“…Gradient Pattern Analysis (GPA) is a technique for analyzing the dynamics of nonlinear 2D-spatiotemporal systems, which is based on the gradient symmetry-breaking properties of a matrix snapshot sequence. Originally, GPA has found numerous applications in 2D dynamic systems [Rosa et al, 1999, da Silva et al, 2000, Faria et al, 2007Baroni et al, 2006, Freitas et al, 2010. GPA was originally inspired by 2D turbulence analysis in space (Andrade et al, 2006) and environmental physics (Velho et al 2001).…”