{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T20:29:23Z","timestamp":1780345763744,"version":"3.54.1"},"reference-count":35,"publisher":"Society of Exploration Geophysicists","issue":"1","funder":[{"name":"CWP Consortium Sponsors"},{"name":"CWP Consortium Sponsors"}],"content-domain":{"domain":["library.seg.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,1,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Accurately modeling full-wavefield solutions at and near the seafloor is challenging for conventional single-domain elastic finite-difference (FD) methods. Because they treat the fluid layer as a solid with zero shear-wave velocity, the energy partitioning for body and surface waves at the seafloor is distorted. This results in incorrect fluid\/solid boundary conditions, which has significant implications for imaging and inversion applications that use amplitude information for model building. To address these issues, here we use mimetic FD (MFD) operators to develop and test a numerical approach for accurately implementing the boundary conditions at a fluid\/solid interface. Instead of employing a single \u201cglobal\u201d model domain, we partition the full grid into two subdomains that represent the acoustic and elastic (possibly anisotropic) media. A novel split-node approach based on one-sided MFD operators is introduced to distribute grid points at the fluid\/solid interface and satisfy the wave equation and the boundary conditions. Numerical examples demonstrate that such MFD operators achieve stable implementation of the boundary conditions with the same (fourth) order of spatial accuracy as that inside the split-domain interiors. We compare the wavefields produced by the MFD scheme with those from a more computationally expensive spectral-element method to validate our algorithm. The modeling results help analyze the events associated with the fluid\/solid (seafloor) interface and provide valuable insights into the horizontal displacement or velocity components (e.g.,\u00a0recorded in ocean-bottom-node data sets). The developed MFD approach can be efficiently used in elastic anisotropic imaging and inversion applications involving ocean-bottom seismic data.<\/jats:p>","DOI":"10.1190\/geo2020-0092.1","type":"journal-article","created":{"date-parts":[[2020,10,14]],"date-time":"2020-10-14T03:21:59Z","timestamp":1602645719000},"page":"T45-T59","update-policy":"https:\/\/doi.org\/10.1190\/crossmark-policy","source":"Crossref","is-referenced-by-count":24,"title":["Mimetic finite-difference coupled-domain solver for anisotropic media"],"prefix":"10.1190","volume":"86","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5644-5701","authenticated-orcid":false,"given":"Harpreet","family":"Sethi","sequence":"first","affiliation":[{"name":"Colorado School of Mines 1 , Golden, Colorado 80401-1887, USA. E-mail: hsethi@mymail.mines.edu (corresponding author); jshragge@gmail.com ; ilya@mines.edu ."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1986-0399","authenticated-orcid":false,"given":"Jeffrey","family":"Shragge","sequence":"additional","affiliation":[{"name":"Colorado School of Mines 1 , Golden, Colorado 80401-1887, USA. E-mail: hsethi@mymail.mines.edu (corresponding author); jshragge@gmail.com ; ilya@mines.edu ."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilya","family":"Tsvankin","sequence":"additional","affiliation":[{"name":"Colorado School of Mines 1 , Golden, Colorado 80401-1887, USA. E-mail: hsethi@mymail.mines.edu (corresponding author); jshragge@gmail.com ; ilya@mines.edu ."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"186","published-online":{"date-parts":[[2021,1,8]]},"reference":[{"key":"2026041614501397700_r1","doi-asserted-by":"crossref","unstructured":"Bourgeois\n              A.\n            \n            \n              Bourget\n              M.\n            \n            \n              Lailly\n              P.\n            \n            \n              Poulet\n              M.\n            \n            \n              Ricarte\n              P.\n            \n            \n              Versteeg\n              R.\n            \n            \n              Grau\n              G.\n            \n          , 1991, Marmousi, model and data, inVersteegR.GrauG., eds., The Marmousi Experience, Proceedings of the 1990 EAEG Workshop on Practical Aspects of Seismic Data Inversion: EAGE, 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in media with a fluid-solid interface","volume":"200","author":"De Basabe","year":"2014","journal-title":"Geophysical Journal International","ISSN":"https:\/\/id.crossref.org\/issn\/0956-540X","issn-type":"print"},{"key":"2026041614501397700_r6","doi-asserted-by":"crossref","first-page":"1709","DOI":"10.1121\/1.390970","article-title":"Generation of acoustic waves by an impulsive point source in a fluid\/solid configuration with a plane boundary","volume":"75","author":"de Hoop","year":"1984","journal-title":"The Journal of the Acoustical Society of America"},{"issue":"3","key":"2026041614501397700_r7","doi-asserted-by":"crossref","first-page":"T125","DOI":"10.1190\/geo2013-0371.1","article-title":"Mimetic seismic wave modeling including topography on deformed staggered grids","volume":"79","author":"de la 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perfectly matched layer improved at grazing incidence for the seismic wave equation","volume":"72","author":"Komatitsch","year":"2007","journal-title":"Geophysics","ISSN":"https:\/\/id.crossref.org\/issn\/0016-8033","issn-type":"print"},{"issue":"2","key":"2026041614501397700_r12","doi-asserted-by":"crossref","first-page":"T45","DOI":"10.1190\/geo2019-0181.1","article-title":"Modeling full-wavefield time-varying sea-surface effects on seismic data: A mimetic finite-difference approach","volume":"85","author":"Konuk","year":"2020","journal-title":"Geophysics","ISSN":"https:\/\/id.crossref.org\/issn\/0016-8033","issn-type":"print"},{"key":"2026041614501397700_r13","doi-asserted-by":"crossref","first-page":"551","DOI":"10.1111\/j.1365-246X.2006.03233.x","article-title":"Scholte-wave tomography for shallow-water marine sediments","volume":"168","author":"Kugler","year":"2007","journal-title":"Geophysical Journal International","ISSN":"https:\/\/id.crossref.org\/issn\/0956-540X","issn-type":"print"},{"key":"2026041614501397700_r14","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1016\/0041-5553(64)90240-X","article-title":"Difference analogues of orthogonal decompositions, basic differential operators and some boundary problems of mathematical physics. 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anisotropic elastic materials and curvilinear coordinates using a summation-by-parts finite difference method","volume":"299","author":"Petersson","year":"2015","journal-title":"Journal of Computational Physics","ISSN":"https:\/\/id.crossref.org\/issn\/0021-9991","issn-type":"print"},{"issue":"3","key":"2026041614501397700_r20","doi-asserted-by":"crossref","first-page":"R113","DOI":"10.1190\/geo2018-0743.1","article-title":"Fluid-solid coupled full-waveform inversion in the curvilinear coordinates for ocean-bottom cable data","volume":"85","author":"Qu","year":"2020","journal-title":"Geophysics","ISSN":"https:\/\/id.crossref.org\/issn\/0016-8033","issn-type":"print"},{"key":"2026041614501397700_r21","doi-asserted-by":"crossref","first-page":"3532","DOI":"10.1121\/1.412439","article-title":"A numerical study of seafloor scattering","volume":"97","author":"Robertsson","year":"1995","journal-title":"The Journal of the Acoustical Society of America"},{"key":"2026041614501397700_r22","unstructured":"Rojas\n              O.\n            \n          , 2007, Mimetic finite difference modeling of 2D elastic P-SV wave propagation: Qualifying examination report, Computational Science Research Center, San Diego State University."},{"key":"2026041614501397700_r23","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1111\/j.1365-246X.2007.03651.x","article-title":"Modelling of rupture propagation using high-order mimetic finite differences","volume":"172","author":"Rojas","year":"2008","journal-title":"Geophysical Journal International","ISSN":"https:\/\/id.crossref.org\/issn\/0956-540X","issn-type":"print"},{"issue":"6","key":"2026041614501397700_r24","doi-asserted-by":"crossref","first-page":"T363","DOI":"10.1190\/geo2014-0172.1","article-title":"Solving the 3D acoustic wave equation on generalized structured meshes: A finite-difference time-domain 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collocated-grid finite-difference method on curvilinear grids","volume":"190","author":"Zhang","year":"2012","journal-title":"Geophysical Journal International","ISSN":"https:\/\/id.crossref.org\/issn\/0956-540X","issn-type":"print"}],"container-title":["Geophysics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.geoscienceworld.org\/seg\/geophysics\/article-pdf\/86\/1\/T45\/5229986\/geo-2020-0092.1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.geoscienceworld.org\/seg\/geophysics\/article-pdf\/86\/1\/T45\/5229986\/geo-2020-0092.1.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T18:50:25Z","timestamp":1776365425000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.geoscienceworld.org\/geophysics\/article\/86\/1\/T45\/593826\/Mimetic-finite-difference-coupled-domain-solver"},"secondary":[{"URL":"https:\/\/pubs.geoscienceworld.org\/geophysics\/article\/86\/1\/t45\/593826\/mimetic-finite-difference-coupled-domain-solver","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1,1]]},"references-count":35,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,1,1]]}},"URL":"https:\/\/doi.org\/10.1190\/geo2020-0092.1","relation":{},"ISSN":["0016-8033","1942-2156"],"issn-type":[{"value":"0016-8033","type":"print"},{"value":"1942-2156","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1,1]]},"assertion":[{"value":"2020-02-14","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication 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