Seismic refraction interpretation using finite difference method

Sherif M. Hanafy*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Correct interpretations of seismic refraction profiles are contingent upon accurate processing, especially in problematic sites where hidden layers may be present. It is found that the Generalized Reciprocal Method (GRM), which is used to solve hidden layer problems, does not give accurate results in some areas without additional modification to the processing flow. To improve the final GRMderived velocity-depth (V-D) model, the Finite Difference (FD) method is employed to calculate the first arrival's direct and refracted times for any velocity medium. This newly-developed FD technique is then used to improve the initial GRM-derived V-D model. Three synthetic seismic data sets are used to validate this technique, each processed by GRM-only and FD modified GRM. In each case, the FD modifications are found to provide more accurate results in comparison to those from GRM-only processing flows.

Original languageEnglish (US)
Title of host publication18th Symposium on the Application of Geophysics to Engineering and Environmental Problems, SAGEEP 2005
Subtitle of host publicationGeophysical Solutions for Today's Challenges
Pages1012-1024
Number of pages13
Volume2
StatePublished - 2005
Externally publishedYes
Event18th Symposium on the Application of Geophysics to Engineering and Environmental Problems: Geophysical Solutions for Today's Challenges, SAGEEP 2005 - Atlanta, GA, United States
Duration: Apr 3 2005Apr 7 2005

Other

Other18th Symposium on the Application of Geophysics to Engineering and Environmental Problems: Geophysical Solutions for Today's Challenges, SAGEEP 2005
CountryUnited States
CityAtlanta, GA
Period04/3/0504/7/05

ASJC Scopus subject areas

  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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