Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
The Lagrangian description of aperiodic flows: a case study of the Kuroshio Current.
Year:2012
Research Areas
  • Physics chemical and mathematical,
  • Oceanography
Information
Abstract
This article reviews several recently developed Lagrangian tools and shows how their com- bined use succeeds in obtaining a detailed description of purely advective transport events in general aperiodic flows. In particular, because of the climate impact of ocean transport processes, we illustrate a 2D application on altimeter data sets over the area of the Kuroshio Current, although the proposed techniques are general and applicable to arbitrary time depen- dent aperiodic flows. The first challenge for describing transport in aperiodical time dependent flows is obtaining a representation of the phase portrait where the most relevant dynamical features may be identified. This representation is accomplished by using global Lagrangian descriptors that when applied for instance to the altimeter data sets retrieve over the ocean surface a phase portrait where the geometry of interconnected dynamical systems is visible. The phase portrait picture is essential because it evinces which transport routes are acting on the whole flow. Once these routes are roughly recognised it is possible to complete a detailed description by the direct computation of the finite time stable and unstable manifolds of special hyperbolic trajectories that act as organising centres of the flow.
International
Si
JCR
Si
Title
Nonlinear Processes in Geophysics
ISBN
1023-5809
Impact factor JCR
1,597
Impact info
Volume
19
Journal number
From page
449
To page
472
Month
SIN MES
Ranking
Participants
  • Autor: Carolina Andrea Mendoza Parra (UPM)
  • Autor: Ana María Mancho (CSIC)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ciencias Aplicadas a la Ingeniería Naval
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)