TY - JOUR T1 - On the shape and likelihood of oceanic rogue waves A1 - Benetazzo,Alvise A1 - Ardhuin,Fabrice A1 - Bergamasco,Filippo A1 - Cavaleri,Luigi A1 - Guimaraes,Pedro Veras A1 - Schwendeman,Michael A1 - Sclavo,Mauro A1 - Thomson,Jim A1 - Torsello,Andrea AD - Italian Natl Res Council ISMAR CNR, Inst Marine Sci, I-30122 Venice, Italy. AD - Univ Brest, IFREMER, CNRS, IRD,Lab Oceanog Phys & Spatiale LOPS,IUEM, Plouzane, France. AD - DAIS Univ Ca Foscari, Venice, Italy. AD - Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA. AD - Ecole Cent Nantes, LHEEA Lab, UMR6598, Nantes, France. UR - https://archimer.ifremer.fr/doc/00398/50947/ DO - 10.1038/s41598-017-07704-9 N2 - We consider the observation and analysis of oceanic rogue waves collected within spatio-temporal (ST) records of 3D wave fields. This class of records, allowing a sea surface region to be retrieved, is appropriate for the observation of rogue waves, which come up as a random phenomenon that can occur at any time and location of the sea surface. To verify this aspect, we used three stereo wave imaging systems to gather ST records of the sea surface elevation, which were collected in different sea conditions. The wave with the ST maximum elevation (happening to be larger than the rogue threshold 1.25Hs) was then isolated within each record, along with its temporal profile. The rogue waves show similar profiles, in agreement with the theory of extreme wave groups. We analyze the rogue wave probability of occurrence, also in the context of ST extreme value distributions, and we conclude that rogue waves are more likely than previously reported; the key point is coming across them, in space as well as in time. The dependence of the rogue wave profile and likelihood on the sea state conditions is also investigated. Results may prove useful in predicting extreme wave occurrence probability and strength during oceanic storms. Y1 - 2017/08 PB - Nature Publishing Group JF - Scientific Reports SN - 2045-2322 VL - 7 IS - 8276 SP - 1 EP - 11 ID - 50947 ER -