地球与行星物理论评（中英文）2025，Vol.56Issue(1)：1-25,25.DOI:10.19975/j.dqyxx.2024-005
地震波泄漏模式研究进展
Advances in the research of seismic-wave leaky modes
摘要
Abstract
When seismic waves propagate in layered structures,dispersion phenomena occur.Based on the characteristics of dispersion curves,underground velocity structures can be estimated.Using the surface-wave dis-persion curves extracted from seismic records and ambient noise for inversion is an important method to constrain the structures of the near surface and lithosphere.In addition to surface waves,significant progress has been made in the research and application of leaky modes and their dispersion in recent years.Leaky modes can provide con-straint information for velocity structure inversion,including P-wave velocity,and can compensate for the short-comings of surface-wave dispersion inversion,which results in more accurate and comprehensive velocity model-ing.However,in comparison to surface waves,the amplitude of leaky waves in seismic records and ambient noise is typically much weaker,which leads to significant challenges for the extraction of leaky modes.Furthermore,the study of leaky modes requires a more intricate theoretical framework and numerical solution techniques,which have historically limited their attention in the scientific community.Over the past decades,the theories of leaky modes have been increasingly improved with the relevant research in seismology,optics,and acoustics,which give rise to effective numerical computation tools.This has laid a solid foundation for the practical application of leaky modes.With the increase of high-quality,high-density observational data and advancements in data processing techniques,geoscientists have successfully extracted leaky mode information from various types of data,including natural and artificial earthquakes,as well as ambient noise.This has led to the development of velocity structure imaging methods based on leaky modes.Currently,this imaging approach has been successfully applied in velocity modeling for earthquakes,ambient noise,and exploration seismology,which indicates promising potential for fur-ther utilization.In this review,we begin by introducing the theories and numerical methods of leaky modes.We further elaborate on the significance of leaky modes in velocity modeling from a sensitivity perspective.Sub-sequently,we review several representative studies to highlight the significant advancements in observation and analyze several proposed inversion techniques.Finally,we delve into the critical issues surrounding the use of leaky modes in seismic imaging.关键词
泄漏模式/频散曲线/背景噪声/速度结构反演Key words
leaky mode/dispersion curve/ambient noise/velocity structure inversion分类
地球科学引用本文复制引用
史才旺,李正波,陈晓非..地震波泄漏模式研究进展[J].地球与行星物理论评（中英文）,2025,56(1):1-25,25.基金项目
国家自然科学基金资助项目(42374062) （42374062）
国家自然科学基金青年基金资助项目(42304066) （42304066）
中国博士后科学基金资助项目(2023M741529) （2023M741529）
广东省地球物理高精度成像技术重点实验室(2022B1212010002)Supported by the National Natural Science Foundation of China(Grant No.42374062),the National Natural Science Foundation for Young Scientists of China(Grant No.42304066),the China Postdoctoral Science Foundation(Grant No.2023M741529),and the Guangdong Provincial Key Laboratory of Geophysical High-resolution Imaging Technology(Grant No.2022B1212010002) （2022B1212010002）
