Zobrazeno 1 - 10
of 40
pro vyhledávání: '"A. J. W. Duijndam"'
Publikováno v:
Magnetic Resonance in Medicine. 65:96-107
In this work, a new two-point method for water–fat imaging is described and explored. It generalizes existing two-point methods by eliminating some of the restrictions that these methods impose on the choice of echo times. Thus, the new two-point m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9be28040351a4346195b9970c7ebd782
https://doi.org/10.1002/mrm.22578
https://doi.org/10.1002/mrm.22578
Publikováno v:
GEOPHYSICS. 68:2092-2105
Seismic data are usually irregularly and sparsely sampled along the spatial coordinates, which yields suboptimal imaging results. For time‐lapse data, differences in the spatial sampling of base and monitor surveys lead to undesired differences bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6f19f197943d0af879fb85003536e0d
https://doi.org/10.1190/1.1635063
https://doi.org/10.1190/1.1635063
Publikováno v:
GEOPHYSICS. 68:1303-1309
Seismic reservoir monitoring has become an important tool in the management of many fields. Monitoring subtle changes in the seismic properties of a reservoir caused by production places strong demands on seismic repeatability. A lack of repeatabilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff49910392f92485719bf4c08debb841
https://doi.org/10.1190/1.1598123
https://doi.org/10.1190/1.1598123
Autor:
Michel Schonewille, A. J. W. Duijndam
Publikováno v:
GEOPHYSICS. 66:667-678
A good choice of the sampling in the transform domain is essential for a successful application of the parabolic Radon transform. The parabolic Radon transform is computed for each temporal frequency and is essentially equivalent to the nonuniform Fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e40c56656a2c3fbde1c74d9bbe6ffae
https://doi.org/10.1190/1.1444957
https://doi.org/10.1190/1.1444957
Autor:
Kees O. H. Hindriks, A. J. W. Duijndam
Publikováno v:
GEOPHYSICS. 65:253-263
Seismic signals are often irregularly sampled along spatial coordinates, leading to suboptimal processing and imaging results. Least‐squares estimation of Fourier components is used for the reconstruction of band‐limited seismic signals that are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5b7a7e4fdffe5c5f7683da92e77bb67
https://doi.org/10.1190/1.1444716
https://doi.org/10.1190/1.1444716
Publikováno v:
GEOPHYSICS. 64:1603-1607
Ultrasonic experiments on a dry Colton sandstone placed in a triaxial pressure machine show that effective stress changes lead to distinct anisotropic velocity changes in compressional waves and shear waves. The stress imprint can be recognized from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87c7e4fcc010040311d2c3df9d02c22a
https://doi.org/10.1190/1.1444664
https://doi.org/10.1190/1.1444664
Publikováno v:
GEOPHYSICS. 64:524-538
Seismic signals are often irregularly sampled along spatial coordinates, leading to suboptimal processing and imaging results. Least squares estimation of Fourier components is used for the reconstruction of band‐limited seismic signals that are ir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78ef814f13a159a6275b5c363e9ca741
https://doi.org/10.1190/1.1444559
https://doi.org/10.1190/1.1444559
Autor:
Michel Schonewille, A. J. W. Duijndam
Publikováno v:
GEOPHYSICS. 64:539-551
The nonuniform discrete Fourier transform (NDFT) can be computed with a fast algorithm, referred to as the nonuniform fast Fourier transform (NFFT). In L dimensions, the NFFT requires O(N(-lne)L+(∏𝓁=1LM𝓁)∑𝓁=1LlogM𝓁) operations, where
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72e2e3c918bf9874b8684ee6abba8b67
https://doi.org/10.1190/1.1444560
https://doi.org/10.1190/1.1444560
Publikováno v:
Nonuniform Sampling ISBN: 9781461354512
The aim of exploration seismology is to obtain an image of the subsurface by probing it with seismic waves. These waves are generated at the surface, by using a suitably powerful source, at various locations. The waves propagate downwards through the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a634d2a16db785638a3e7beb37d33171
https://doi.org/10.1007/978-1-4615-1229-5_11
https://doi.org/10.1007/978-1-4615-1229-5_11
Autor:
P. M. Zwartjes, A. J. W. Duijndam
Publikováno v:
SEG Technical Program Expanded Abstracts 2000.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff99330db1a7830050f0077ff417c38b
https://doi.org/10.1190/1.1815878
https://doi.org/10.1190/1.1815878