Crossing sea state and rogue wave probability during the P restige accident

K Trulsen, JC Nieto Borge, O Gramstad… - Journal of …, 2015 - Wiley Online Library
K Trulsen, JC Nieto Borge, O Gramstad, L Aouf, JM Lefèvre
Journal of Geophysical Research: Oceans, 2015Wiley Online Library
We discuss the crossing sea state and the probability of rogue waves during the accident of
the tanker Prestige on 13 November 2002. We present newly computed hindcast spectra for
every hour during that day at nearby locations, showing the development of a bimodal sea
state with two wave systems crossing at nearly right angle. We employ four different
nonlinear models capable of computing the phase‐resolved sea surface from the hindcast
spectra, allowing us to estimate statistics for the occurrence of rogue waves. At the location …
Abstract
We discuss the crossing sea state and the probability of rogue waves during the accident of the tanker Prestige on 13 November 2002. We present newly computed hindcast spectra for every hour during that day at nearby locations, showing the development of a bimodal sea state with two wave systems crossing at nearly right angle. We employ four different nonlinear models capable of computing the phase‐resolved sea surface from the hindcast spectra, allowing us to estimate statistics for the occurrence of rogue waves. At the location and moment of the accident, the models give expected values for the kurtosis κ = 3.0119 ± 0.0078. The models coincide that the maximum crest elevation was about 5–6% larger than the expected maximum crest elevation in a Gaussian sea at the moment of the accident. We also conclude that the possible nonlinear interaction between the two crossing wave systems practically did not modify neither the kurtosis nor the largest crest elevation.
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