Zobrazeno 1 - 10 of 62 pro vyhledávání: '"Wansoo Ha"'
1
Akademický článek
Seismic Random Noise Attenuation in the Laplace Domain Using Singular Value Decomposition
Autor: Wansoo Ha, Changsoo Shin
Publikováno v: IEEE Access, Vol 9, Pp 62029-62037 (2021)
We attenuated incoherent seismic noise using singular value decomposition in the Laplace domain. Laplace-domain wavefields are sensitive to small-amplitude noise contaminating the first-arrival signals due to damping in the Laplace transform; this no
Externí odkaz: https://doaj.org/article/2c966291bfa3468c8b615c4f8f77391c
Zobrazit plný text záznamu
2
Sesimic Traveltime Tomography Using Deep Learning
Autor: Jun Hyeon Jo, Wansoo Ha
Seismic inversion methods performed by a deep neural network trained in a supervised learning manner have shown successful inversion performance in synthetic data examples that target small areas. These deep-learning-based seismic inversions use time
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2768e3152ca69a0fe0d1c4df094a284c
https://doi.org/10.5194/egusphere-egu23-1953
Zobrazit plný text záznamu
3
Seismic random noise attenuation in the Laplace domain using deep learning
Autor: Wansoo Ha, Jun Hyeon Jo, Lydie Uwibambe
We attenuated random noise in Laplace-domain seismic wavefields using a modified U-net. Laplace-domain wavefields can be obtained by Laplace-transforming time-domain wavefields. Due to the damping in the Laplace transform, small-amplitude noises near
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71ae10edecdc3c0816c12bfa5df1b1bd
https://doi.org/10.5194/egusphere-egu23-2183
Zobrazit plný text záznamu
5
Deconvolution-Based Objective Functions for Full Waveform Inversion in the Laplace Domain
Autor: Wansoo Ha, Changsoo Shin
Publikováno v: IEEE Transactions on Geoscience and Remote Sensing. 60:1-8
Objective functions are critical for successful seismic fullwaveform inversions (FWIs). Deconvolution-based objective functions yielded promising results in time- and frequency-domain inversions. In this study, we developed two deconvolution-based ob
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4375498b1847ea435947a16973c3c7d5
https://doi.org/10.1109/tgrs.2021.3085512
Zobrazit plný text záznamu
9
Handling Negative Values for the Logarithmic Objective Function in Acoustic Laplace-Domain Full-Waveform Inversion Using Real Variables
Autor: Wansoo Ha, Changsoo Shin
Publikováno v: IEEE Transactions on Geoscience and Remote Sensing. 59:6218-6224
The Laplace-domain waveform inversion is a full-waveform inversion method that recovers large-scale subsurface models. The inversion updates subsurface model parameters to minimize the differences between the modeled and the observed wavefields in th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::156a08d1f200a495c6124f69dcf83331
https://doi.org/10.1109/tgrs.2020.3019510
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje