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On tridimensional rip current modeling

delete2015-12-01
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OA
AI
P
Patrick Marchesiello *
R
Rachid Benshila
R
Rafaël Almar
Y
Yusuke Uchiyama
J
James C. McWilliams
A
Alexander F. Shchepetkin
DOI:10.1016/j.ocemod.2015.07.003delete
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Abstract

Abstract

En 中文
Do lateral shear instabilities of nearshore circulation account for a substantial part of Very Low-Frequency (VLF) variability? If yes, it would promote stirring and mixing of coastal waters and surf-shelf exchanges. Another question is whether tridimensional transient processes are important for instability generation. An innovative modeling system with tridimensional wave-current interactions was designed to investigate transient nearshore currents and interactions between nearshore and innershelf circulations. We present here some validation of rip current modeling for the Aquitanian coast of France, using in-situ and remote video sensing. We then proceed to show the benefits of 3D versus 2D (depth-mean flow) modeling of rip currents and their low-frequency variability. It appears that a large part of VLF motions is due to intrinsic variability of the tridimensional flow. 3D models may thus provide a valuable, only marginally more expensive alternative to conventional 2D approaches that miss the vertical flow structure and its nonlinear interaction with the depth-averaged flow. (C) 2015 Published by Elsevier Ltd.
Keywords:
Rip current
Intrinsic variability
Tridimensional modeling
Video imaging
Biscarrosse beach
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Journal

Ocean Modelling cover
Ocean Modelling
IF:
2.9
Papers:
2.2K
Citations:
5.4K

Organization

I
institut de recherche pour le developpement (ird)
Scholars:
1.8W
Papers: 1.3W
Citations: 21
C
centre national de la recherche scientifique (cnrs)
Scholars:
24.5W
Papers: 18.2W
Citations: 279
U
universite toulouse iii - paul sabatier
Scholars:
1.8W
Papers: 1.3W
Citations: 23
U
universite de toulouse
Scholars:
3.5W
Papers: 2.7W
Citations: 37
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Cited Papers

Cited Papers

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High resolution electrospray ionization mass spectrometry and 2D solution NMR for the analysis of DOM extracted by C18 solid phase disk
err2003-09-01
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Open boundary conditions for long-term integration of regional oceanic models
err2001-01-01
err931
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errMarchesiello, Patrick; McWilliams, James C.; Shchepetkin, Alexander
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Rip current instabilities
err2001-06-22
err66
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errHaller, MC; Dalrymple, RA
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Remote Sensing of the Nearshore
err2013-01-03
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errHolman, Rob; Haller, Merrick C.
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Cross-shore tracer exchange between the surfzone and inner-shelf
err2014-07-17
err60
errOAAI
errHally-Rosendahl, Kai; Feddersen, Falk; Guza, R. T.
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Practical use of video imagery in nearshore oceanographic field studies
err1997-01-01
err461
PREAI
errHolland, KT; Holman, RA; Lippmann, TC; Stanley, J; Plant, N
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