Blar i NTNU Open på forfatter "Pedersen, Ørjan"
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Computational and robustness improvements in waveform inversion
Aaker, Ole Edvard (Doctoral theses at NTNU;2022:313, Doctoral thesis, 2022) -
One-way wave-equation migration for wide-angle propagation in anisotropic media
Pedersen, Ørjan (Doktoravhandlinger ved NTNU, 1503-8181; 2010:140, Doctoral thesis, 2010)Seismic depth migration is a major component in the search for hydrocarbons. As new prospects for oil and gas often are found in areas with challenging subsurface structures, more advanced methods to find and evaluate these ... -
Wavefield reconstruction for velocity–stress elastodynamic full-waveform inversion
Aaker, Ole Edvard; Raknes, Espen Birger; Pedersen, Ørjan; Arntsen, Børge (Peer reviewed; Journal article, 2020)Gradient computations in full-waveform inversion (FWI) require calculating zero-lag cross-correlations of two wavefields propagating in opposite temporal directions. Lossless media permit accurate and efficient reconstruction ...