title: Trajectory structures and transport.
abstract: The special problem of transport in two-dimensional divergence-free stochastic velocity fields is studied by developing a statistical approach, the nested subensemble method. The nonlinear process of trapping determined by such fields generates trajectory structures whose statistical characteristics are determined. These structures strongly influence the transport.
authors.affiliation: National Institute of Fusion Science, Toki 509-5292, Japan.
authors.forename: Madalina
authors.initials: M
authors.lastname: Vlad
authors.forename: Florin
authors.initials: F
authors.lastname: Spineanu