学院博士科研启动费资助项目(801002018315)。

摘　　要：SsPmp震相是远震直达S波在地表激发的下行P波在Moho面反射的震相,具有信号能量大、信噪比高、不易受近地表沉积层和地壳小尺度结构扰动的影响等优势.虚拟地震测深方法(VDSS)是近年来发展的利用SsPmp震相与直达Ss波震相的到时差来研究地壳厚度(或Moho面深度)的探测方法.本文介绍了VDSS方法的原理、优势及其在实际应用中的表现.研究表明,VDSS方法在提高探测精度、降低成本、环境影响等方面具有显著优势,且成功应用于克拉通、造山带和沉积盆地、峨眉山大火成岩省等不同地质环境中,在探测地壳结构中展现出巨大潜力和应用价值.但是VDSS方法的准确度高度依赖于地震数据的质量,尤其是远震S波的清晰度和震中距的范围,使得该方法在复杂地质结构区域的应用受到较大限制.未来,VDSS与传统接收函数方法、地震层析成像、重力测量等多类地球物理方法的结合,有望为地壳结构探测提供更全面的约束.The SsPmp seismic phase is a seismic phase in which the downward P-wave excited by the far-field direct S-wave is reflected on the Moho surface.It has the advantages of high signal energy,high signal-to-noise ratio,and is not easily affected by the disturbance of near surface sedimentary layers and small-scale crustal structures.Virtual deep seismic sounding method(VDSS)is a detection method developed in recent years that uses the arrival time difference between SsPmp seismic phase and direct Ss wave seismic phase to study crustal thickness(or Moho depth).This article introduces the principles,advantages,and practical applications of the VDSS method.Research has shown that the VDSS method has significant advantages in improving detection accuracy,reducing costs,and environmental impact,and has been successfully applied in different geological environments such as the craton,orogenic belts and sedimentary basins,and the Emeishan large igneous province.It has shown great potential and application value in crustal structure detection.However,the accuracy of the VDSS method is highly dependent on the quality of seismic data,especially the clarity of far-field S-waves and the range of epicenter distance,which greatly limits the appliation of this method in areas with complex geological structures.In the future,the combination of VDSS with traditional receiver function methods,seismic tomography,gravity measurements,and other geophysical methods is expected to provide more comprehensive constraints for crustal structure exploration.

关 键 词：虚拟地震测深方法 SsPmp震相 地壳结构探测 

分 类 号：P315[天文地球—地震学]