H
Harald E. Krogstad
Researcher at Norwegian University of Science and Technology
Publications - 92
Citations - 3252
Harald E. Krogstad is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Wind wave & Synthetic aperture radar. The author has an hindex of 24, co-authored 92 publications receiving 2950 citations. Previous affiliations of Harald E. Krogstad include SINTEF & Norwegian Institute of Technology.
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Oceanic Rogue Waves
TL;DR: In most circumstances, the properties of rogue waves and their probability of occurrence appear to be consistent with second-order random-wave theory as mentioned in this paper, although it is unclear whether these represent measurement errors or statistical flukes, or are caused by physical mechanisms not covered by the model.
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Maximum Entropy Estimation of the Directional Distribution in Ocean Wave Spectra
Asle Lygre,Harald E. Krogstad +1 more
TL;DR: In this article, a general maximum entropy estimate for the directional distribution of the directional wave spectrum is introduced, which appears to be superior to conventional methods, including maximum likelihood methods, when applied to data from a heave/pitch/roll buoy.
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Probability distributions of surface gravity waves during spectral changes
TL;DR: In this paper, the authors performed simulations with a fairly narrow band numerical gravity wave model (higher-order NLS type) and a computational domain of dimensions 128 x 128 typical wavelengths, and found that the probability distributions of surface elevation and crest height are found to fit theoretical distributions found by Tayfun (J. Geophys. Res. vol.
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Evolution of a narrow-band spectrum of random surface gravity waves
TL;DR: In this article, numerical simulations of the evolution of gravity wave spectra of fairly narrowbandwidth have been performed both for two and three dimensions using the nonlinear Schr¨odinger (NLS) equation approximately verify the stabilitycriteria of Alber (1978) in the two-dimensional but not in the three-dimensional case.
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A Simple Derivation of Hasselmann's Nonlinear Ocean-Synthetic Aperture Radar Transform
TL;DR: In this paper, a simple derivation of Hasselmann's nonlinear spectral transform for the synthetic aperture radar imaging of ocean wave fields is presented, and some of its implications are discussed.