Blind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimes

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dc.citation.firstpage183en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitleJournal of Environmental and Engineering Geophysicsen_US
dc.citation.lastpage194en_US
dc.citation.volumeNumber18en_US
dc.contributor.authorZelt, Colin A.en_US
dc.contributor.authorHaines, Sethen_US
dc.contributor.authorPowers, Michael H.en_US
dc.contributor.authorSheehan, Jacoben_US
dc.contributor.authorRohdewald, Siegfrieden_US
dc.contributor.authorLink, Curtisen_US
dc.contributor.authorHayashi, Koichien_US
dc.contributor.authorZhao, Donen_US
dc.contributor.authorZhou, Hua-weien_US
dc.contributor.authorBurton, Bethany L.en_US
dc.contributor.authorPetersen, Uni K.en_US
dc.contributor.authorBonal, Nedra D.en_US
dc.contributor.authorDoll, William E.en_US
dc.date.accessioned2013-09-25T17:38:39Zen_US
dc.date.available2013-09-25T17:38:39Zen_US
dc.date.issued2013-09en_US
dc.description.abstractSeismic refraction methods are used in environmental and engineering studies to image the shallow subsurface. We present a blind test of inversion and tomographic refraction analysis methods using a synthetic first-arrival-time dataset that was made available to the community in 2010. The data are realistic in terms of the near-surface velocity model, shot-receiver geometry and the data’s frequency and added noise. Fourteen estimated models were determined by ten participants using eight different inversion algorithms, with the true model unknown to the participants until it was revealed at a session at the 2011 SAGEEP meeting. The estimated models are generally consistent in terms of their large-scale features, demonstrating the robustness of refraction data inversion in general, and the eight inversion algorithms in particular. When compared to the true model, all of the estimated models contain a smooth expression of its two main features: a large offset in the bedrock and the top of a steeply dipping low-velocity fault zone. The estimated models do not contain a subtle low-velocity zone and other fine-scale features, in accord with conventional wisdom. Together, the results support confidence in the reliability and robustness of modern refraction inversion and tomographic Methods.en_US
dc.embargo.termsnoneen_US
dc.identifier.citationZelt, Colin A., Haines, Seth, Powers, Michael H., et al.. "Blind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimes." <i>Journal of Environmental and Engineering Geophysics,</i> 18, no. 3 (2013) Society of Exploration Geophysicists: 183-194. http://dx.doi.org/10.2113/JEEG18.3.183.en_US
dc.identifier.doihttp://dx.doi.org/10.2113/JEEG18.3.183en_US
dc.identifier.urihttps://hdl.handle.net/1911/72113en_US
dc.language.isoengen_US
dc.publisherSociety of Exploration Geophysicistsen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleBlind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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