FN Archimer Export Format
PT J
TI In situ estimates of submesoscale horizontal eddy diffusivity across an ocean front
BT 
AF NENCIOLI, Francesco
   D'OVIDIO, Francesco
   DOGLIOLI, Andrea
   PETRENKO, Anne
AS 1:1,2;2:3,4;3:1,2;4:1,2;
FF 1:;2:;3:;4:;
C1 Aix Marseille Univ, CNRS INSU, IRD, MIO,UM 110, FR-13288 Marseille 09, France.
   Univ Toulon & Var, CNRS INSU, IRD, MIO,UM 110, La Garde, France.
   Univ Paris 06, Sorbonne Univ, UMR 7159, LOCEAN IPSL, Paris, France.
   LOCEAN IPSL, CNRS, UMR 7159, Paris, France.
C2 UNIV AIX MARSEILLE, FRANCE
   UNIV TOULON, FRANCE
   IPSL, FRANCE
   CNRS, FRANCE
SI AUTRE
SE AUTRE
TC 17
TU Aix-Marseille université
   Centre national d'études spatiales
   Centre national de la recherche scientifique
   Commissariat à l'énergie atomique et aux énergies alternatives
   ELECTRICITE DE FRANCE
   Institut de recherche pour le développement
   Muséum national d'histoire naturelle
   Observatoire de Paris
   Université Paris Diderot
   Université Paris-Est Créteil Val-de-Marne
   Université Paris-Sud
   Université Pierre et Marie Curie
   Université de Cergy-Pontoise
   Université de Versailles Saint-Quentin-en-Yvelines
   Université du Sud Toulon - Var
   École nationale des ponts et chaussées
   École normale supérieure de Paris
   École polytechnique
   École pratique des hautes études
UR https://archimer.ifremer.fr/doc/00185/29654/28032.pdf
LA English
DT Article
CR LATEX 2010
   LATEX10
BO Le Suroît
   Téthys II
DE ;submesoscale front;horizontal eddy diffusivity;Gulf of Lion
AB In the last decade, the rapid advancements in computational power have favored the development of high-resolution numerical models capable of directly resolving small-scale structures such as fronts and filaments. Such models have greatly improved our understanding of submesoscale dynamics. At the same time, the small dimensions and short duration of these structures still pose major challenges for small-scale dedicated field experiments. For this reason, submesoscale studies from in situ observations are still relatively scarce and quantitative estimates of key physical parameters for high-resolution numerical models, such as horizontal eddy diffusivity, are still lacking. This study presents a novel approach for computing in situ horizontal eddy diffusivity associated with frontal structures by combining cross-front widths derived from surface thermosalinograph sections with stirring rates estimated from Lagrangian drifter trajectories. The method is applied to the measurements collected across a frontal structure observed in the western part of the Gulf of Lion during the Latex10 campaign (LAgrangian Transport EXperiment, 1-24 September 2010). A total of 76 estimates of eddy diffusivity were obtained for strain rates of 0.70 and 1.21 day(-1) and front widths (horizontal scales) ranging between 1 and 4 km. The estimates are log-normally distributed, with 70% of the values ranging between 0.4 and 5 m(2) s(-1). Further analysis based on high-resolution simulations and remote sensed observations, as well as dedicated field experiments will help to assess the robustness of some of the assumptions at the base of the proposed approach, and to extend the results to different ocean regions.
PY 2013
PD DEC
SO Journal Of Geophysical Research-oceans
SN 0148-0027
PU Amer Geophysical Union
VL 118
IS 12
UT 000329926200049
BP 7066
EP 7080
DI 10.1002/2013JC009252
ID 29654
ER

EF