Imperial College London
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ProfessorMartinRasmussen

Faculty of Natural Sciences, Department of Mathematics

Professor of Mathematics
 
 
 
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Contact

 

+44 (0)20 7594 2774m.rasmussen Website

 
 
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Location

 

637Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ndour:2021:10.3390/fluids6020049,
author = {Ndour, M and Padberg-Gehle, K and Rasmussen, M},
doi = {10.3390/fluids6020049},
journal = {Fluids},
pages = {49--49},
title = {Spectral early-warning signals for sudden changes in time-dependent flow patterns},
url = {http://dx.doi.org/10.3390/fluids6020049},
volume = {6},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Lagrangian coherent sets are known to crucially determine transport and mixing processes in non-autonomous flows. Prominent examples include vortices and jets in geophysical fluid flows. Coherent sets can be identified computationally by a probabilistic transfer-operator-based approach within a set-oriented numerical framework. Here, we study sudden changes in flow patterns that correspond to bifurcations of coherent sets. Significant changes in the spectral properties of a numerical transfer operator are heuristically related to critical events in the phase space of a time-dependent system. The transfer operator approach is applied to different example systems of increasing complexity. In particular, we study the 2002 splitting event of the Antarctic polar vortex.
AU  - Ndour,M
AU  - Padberg-Gehle,K
AU  - Rasmussen,M
DO  - 10.3390/fluids6020049
EP  - 49
PY  - 2021///
SN  - 2311-5521
SP  - 49
TI  - Spectral early-warning signals for sudden changes in time-dependent flow patterns
T2  - Fluids
UR  - http://dx.doi.org/10.3390/fluids6020049
UR  - https://www.mdpi.com/2311-5521/6/2/49
UR  - http://hdl.handle.net/10044/1/87261
VL  - 6
ER  -
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