A Joint Probabilistic Model for Wave, Wind and Current Parameters using Nataf Transform
Irvin Alberto Mosquera1; Luis Volnei Sagrilo1; Edison Prates de Lima1
1 Universidade Federal do Rio de Janeiro
doi:10.20906/CPS/CILAMCE2015-0119
Resumo
This paper investigates the joint probabilistic modeling of the wave, wind and current metocean parameters using a joint probability model based on Nataf´s transform. The model considers both the intensity and the direction of environmental parameters. Statistical dependence between variables is modeled by means of their correlation coefficient. A procedure is proposed for calculating the equivalent correlation coefficient for the Nataf model when one of the variables is circular. Using a database gathered in a Gulf of Mexico (GoM) location. The accuracy of the model is verified through artificial simulations using a Monte Carlo-based simulation, where the statistical characteristics of the data numerically generated are compared with the original sample data.
Palavras-chave: Joint Probabilistic; Nataf Transform; Circular Statistics