TITLE
	Anomalous transport in two-dimensional flows
	
AUTHOR
	Xavier LEONCINI

ABSTRACT 
	Transport properties of passive particles evolving in two dimensional flows 
	are investigated. Flows governed by point vortices and by the Charney-Hasegawa-Mima 
	equation are considered. Transport is found to be anomalous with a non linear 
	evolution of the second moments with time and for all considered cases the 
	characteristic exponent is found to be close to $1.75$. The origin of this behavior 
	is traced back to the existence of chaotic jets in these systems.