Student Posters Repository

Coherent patterns are frequently observed in oceanic currents, planetary atmospheres, and many other natural contexts. Coherent patterns are considered Lagrangian if they are defined from the bulk motion of a fluid parcel. Studying Lagrangian motion enables the discovery of important transport properties of fluid flows and extracting coherent patterns reveals the robust material surfaces behind complex dynamics. Our framework for extracting coherent patterns is to study the spectra of Koopman operators acting on observables of the system. We modeled time-dependent double gyre and the idealized stratospheric flow using this framework.