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dc.contributor.authorYu, Han
dc.contributor.authorChen, Yuqing
dc.contributor.authorHanafy, Sherif M.
dc.contributor.authorHuang, Jiangping
dc.date.accessioned2018-02-27T09:00:13Z
dc.date.available2018-02-27T09:00:13Z
dc.date.issued2018-02-23
dc.identifier.citationYu H, Chen Y, Hanafy SM, Huang J (2018) Visco-acoustic wave-equation traveltime inversion and its sensitivity to attenuation errors. Journal of Applied Geophysics. Available: http://dx.doi.org/10.1016/j.jappgeo.2018.02.019.
dc.identifier.issn0926-9851
dc.identifier.doi10.1016/j.jappgeo.2018.02.019
dc.identifier.urihttp://hdl.handle.net/10754/627210
dc.description.abstractA visco-acoustic wave-equation traveltime inversion method is presented that inverts for the shallow subsurface velocity distribution. Similar to the classical wave equation traveltime inversion, this method finds the velocity model that minimizes the squared sum of the traveltime residuals. Even though, wave-equation traveltime inversion can partly avoid the cycle skipping problem, a good initial velocity model is required for the inversion to converge to a reasonable tomogram with different attenuation profiles. When Q model is far away from the real model, the final tomogram is very sensitive to the starting velocity model. Nevertheless, a minor or moderate perturbation of the Q model from the true one does not strongly affect the inversion if the low wavenumber information of the initial velocity model is mostly correct. These claims are validated with numerical tests on both the synthetic and field data sets.
dc.description.sponsorshipWe would like to thank the 2017 sponsors of the CSIM Consortium (http://csim.kaust.edu.sa/web/) for their support. The research reported in this paper was also supported by the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. We are grateful to the sponsors of the Center for Subsurface Imaging and Modeling Consortium for their financial support. For computer time, this research used the resources of the Supercomputing Laboratory at KAUST and the IT Research Computing Group. We thank them for providing the computational resources for carrying out this work. The authors are also grateful for the professional comments from Prof. Gerard T. Schuster (KAUST), Gaurav Dutta (CGG, Houston), and other anonymous CSIM members. We are grateful for the financial support of National Natural Science Foundation of China (grants: 11501302, 61571233 and 91646116), the China Postdoctoral Science Foundation Funded Project (grant: 2017M611883).
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0926985117305797
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Applied Geophysics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Applied Geophysics, 22 February 2018. DOI: 10.1016/j.jappgeo.2018.02.019. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectVisco-acoustic
dc.subjectWave equation
dc.subjectAttenuation
dc.subjectInversion
dc.titleVisco-acoustic wave-equation traveltime inversion and its sensitivity to attenuation errors
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentEarth Science and Engineering Program
dc.identifier.journalJournal of Applied Geophysics
dc.eprint.versionPost-print
dc.contributor.institutionNanjing University of Posts and Telecommunications, School of Computer Science, Jiangsu Key Laboratory of Big Data Security and Intelligent Processing, Nanjing 210023, China
dc.contributor.institutionSchool of Geosciences, China University of Petroleum, Qingdao 266580, China
kaust.personYu, Han
kaust.personChen, Yuqing
kaust.personHanafy, Sherif M.


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