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dc.contributor.authorZelt, Colin A.
Haines, Seth
Powers, Michael H.
Sheehan, Jacob
Rohdewald, Siegfried
Link, Curtis
Hayashi, Koichi
Zhao, Don
Zhou, Hua-wei
Burton, Bethany L.
Petersen, Uni K.
Bonal, Nedra D.
Doll, William E.
dc.date.accessioned 2013-09-25T17:38:39Z
dc.date.available 2013-09-25T17:38:39Z
dc.date.issued 2013-09
dc.identifier.citation Zelt, 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." Journal of Environmental and Engineering Geophysics, 18, no. 3 (2013) Society of Exploration Geophysicists: 183-194. http://dx.doi.org/10.2113/JEEG18.3.183.
dc.identifier.urihttps://hdl.handle.net/1911/72113
dc.description.abstract Seismic 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.
dc.language.iso eng
dc.publisher Society of Exploration Geophysicists
dc.rights Article 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.
dc.title Blind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimes
dc.type Journal article
dc.contributor.funder U.S. Department of Energy
dc.citation.journalTitle Journal of Environmental and Engineering Geophysics
dc.citation.volumeNumber 18
dc.citation.issueNumber 3
dc.embargo.terms none
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.2113/JEEG18.3.183
dc.identifier.grantID DE-FG02-03ER63662 (U.S. Department of Energy)
dc.type.publication publisher version
dc.citation.firstpage 183
dc.citation.lastpage 194


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