Analysis methodology for vortex-induced motion (VIM) of a monocolumn platform applying the Hilbert–Huang Transform Method 1 - Gonçalves, Rodolfo Trentin; Franzini, Guilherme Rosa; Rosetti, Guilherme Feitosa; Fujarra, André Luis Condino; Nishimoto, Kazuo (Journal of Offshore Mechanics and Artic Engineering, 2012)