Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Lorie K. Bear"'
Publikováno v:
GEOPHYSICS. 73:VE35-VE38
We have developed a new method to build seismic velocity models for complex structures. In our approach, we use a spatially nonuniform parameterization of the velocity model in tomography and a uniform grid representation of the same velocity model i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a26074e5b10537806931e887e52ef23
https://doi.org/10.1190/1.2963496
https://doi.org/10.1190/1.2963496
Publikováno v:
The Leading Edge. 24:622-634
There are many geologic settings where anisotropic migration is necessary to obtain accurate seismic images. While this is well known, stable anisotropic parameter estimation has posed a serious challenge. Seismic data, though extensive in coverage,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d8f5c04e348ce726aaa64b4f9dbeceb
https://doi.org/10.1190/1.1946219
https://doi.org/10.1190/1.1946219
Autor:
Gary L. Pavlis, Lorie K. Bear
Publikováno v:
Bulletin of the Seismological Society of America. 89:681-692
We describe a new multi-channel procedure for estimating arrival time residuals from seismic array data. It incorporates aspects of three traditional array processing methods: frequency-domain beamforming, time-domain beamforming, and principal-compo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4640919a5145aec5854ebcc02456df42
https://doi.org/10.1785/bssa0890030681
https://doi.org/10.1785/bssa0890030681
Publikováno v:
Bulletin of the Seismological Society of America. 89:693-705
We develop and apply a new technique to determine array-averaged particle motions from three-component seismic array data. The method is based on multi-wavelets, which are an extension of multi-taper spectral methods, and is a hybrid of Fourier and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a091aca16619ac79d394730c14db1dd2
https://doi.org/10.1785/bssa0890030693
https://doi.org/10.1785/bssa0890030693
Autor:
Gary L. Pavlis, Lorie K. Bear
Publikováno v:
Bulletin of the Seismological Society of America. 87:755-769
We have developed a new seismic array data processing method to produce slowness vector estimates and an objective measure of their uncertainties in the form of statistical confidence intervals. The slowness vector, which is typically transformed int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8cc879bc9bd5a218817ed9e308474ff
https://doi.org/10.1785/bssa0870030755
https://doi.org/10.1785/bssa0870030755
Publikováno v:
SEG Technical Program Expanded Abstracts 2011.
Summary We developed a seismic-attenuation-tomography algorithm for improving image amplitude fidelity and other geophysical applications. This algorithm is based upon the centroid-frequency-shift method. However, compared with the conventional centr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb7b7c9424f21a258af36c1d84af3e25
https://doi.org/10.1190/1.3627760
https://doi.org/10.1190/1.3627760
Publikováno v:
SEG Technical Program Expanded Abstracts 2010.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acf35d1885a732fb6a51d7d3ab9d5baf
https://doi.org/10.1190/1.3513522
https://doi.org/10.1190/1.3513522
Publikováno v:
SEG Technical Program Expanded Abstracts 2008.
When imaging geologic structures below an overburden with laterally varying attenuation (Q) properties, it is important to account for the variable amplitude dimming, frequency loss, and phase distortion. Migration algorithms based on the viscoaousti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86510d971dd61919d5476f05c59b9b79
https://doi.org/10.1190/1.3059324
https://doi.org/10.1190/1.3059324
Autor:
Lev Nayvelt, Lorie K. Bear
Publikováno v:
SEG Technical Program Expanded Abstracts 2008.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1836da13fecd598cd3cd596fce5ff8f
https://doi.org/10.1190/1.3064099
https://doi.org/10.1190/1.3064099
Publikováno v:
SEG Technical Program Expanded Abstracts 2007.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81f0592a9bd6c19d4b755467182c4a5a
https://doi.org/10.1190/1.2792579
https://doi.org/10.1190/1.2792579