Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Linong Liu"'
Seismic profile denoising based on common-reflection-point gathers using convolution neural networks
Publikováno v:
Journal of Geophysics and Engineering. 20:240-254
With the development of seismic surveys and the decline of shallow petroleum resources, high resolution and high signal-to-noise ratio have become more important in seismic processing. To improve the quality of seismic data, stationary-phase migratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5595b78d1a7e67a64ad0cb33bf9fd0b1
https://doi.org/10.1093/jge/gxad008
https://doi.org/10.1093/jge/gxad008
Publikováno v:
Applied Sciences, Vol 10, Iss 7, p 2502 (2020)
The emerging applications of deep learning in solving geophysical problems have attracted increasing attention. In particular, it is of significance to enhance the computational efficiency of the computationally intensive geophysical algorithms. In t
Externí odkaz:
https://doaj.org/article/941cb266e0c943359052889db8a41dbf
Publikováno v:
Journal of Geophysics and Engineering. 18:291-303
We developed a modified topography prestack time migration (PSTM) scheme that can improve the imaging resolution by applying effective Q to topography migration. The computation of the traveltime at each imaging location in the migration is based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f473b962cc520b84d86b9d8c147199ad
https://doi.org/10.1093/jge/gxab014
https://doi.org/10.1093/jge/gxab014
Publikováno v:
Exploration Geophysics. 51:446-455
The wavelet stretch effects in pre-stack migration, which is similar to that of NMO stretch, distort the frequency spectrums and taper the high-frequency components at far offsets. The long-offset ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd4f363900f6c34f3d919403566ef83f
https://doi.org/10.1080/08123985.2019.1706219
https://doi.org/10.1080/08123985.2019.1706219
Publikováno v:
GEOPHYSICS. 85:S21-S32
We have developed a 3D prestack time migration (PSTM) approach that can directly migrate nonplanar data with near-surface-related deabsorption using three effective parameters. The proposed scheme improves the so-called topography PSTM approach by ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9753fb79290e72a5cb096a70d32deda1
https://doi.org/10.1190/geo2019-0259.1
https://doi.org/10.1190/geo2019-0259.1
Publikováno v:
Computers & Geosciences. 111:272-282
De-absorption pre-stack time migration (QPSTM) compensates for the absorption and dispersion of seismic waves by introducing an effective Q parameter, thereby making it an effective tool for 3D, high-resolution imaging of seismic data. Although the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1331aaf63acd38aeef36ca1817ac73d4
https://doi.org/10.1016/j.cageo.2017.11.020
https://doi.org/10.1016/j.cageo.2017.11.020
Publikováno v:
GEOPHYSICS. 81:S317-S331
We have improved the so-called deabsorption prestack time migration (PSTM) by introducing a dip-angle domain stationary-phase implementation. Deabsorption PSTM compensates absorption and dispersion via an actual wave propagation path using effective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee4b5f9c53469259e61324bc292758d
https://doi.org/10.1190/geo2015-0543.1
https://doi.org/10.1190/geo2015-0543.1
Publikováno v:
Applied Sciences
Volume 10
Issue 7
Applied Sciences, Vol 10, Iss 2502, p 2502 (2020)
Volume 10
Issue 7
Applied Sciences, Vol 10, Iss 2502, p 2502 (2020)
The emerging applications of deep learning in solving geophysical problems have attracted increasing attention. In particular, it is of significance to enhance the computational efficiency of the computationally intensive geophysical algorithms. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0ff87c1e8462d0d818b6b3914d5b5db
https://doi.org/10.3390/app10072502
https://doi.org/10.3390/app10072502
Autor:
Jianfeng Zhang, Linong Liu
Publikováno v:
Chinese Journal of Geophysics. 54:844-855
Based on the 3-D dispersion equation for the transversely isotropic media with a vertical symmetry axis (VTI), we proposed one-way operators in the wavenumber-space domain such that the terms that contain spatial coordinates and the terms that contai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::298934d81639f3fae233fe146242c1fb
https://doi.org/10.1002/cjg2.1667
https://doi.org/10.1002/cjg2.1667
Publikováno v:
Chinese Journal of Geophysics. 51:152-159
We propose a frequency-dependent varying-step depth extrapolation scheme and a table-driven, one point wavefield interpolation technique for the wave equation based migration methods. The former reduces the computational cost of wavefield depth extra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b47229fd34be90c0fa02229918e471
https://doi.org/10.1002/cjg2.1204
https://doi.org/10.1002/cjg2.1204