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dc.contributor.authorAlexandrov, Dmitry
dc.contributor.authorWaheed, Umair bin
dc.contributor.authorEisner, Leo
dc.date.accessioned2021-01-26T12:59:54Z
dc.date.available2021-01-26T12:59:54Z
dc.date.issued2021-01-22
dc.date.submitted2020-12-28
dc.identifier.citationAlexandrov, D., Waheed, U. bin, & Eisner, L. (2021). Microseismic Location Error Due to Eikonal Traveltime Calculation. Applied Sciences, 11(3), 982. doi:10.3390/app11030982
dc.identifier.issn2076-3417
dc.identifier.doi10.3390/app11030982
dc.identifier.urihttp://hdl.handle.net/10754/667047
dc.description.abstractThe accuracy of computed traveltimes in a velocity model plays a crucial role in localization of microseismic events. The conventional approach usually utilizes robust fast sweeping or fast marching methods to solve the eikonal equation numerically with a finite-difference scheme. These methods introduce traveltime errors that strongly depend on the direction of wave propagation. Such error results in moveout changes of the computed traveltimes and introduces significant location bias. The issue can be addressed by using a finite-difference scheme to solve the factored eikonal equation. This equation yields significantly more accurate traveltimes and therefore reduces location error, though the traveltimes computed with the factored eikonal equation still contain small errors with systematic bias. Alternatively, the traveltimes can be computed using a physics-informed neural network solver, which yields more randomized traveltimes and resulting location errors.
dc.description.sponsorshipWe are grateful to Tariq Alkhalifah from King Abdullah University of Science and Technology (KAUST) for consulting on PINN eikonal solver. We also appreciate kind support of the King Fahd University of Petroleum and Minerals (KFUPM). Authors have greatly benefited from discussions with Denis Anikiev of GFZ Potsdam.
dc.publisherMDPI AG
dc.relation.urlhttps://www.mdpi.com/2076-3417/11/3/982
dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleMicroseismic Location Error Due to Eikonal Traveltime Calculation
dc.typeArticle
dc.identifier.journalApplied Sciences
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSeismik s.r.o., Kubišova 1265/8, 18200 Praha 8, Czech Republic.
dc.contributor.institutionDepartment of Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 34464, Saudi Arabia.
dc.identifier.volume11
dc.identifier.issue3
dc.identifier.pages982
dc.date.accepted2021-01-19
refterms.dateFOA2021-01-26T13:01:43Z


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This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Except where otherwise noted, this item's license is described as This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.