Single super-vortex as a proxy for ocean surface flow fields
<p>Empirical flow field data evaluation in a well-studied ocean region along the US west coast revealed a surprisingly strong relationship between the surface integrals of kinetic energy and enstrophy (squared vorticity). This relationship defines a single isolated Gaussian super-vortex, whose...
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Copernicus Publications
2019-07-01
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| Series: | Ocean Science |
| Online Access: | https://www.ocean-sci.net/15/941/2019/os-15-941-2019.pdf |
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doaj-71776fdd4f9b41d7828829dd094197b82020-11-25T01:55:04ZengCopernicus PublicationsOcean Science1812-07841812-07922019-07-011594194910.5194/os-15-941-2019Single super-vortex as a proxy for ocean surface flow fieldsI. M. Jánosi0I. M. Jánosi1I. M. Jánosi2M. Vincze3M. Vincze4G. Tóth5J. A. C. Gallas6J. A. C. Gallas7J. A. C. Gallas8Department of Physics of Complex Systems, Eötvös Loránd University, Pázmány Péter s. 1/A, 1117 Budapest, HungaryMax Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germanyvon Kármán Laboratory for Environmental Flows, Eötvös Loránd University, Pázmány Péter s. 1/A, 1117 Budapest, Hungaryvon Kármán Laboratory for Environmental Flows, Eötvös Loránd University, Pázmány Péter s. 1/A, 1117 Budapest, HungaryMTA-ELTE Theoretical Physics Research Group, Pázmány Péter s. 1/A, 1117 Budapest, HungaryDepartment of Physics of Complex Systems, Eötvös Loránd University, Pázmány Péter s. 1/A, 1117 Budapest, HungaryMax Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, GermanyComplexity Sciences Center, 9225 Collins Avenue Suite 1208, Surfside, FL 33154, USAInstituto de Altos Estudos da Paraíba, Rua Silvino Lopes 419-2502, 58039-190 João Pessoa, Brazil<p>Empirical flow field data evaluation in a well-studied ocean region along the US west coast revealed a surprisingly strong relationship between the surface integrals of kinetic energy and enstrophy (squared vorticity). This relationship defines a single isolated Gaussian super-vortex, whose fitted size parameter is related to the mean eddy size, and the square of the fitted height parameter is proportional to the sum of the square of all individual eddy amplitudes obtained by standard vortex census. This finding allows very effective coarse-grained eddy statistics with minimal computational efforts. As an illustrative example, the westward drift velocity of eddies is determined from a simple cross-correlation analysis of kinetic energy integrals.</p>https://www.ocean-sci.net/15/941/2019/os-15-941-2019.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
I. M. Jánosi I. M. Jánosi I. M. Jánosi M. Vincze M. Vincze G. Tóth J. A. C. Gallas J. A. C. Gallas J. A. C. Gallas |
| spellingShingle |
I. M. Jánosi I. M. Jánosi I. M. Jánosi M. Vincze M. Vincze G. Tóth J. A. C. Gallas J. A. C. Gallas J. A. C. Gallas Single super-vortex as a proxy for ocean surface flow fields Ocean Science |
| author_facet |
I. M. Jánosi I. M. Jánosi I. M. Jánosi M. Vincze M. Vincze G. Tóth J. A. C. Gallas J. A. C. Gallas J. A. C. Gallas |
| author_sort |
I. M. Jánosi |
| title |
Single super-vortex as a proxy for ocean surface flow fields |
| title_short |
Single super-vortex as a proxy for ocean surface flow fields |
| title_full |
Single super-vortex as a proxy for ocean surface flow fields |
| title_fullStr |
Single super-vortex as a proxy for ocean surface flow fields |
| title_full_unstemmed |
Single super-vortex as a proxy for ocean surface flow fields |
| title_sort |
single super-vortex as a proxy for ocean surface flow fields |
| publisher |
Copernicus Publications |
| series |
Ocean Science |
| issn |
1812-0784 1812-0792 |
| publishDate |
2019-07-01 |
| description |
<p>Empirical flow field data evaluation in a well-studied ocean region along
the US west coast revealed a surprisingly strong
relationship between the surface integrals of kinetic energy and enstrophy (squared vorticity). This
relationship defines a single isolated Gaussian super-vortex, whose fitted size parameter
is related to the mean eddy size, and the square of the fitted height parameter is proportional to the sum of the square of all individual eddy amplitudes obtained by standard vortex census.
This finding allows very effective coarse-grained eddy statistics with minimal computational efforts. As an illustrative example, the westward
drift velocity of eddies is determined from a simple cross-correlation analysis of kinetic energy integrals.</p> |
| url |
https://www.ocean-sci.net/15/941/2019/os-15-941-2019.pdf |
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