Show simple item record

dc.contributor.authorChoi, Yun Seok
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2015-08-04T07:11:55Z
dc.date.available2015-08-04T07:11:55Z
dc.date.issued2013
dc.identifier.citationChoi, Y., & Alkhalifah, T. (2013). Refraction Traveltime Tomography with Irregular Topography Using the Unwrapped Phase Inversion. London 2013, 75th Eage Conference En Exhibition Incorporating SPE Europec. doi:10.3997/2214-4609.20130117
dc.identifier.isbn9781629937915
dc.identifier.doi10.3997/2214-4609.20130117
dc.identifier.urihttp://hdl.handle.net/10754/564675
dc.description.abstractTraveltime tomography has long served as a stable and efficient tool for velocity estimation, especially for the near surface. It, however, suffers from some of limitations associated with ray tracing and high-frequency traveltime in velocity inversion zones and ray shadow regions. We develop a tomographic approach based on traveltime solutions obtained by tracking the phase (instantaneous traveltime) of the wavefield solution of the Helmholtz wave equation. Since the instantaneous-traveltime does not suffer from phase wrapping, the inversion algorithm using the instantaneous-traveltime has the potential to generate robust inversion results. With a high damping factor, the instantaneous-traveltime inversion provides refraction tomography similar results, but from a single frequency. Despite the Helmholtz-based solver implementation, the tomographic inversion handles irrgular topography. The numerical examples show that our inversion algorithm generates a convergent smooth velocity model, which looks very much like a tomographic result. Next, we plan to apply the instantaneous-traveltime inversion algorithm to real seismic data acquired from the near surface with irregular topography.
dc.publisherEAGE Publications
dc.titleRefraction traveltime tomography with irregular topography using the unwrapped phase inversion
dc.typeConference Paper
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.identifier.journalLondon 2013, 75th eage conference en exhibition incorporating SPE Europec
dc.conference.date10 June 2013 through 13 June 2013
dc.conference.name75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers
kaust.personChoi, Yun Seok
kaust.personAlkhalifah, Tariq Ali


This item appears in the following Collection(s)

Show simple item record