FN Archimer Export Format PT J TI Assessing the turbulent kinetic energy budget in an energetic tidal flow from measurements of coupled ADCPs BT AF THIEBAUT, Maxime FILIPOT, Jean-Francois MAISONDIEU, Christophe DAMBLANS, Guillaume DUARTE, Rui DRONIOU, Eloi GUILLOU, Sylvain AS 1:1;2:1;3:2;4:1;5:1;6:3;7:4; FF 1:;2:;3:PDG-REM-RDT-LCSM;4:;5:;6:;7:; C1 France Énergies Marines, Technopôle Brest-Iroise, 525 Avenue Alexis de Rochon, 29280 Plouzané, France IFREMER, ZI Pointe du diable, 29280 Plouzané, France DynamOcean SARL, 57 rue de Metz, 56000 Vannes, France Normandie Univ, UNICAEN, LUSAC, EA4253, site universitaire de Cherbourg, rue Louis Aragon, BP 78, 50130, Cherbourg-Octeville France C2 FRANCE ENERGIES MARINES, FRANCE IFREMER, FRANCE DYNAMOCEAN SARL, FRANCE UNIV NORMANDIE, FRANCE SI BREST SE PDG-REM-RDT-LCSM IN WOS Ifremer UPR copubli-france copubli-univ-france IF 1.493 TC 20 UR https://archimer.ifremer.fr/doc/00642/75432/76255.pdf LA English DT Article CR HYD2M DE ;turbulence;Reynolds stresses;coupled ADCPs;Alderney Race AB Two coupled four-beam acoustic Doppler current profilers were used to provide simultaneous and independent measurements of the turbulent kinetic energy (TKE) dissipation rate ε and the TKE production rate P over a 36 h long period at a highly energetic tidal energy site in the Alderney Race. The eight-beam arrangement enabled the evaluation of the six components of the Reynolds stress tensor which allows for an improved estimation of the TKE production rate. Depth-time series of ε, P and the Reynolds stresses are provided. The comparison between ε and P was performed by calculating individual ratios of ε corresponding to P. The depth-averaged ratio ε/P averaged over whole flood and ebb tide were found to be 2.2 and 2.8 respectively, indicating that TKE dissipation exceeds TKE production. It is shown that the term of diffusive transport of TKE is significant. As a result, non-local transport is important to the TKE budget and the common assumption of a local balance, i.e. a balance between production and dissipation, is not valid at the measurement site. PY 2020 PD AUG SO Philosophical Transactions Of The Royal Society A-mathematical Physical And Engineering Sciences SN 1364-503X PU Royal Society of London VL 378 IS 2178 UT 000556600000007 DI 10.1098/rsta.2019.0496 ID 75432 ER EF