Zobrazeno 1 - 10 of 33 pro vyhledávání: '"Nanxun Dai"'
1
Deep learning-based point-spread function deconvolution for migration image deblurring
Autor: Cewen Liu, Mengyao Sun, Nanxun Dai, Wei Wu, Yanwen Wei, Mingjie Guo, Haohuan Fu
Publikováno v: GEOPHYSICS. 87:S249-S265
High-resolution seismic imaging is crucial for deriving an accurate geologic section and ensuring successful petroleum exploration. However, traditional high-resolution imaging methods, such as least-squares reverse time migration (LSRTM) and migrati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::497c89b607525f0acb1b392d8df8d8fb
https://doi.org/10.1190/geo2020-0904.1
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2
Viscoacoustic reverse time migration with a robust space-wavenumber domain attenuation compensation operator
Autor: Jidong Yang, Hejun Zhu, Nanxun Dai, Jianping Huang, Zhenchun Li
Publikováno v: GEOPHYSICS. 86:S339-S353
Intrinsic attenuation gives rise to phase dispersion and amplitude loss during seismic wave propagation. Not correcting these effects in seismic imaging can result in inaccurate reflector locations, dimmed amplitudes, and degraded spatial resolution.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2ec37c84bfa59bd033c00eb650c26fa
https://doi.org/10.1190/geo2020-0608.1
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6
An explicit time evolution method for acoustic wave propagation
Autor: Fenglin Niu, Huafeng Liu, Nanxun Dai, Wei Wu
Publikováno v: GEOPHYSICS. 79:T117-T124
Cost-effective waveform modeling is the key to practical reverse time migration (RTM) and full-waveform inversion (FWI) implementations. We evaluated an explicit time evolution (ETE) method to efficiently simulate wave propagation in acoustic media w
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::071b52957f617d6551ea4db132aafb12
https://doi.org/10.1190/geo2013-0073.1
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8
Optimizing Complex Spatially-Variant Coefficient Stencils for Seismic Modeling on GPU
Autor: Wei Wu, Jiarui Fang, Guangwen Yang, Nanxun Dai, Lin Gan, He Zhang, Haohuan Fu
Publikováno v: ICPADS
The Explicit Time Evolution (ETE) method is an innovative Finite-Difference (FD) type method to simulate the wave propagation in acoustic media with higher spatial and temporal accuracy. However, different from FD, it is difficult to achieve an effic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71e1f0775ab49cdfb1f923a08efb292b
https://doi.org/10.1109/icpads.2015.86
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9
Land Data FWI: Methods and Strategies
Autor: Wei Zhang, Nanxun Dai
Publikováno v: Day 1 Mon, November 09, 2015.
There have long been attempts to apply Full Waveform Inversion (FWI) to land data sets because it has the potential to build higher-resolution velocity models compared to traditional ray-based model building techniches. However, several difficulties
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c0a1e4d5ea49a8552aba26a6c2772a1
https://doi.org/10.2118/177571-ms
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10
Dual frequency phase difference objective function and its application in Land data FWI
Autor: Wei Zhang, Nanxun Dai
Publikováno v: SEG Technical Program Expanded Abstracts 2015.
Summary We propose a dual frequency phase difference objective function specially designed for land data FWI. It is constructed by calculating the phase difference between two selected frequencies for both simulated and observed data respectively, th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e334800d6750fc3afecc59f27fb5e185
https://doi.org/10.1190/segam2015-5816588.1
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