Author/Authors :
Assireu، نويسنده , , A.T. and Rosa، نويسنده , , R.R. and Vijaykumar، نويسنده , , N.L. and Lorenzzetti، نويسنده , , J.A. and Rempel، نويسنده , , E.L. and Ramos، نويسنده , , F.M. and Abreu Sل، نويسنده , , L.D. and Bolzan، نويسنده , , M.J.A. and Zanandrea، نويسنده , , A.، نويسنده ,
Abstract :
Based on the gradient pattern analysis (GPA) technique we introduce a new methodology for analyzing short nonstationary time series. Using the asymmetric amplitude fragmentation (AAF) operator from GPA we analyze Lagrangian data observed as velocity time series for ocean flow. The results show that quasi-periodic, chaotic and turbulent regimes can be well characterized by means of this new geometrical approach.
Keywords :
Turbulence , Nonstationary time series analysis , nonlinear phenomena , Gradient pattern analysis
