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Refractor velocity analysis: a signal processing procedure
Author(s) -
de Franco Roberto
Publication year - 2011
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.2010.00931.x
Subject(s) - data processing , signal processing , seismic interferometry , reciprocal , regional geology , geology , refracting telescope , environmental geology , set (abstract data type) , computer science , geodesy , noise (video) , economic geology , algorithm , seismology , interferometry , optics , digital signal processing , physics , metamorphic petrology , artificial intelligence , linguistics , philosophy , computer hardware , tectonics , programming language , operating system , image (mathematics)
This paper presents a signal processing procedure to perform refractor velocity analysis. The procedure enables one to obtain the seismic velocity from the refracted wavefield without the picking of refracted arrival times. Two processing procedures are derived, one starting from a seismic interferometric approach and another, from the conventional reciprocal method and generalized reciprocal method approaches. The theoretical equivalence of the two approaches is also demonstrated. The proposed processing procedure is applied to synthetic data in order to test the influence of some procedural parameters and its capability to reconstruct a known velocity model starting from refracted signals, without and with perturbations, in arrival times and noise; finally, it is applied to a field data set.