Martech 2009 Third Marine Technology Workshop, 19-20 november 2009, Vilanova i la Geltrú, BarcelonaPeer Reviewe

Artigas, Mireia L.

Berdalet, Elisa

Piera, Jaume

Quesada, R.

X Congreso Nacional de Sedimentología del Grupo Español de Sedimentología (GES), celebrado del 26 al 30 de septiembre de 1983 en Menorca.-- 5 pages, 4 figures, 1 tablePeer Reviewe

Díaz, José Ignacio

Maldonado, Andrés

Digital.CSIC

Sedimentos y procesos sedimentarios en el margen continental distal balear durante el Cuaternario

Martech 2009 Third Marine Technology Workshop, 19-20 november 2009, Vilanova i la Geltrú, Barcelona.-- 1 page, 2 figuresThe length scale and the spatio-temporal variation of turbulence intensity has relevant implications on phytoplankton dynamics. Thus, it is important to estimate the relevant parameters that characterize the turbulence in the water column, such as epsilon (kinetic energy dissipation rates). One of the main objectives in this work is the characterization of the physical dynamics at scales relevant to the biology. Here we show different approaches to estimate the epsilon in the Alfacs Bay (Ebre Delta), where recurrent harmful algal bloom events occur. First, we applied the solid boundary layer theory wind velocities obtained by a nearby meteorological station. Secondly, the gradient temperature microstructure method, based on the Batchelor spectrum adjustment was applied on temperature data obtained by a Self-Contained Autonomous MicroProfiler (SCAMP). These two approaches have methodological restrictions, i.e. isotropic turbulent or the process applied to do the Batchelor spectrum fitting. A new method to characterize the turbulence is proposed. The velocity fields measured by a deployed high resolution 2 MHz acoustic Doppler current profiler were processed using the Reynolds decomposition to obtain an empirical parameter which provides us the information about the turbulent kinetic energy in the water columnThe project TURECOTOX (CTM2006-13884-C02-00/MAR) is funded from the Spanish Ministry of Education and SciencePeer Reviewe

New methodological approach to estimate the turbulent kinetic energy dissipation rate

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