22 citations · 41 across the 5 of their papers we have counts for
4 papers · 1 filter
Vorticity Alignment with Lyapunov Vectors and Rate-of-Strain Eigenvectors
Alex Encinas-Bartos, George Haller
We derive asymptotic estimates for the projection of the vorticity onto principal directions of material stretching in 3D flows. In flows with pointwise bounded vorticity, these es…
Relative Fluid Stretching and Rotation for Sparse Trajectory Observations
Nikolas O. Aksamit, Alex P. Encinas-Bartos, George Haller +1
As most mathematically justifiable Lagrangian coherent structure detection methods rely on spatial derivatives, their applicability to sparse trajectory data has been limited. For…
Quasi-Objective Eddy Visualization from Sparse Drifter Data
Alex P. Encinas Bartos, Nikolas O. Aksamit, George Haller
We employ a recently developed single-trajectory Lagrangian diagnostic tool, the trajectory rotation average , to visualize oceanic vortices (or eddies…
Quasi-Objective Coherent Structure Diagnostics from Single Trajectories
George Haller, Nikolas Aksamit, Alex P. Encinas Bartos
We derive measures of local material stretching and rotation that are computable from individual trajectories without reliance on other trajectories or on an underlying velocity fi…