DISPRO 2004

Name: DISPRO 2004
Start: 2004-06-08
End: 2004-06-15
Location: English Channel

Type	Oceanographic cruise
Set	This cruise is part of the set DISPRO
Ship	Côtes De La Manche
Ship owner	CNRS until 2019 - IFREMER since 2020
Dates	08/06/2004 - 15/06/2004
Chief scientist(s)	BAILLY DU BOIS Pascal
	INSTITUT NATIONAL DES SCIENCES ET TECHNIQUES DE LA MER Digue de Collignon 50110 Tourlaville +33(0)2 33.20.37.65 https://www.intechmer.cnam.fr/
DOI	10.17600/4480020
Objective	The DISPRO cruises enabled the validation of nearfield dispersion models by checking how representative simulated currents were in terms of direction and velocity and by adjusting the short and long term (from an hour to a week) dispersion parameters. Tritium is used as a tracer for an occasion discharge with known characteristics, in an area with intense hydrodynamic conditions (Raz Blanchard off the Cotentin peninsula, with currents reaching 5 m/s), taking a large number of measurements (several thousand) in the discharge plume. These surveys are carried out in close association with the validation of a specific hydrodynamic instantaneous current model for this zone developed by IFREMER/DEL/AO (mesh size 100 meters).

Sea/Ocean

English Channel

(Central Channel, Raz Blanchard, North West Cotentin)

Ports

Port of departure : Cherbourg (France)

Port of return : Cherbourg (France)

Project

DISPRO - A distributed system for monitoring and forecasting of the marine environment

Scientific Authority

INSTITUT DE RADIOPROTECTION ET DE SURETÉ NUCLÉAIRE

Laboratoire de Radioécologie de Cherbourg-Octeville (LRC)

RUE MAX POL FOUCHET

50130 OCTEVILLE

+33(0)2 33.01.41.00

https://www.irsn.fr/

Participating bodie(s)

IRSN, IFREMER, Muséum De Dinard

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
CHEMICAL OCEANOGRAPHY

Code	Label	Quantity	PI
B20	Molluscs Estimation of bivalve biomass	5 specimens	OLIVIER Fredéric
D71	Current profiler (eg ADCP) Measurements at fixed points around the Raz Blanchard during a tidal cycle	3 stations	BAILLY DU BOIS Pascal
D90	Other physical oceanographic meas. Bathymetry acquired by the Channel coast sounder, validated by SHOM	-	BAILLY DU BOIS Pascal
H31	Radioactivity Dissolved tritium in seawater	3539 measurements	BAILLY DU BOIS Pascal

Summary of measurements

-Surface sea water sampling (3539 samples)
-Currents measured with an ADCP profiler immersed for periods of 12 to 24h.
-Continuous bathymetric readings.
-Bottom sediment samples with Hamon grab.

Location map

Bibliography

Publications

Thiebot Jerome, Bailly Du Bois Pascal, Guillou Sylvain (2015). Numerical modeling of the effect of tidal stream turbines on the hydrodynamics and the sediment transport – Application to the Alderney Race (Raz Blanchard), France. Renewable Energy, 75, 356-365. https://doi.org/10.1016/j.renene.2014.10.021

Fievet Bruno, Pommier Julien, Voiseux Claire, Bailly Du Bois Pascal, Laguionie Philippe, Cossonnet Catherine, Solier Luc (2013). Transfer of Tritium Released into the Marine Environment by French Nuclear Facilities Bordering the English Channel. Environmental Science & Technology, 47(12), 6696-6703. https://doi.org/10.1021/es400896t

Bailly Du Bois P., Dumas Franck, Solier L., Voiseux C. (2012). In-situ database toolbox for short-term dispersion model validation in macro-tidal seas, application for 2D-model. Continental Shelf Research, 36, 63-82. Publisher's official version : https://doi.org/10.1016/j.csr.2012.01.011 , Open Access version : https://archimer.ifremer.fr/doc/00077/18775/