Multimodal inversion of Rayleigh wave dispersion curves based on a generalized misfit function
Fundamental mode dispersions, particularly higher ones obtained from weak and hard interlayers, are usually used for inversion to obtain the S-wave velocity profile. Higher mode dispersions are more informative for surface-wave inversion, thus benefiting both inversion stability and model resolution. In the multimodal inversion of the Rayleigh wave dispersion curves, the conventional root-mean-square based misfit function (RMF) is often deviated when the dispersion modes are misidentified. Alternatively, the inversion based on the determinant misfit function (DMF) may avoid misidentifications, but will still be limited to its inherent local minima. In order to reduce this complexity, the paper presents a generalized misfit function (GMF) for estimating the S-wave velocity profile. The generalized function allows for the inversion of both fundamental and higher modes dispersion, without mode-numbering. Before the inversion, the dispersion points are divided into the recognizable fundamental mode dispersion points and others. The RMF is then calculated using data from distinct fundamental mode dispersion, while the DMF was calculated using data from other points. Lastly, the RMF and the DMF were combined to form the GMF by normalizing. The results are based on both theoretical and real data sets and confirm the advantages of GMF in mode identification and inversion accuracy compared to both RMF and DMF.
National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
|WOS Research Area|
Geology ; Mining & Mineral Processing
Geosciences, Multidisciplinary ; Mining & Mineral Processing
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:1
|Document Type||Journal Article|
|Department||Department of Earth and Space Sciences|
1.School of Geosciences and Info-Physics,Central South University,Changsha,South Lushan Road,410083,China
2.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China
3.Guangdong Provincial Key Laboratory of Geophysical High-resolution Imaging Technology,Southern University of Science and Technology,Shenzhen,518055,China
4.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education,School of Geoscience and Infophysics,Central South University,Changsha,410083,China
5.Hydro-China Xibei Engineering Corporation,Institute of Geophysical Exploration,Xi'An,710043,China
6.National Engineering Research Center of High-speed Railway Construction Technology,Changsha,410075,China
7.Institute of Geophysics and Geomatics,China University of Geosciences 388 Lumo Road,Wuhan,Hubei,430074,China
|Corresponding Author Affilication||Department of Earth and Space Sciences; Southern University of Science and Technology|
Zhang，Dazhou,Yang，Bo,Yang，Zhentao,et al. Multimodal inversion of Rayleigh wave dispersion curves based on a generalized misfit function[J]. JOURNAL OF APPLIED GEOPHYSICS,2022,207.
Zhang，Dazhou.,Yang，Bo.,Yang，Zhentao.,Zhang，Mingcai.,Xiong，Zhangqiang.,...&Zhang，Xueqiang.(2022).Multimodal inversion of Rayleigh wave dispersion curves based on a generalized misfit function.JOURNAL OF APPLIED GEOPHYSICS,207.
Zhang，Dazhou,et al."Multimodal inversion of Rayleigh wave dispersion curves based on a generalized misfit function".JOURNAL OF APPLIED GEOPHYSICS 207(2022).
|Files in This Item:||There are no files associated with this item.|
|Recommend this item|
|Export to Endnote|
|Export to Excel|
|Export to Csv|
|Similar articles in Google Scholar|
|Similar articles in Baidu Scholar|
|Similar articles in Bing Scholar|
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.