Increasing the resolution of semblance-based velocity spectra, or
semblance spectra, is useful for estimating normal moveout velocities,
as increased resolution can help to distinguish peaks in the spectra.
The resolution of semblance spectra depends on the sensitivity of
semblance to changes in velocity. By weighting terms in the semblance
calculation that are more sensitive to changes in velocity, we can
increase resolution. Our implementation of weighted semblance is
a straightforward extension of conventional semblance. Somewhat surprisingly,
we increase resolution by choosing an offset-dependent weighting
function that minimizes semblance. We test our method on synthetic
and field data, and our tests confirm that weighted semblance provides
higher resolution than conventional semblance.
%0 Journal Article
%1 luo_hale:2012
%A Luo, Simon
%A Hale, Dave
%D 2012
%I Society of Exploration Geophysicists
%J Geophysics
%K geophysics seismics
%N 2
%P U15--U22
%R 10.1190/geo2011-0034.1
%T Velocity analysis using weighted semblance
%U http://dx.doi.org/10.1190/geo2011-0034.1
%V 77
%X Increasing the resolution of semblance-based velocity spectra, or
semblance spectra, is useful for estimating normal moveout velocities,
as increased resolution can help to distinguish peaks in the spectra.
The resolution of semblance spectra depends on the sensitivity of
semblance to changes in velocity. By weighting terms in the semblance
calculation that are more sensitive to changes in velocity, we can
increase resolution. Our implementation of weighted semblance is
a straightforward extension of conventional semblance. Somewhat surprisingly,
we increase resolution by choosing an offset-dependent weighting
function that minimizes semblance. We test our method on synthetic
and field data, and our tests confirm that weighted semblance provides
higher resolution than conventional semblance.
@article{luo_hale:2012,
abstract = {Increasing the resolution of semblance-based velocity spectra, or
semblance spectra, is useful for estimating normal moveout velocities,
as increased resolution can help to distinguish peaks in the spectra.
The resolution of semblance spectra depends on the sensitivity of
semblance to changes in velocity. By weighting terms in the semblance
calculation that are more sensitive to changes in velocity, we can
increase resolution. Our implementation of weighted semblance is
a straightforward extension of conventional semblance. Somewhat surprisingly,
we increase resolution by choosing an offset-dependent weighting
function that minimizes semblance. We test our method on synthetic
and field data, and our tests confirm that weighted semblance provides
higher resolution than conventional semblance.},
added-at = {2012-09-01T13:08:21.000+0200},
author = {Luo, Simon and Hale, Dave},
biburl = {https://www.bibsonomy.org/bibtex/2698d12caeb2847ecf62934d4cd539497/nilsma},
day = 01,
doi = {10.1190/geo2011-0034.1},
interhash = {25d1bda8f0cb7595e8e8cca9d17e2676},
intrahash = {698d12caeb2847ecf62934d4cd539497},
issn = {1942-2156},
journal = {Geophysics},
keywords = {geophysics seismics},
month = mar,
number = 2,
pages = {U15--U22},
publisher = {Society of Exploration Geophysicists},
timestamp = {2021-02-09T13:26:58.000+0100},
title = {Velocity analysis using weighted semblance},
url = {http://dx.doi.org/10.1190/geo2011-0034.1},
volume = 77,
year = 2012
}