Parsimonious Refraction Interferometry and Tomography

Handle URI:
http://hdl.handle.net/10754/622966
Title:
Parsimonious Refraction Interferometry and Tomography
Authors:
Hanafy, Sherif; Schuster, Gerard T. ( 0000-0001-7532-1587 )
Abstract:
We present parsimonious refraction interferometry and tomography where a densely populated refraction data set can be obtained from two reciprocal and several infill shot gathers. The assumptions are that the refraction arrivals are head waves, and a pair of reciprocal shot gathers and several infill shot gathers are recorded over the line of interest. Refraction traveltimes from these shot gathers are picked and spawned into O(N2) virtual refraction traveltimes generated by N virtual sources, where N is the number of geophones in the 2D survey. The virtual traveltimes can be inverted to give the velocity tomogram. This enormous increase in the number of traveltime picks and associated rays, compared to the many fewer traveltimes from the reciprocal and infill shot gathers, allows for increased model resolution and a better condition number with the system of normal equations. A significant benefit is that the parsimonious survey and the associated traveltime picking is far less time consuming than that for a standard refraction survey with a dense distribution of sources.
KAUST Department:
Earth Science and Engineering Program
Citation:
Hanafy S, Schuster GT (2017) Parsimonious Refraction Interferometry and Tomography. Geophysical Journal International. Available: http://dx.doi.org/10.1093/gji/ggx042.
Publisher:
Oxford University Press (OUP)
Journal:
Geophysical Journal International
Issue Date:
4-Feb-2017
DOI:
10.1093/gji/ggx042
Type:
Article
ISSN:
0956-540X; 1365-246X
Additional Links:
https://academic.oup.com/gji/article/2968008/Parsimonious
Appears in Collections:
Articles; Earth Science and Engineering Program; Center for Subsurface Imaging and Fluid Modeling (CSIM)

Full metadata record

DC FieldValue Language
dc.contributor.authorHanafy, Sherifen
dc.contributor.authorSchuster, Gerard T.en
dc.date.accessioned2017-03-06T11:13:35Z-
dc.date.available2017-03-06T11:13:35Z-
dc.date.issued2017-02-04en
dc.identifier.citationHanafy S, Schuster GT (2017) Parsimonious Refraction Interferometry and Tomography. Geophysical Journal International. Available: http://dx.doi.org/10.1093/gji/ggx042.en
dc.identifier.issn0956-540Xen
dc.identifier.issn1365-246Xen
dc.identifier.doi10.1093/gji/ggx042en
dc.identifier.urihttp://hdl.handle.net/10754/622966-
dc.description.abstractWe present parsimonious refraction interferometry and tomography where a densely populated refraction data set can be obtained from two reciprocal and several infill shot gathers. The assumptions are that the refraction arrivals are head waves, and a pair of reciprocal shot gathers and several infill shot gathers are recorded over the line of interest. Refraction traveltimes from these shot gathers are picked and spawned into O(N2) virtual refraction traveltimes generated by N virtual sources, where N is the number of geophones in the 2D survey. The virtual traveltimes can be inverted to give the velocity tomogram. This enormous increase in the number of traveltime picks and associated rays, compared to the many fewer traveltimes from the reciprocal and infill shot gathers, allows for increased model resolution and a better condition number with the system of normal equations. A significant benefit is that the parsimonious survey and the associated traveltime picking is far less time consuming than that for a standard refraction survey with a dense distribution of sources.en
dc.publisherOxford University Press (OUP)en
dc.relation.urlhttps://academic.oup.com/gji/article/2968008/Parsimoniousen
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record is available online at: https://academic.oup.com/gji/article/2968008/Parsimonious.en
dc.titleParsimonious Refraction Interferometry and Tomographyen
dc.typeArticleen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalGeophysical Journal Internationalen
dc.eprint.versionPost-printen
dc.contributor.institutionGeophysics Department, Faculty of Science, Cairo University, Egypten
kaust.authorHanafy, Sherifen
kaust.authorSchuster, Gerard T.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.