Single Site Extreme Wave Analysis in the Pacific Ocean Comparing Stationary and Non-stationary GEV Models
F. Calderón-Vega, C. Mösso, A. D. García-Soto, E. Delgadillo-Ruiz
Current Journal of Applied Science and Technology · pp. 1–12 · Published 23 Feb 2019
10.9734/cjast/2019/v32i630038Abstract
The adequate knowledge of the weather behavior is very important for the design and management of socioeconomical, environmental and sustainability human interests in the coasts and oceans. In the present study an extreme value analysis of maximum significant waves recorded at a buoy located in the Pacific Ocean was carried out. The analysis was carried out from two perspectives, by considering a Generalized Extreme Value (GEV) model with stationary distribution (i.e., the time variations are not accounted for), and by considering a non-stationary GEV model, which incorporates the monthly seasonality of maximum observed values in time increments; the maximum significant wave behavior was parameterized using harmonic functions for the distribution measures. Both approaches were compared for a single buoy. In the study a seasonality effect was found, which was also present at the Gulf of Mexico in previous studies, and which cannot be captured by a stationary model.
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