ALMOFRONT 2 - LEG 2

Name: ALMOFRONT 2 - LEG 2
Start: 1997-12-23
End: 1998-01-16
Location: Alboran Sea

Type	Oceanographic cruise
Set	This cruise is part of the set ALMOFRONT
Ship	L'Atalante
Ship owner	Ifremer
Dates	23/12/1997 - 16/01/1998
Chief scientist(s)	PRIEUR Louis
	LABORATOIRE D'OCÉANOGRAPHIE DE VILLEFRANCHE-SUR-MER - UMR 7093 181 chemin du Lazaret 06230 Villefranche-sur-Mer +33 (0)4 93 76 38 13 lov@obs-vlfr.fr https://lov.imev-mer.fr/web/
DOI	10.17600/97010132
Objective	Understanding and predicting increase in production and export in the frontal zone: Determining the physical variables and dynamics which maintain the geostrophic front: Density and current fields and their evolution on time-scale of a few days, in order to correctly remove the potential vorticity and the deformation field on the scale of a meander. These observations will be used to determine the secondary circulation and spatial variations on the sub-mesoscale of the vertical velocity constant. Characterization of the primary and secondary levels of the ecosystem/ nutrilite inputs depending on secondary circulation, changes in composition and abundance in the different parts of the jet and on its edges, etc.

Sea/Ocean

Alboran Sea

(N 35 00 a N 37 00 W003 00 a W000 00.)

Ports

Port of departure : Almeria (Spain)

Port of return : Almeria (Spain)

Project

JGOFS - FRANCE/PROOF

Scientific Authority

LABORATOIRE D'OCÉANOGRAPHIE DE VILLEFRANCHE-SUR-MER - UMR 7093

181 chemin du Lazaret

06230 Villefranche-sur-Mer

+33 (0)4 93 76 38 13

lov@obs-vlfr.fr

https://lov.imev-mer.fr/web/

Participating bodie(s)

INSU,UBO,Ecole Navale,LPCM,LOBEPM,COM et Microbiologie.

Discipline(s)

ENVIRONMENT
BIOLOGICAL OCEANOGRAPHY
CHEMICAL OCEANOGRAPHY

Code	Label	Quantity	PI
D01	Current meters	-	PRIEUR Louis
D71	Current profiler (eg ADCP) ADCP 300 Khz et 75 Khz.	-	PRIEUR Louis
G24	Long to short range side scan sonar Imagerie associee au sondeur	-	PRIEUR Louis
G27	Gravity measurements Gravimetre KSS30 Bodenseewerk.	-	PRIEUR Louis
G74	Multi-beam echosounding Sondeur multifaisceaux EM12D.	-	PRIEUR Louis
H09	Water bottle stations CTD et rosette avec declenchement de 12 bouteilles.	109 stations	PRIEUR Louis
H10	CTD stations Couple au TEA.	109 stations	PRIEUR Louis
H13	Bathythermograph Sondes SPARTON XBT	-	PRIEUR Louis
H71	Surface measurements underway (T,S) Thermomètre TQP et Thermosalinomètre	-	PRIEUR Louis
H90	Other chemical oceanographic meas. Systeme Hydro Electrique Tracte.	-	PRIEUR Louis
M06	Routine standard measurements Centrale météo Anderaa et centrale vent	-	PRIEUR Louis

Summary of measurements

-CTD and rosette stations. Fluorescence and bioluminescence measurements with release of 12 bottles.
-TSG and 75 kHz and 300 kHz ADCP prospecting. Salinity, conductivity, density, temperature, sound velocity, density and current speed measurements.
-TOWYO CTD profiles using TEA (automated shipboard winch). Field density and velocity measurements. CTD and fluorescence, oxygen and light attenuation sensors.
-Mooring current meters coupled with thermistor arrays. Measuring small time scale movements at the fixed point and size and scope of the tide.
-SHET (towed hydro electric system) stations. Measurements of temperature, conductivity, depth, optical diffusion of light and chemical compounds. Towfish with probe pump.
-Continuous logging by meteo attenuation station
-EM12D SIMRAD multibeam echosounder.
-Water temperature measurements with XBT probes.
-Gravity measurements using a Bodenseewerk KSS30.

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84

Positioning system : GPS DIFF SERCEL NR103 et Marinestar.

Published data

MediMap Group, Benoît Loubrieu, Jean Mascle (2008). Bathy-morphologie de la Méditerranée (Medimap, édition 2008, résolution 1000m). https://doi.org/10.12770/5924fa10-ac45-11de-8853-000086f6a603

Data managed by SISMER

Bibliography

Publications

Sauzede R., Claustre H., Jamet C., Uitz J., Ras J., Mignot A., D'Ortenzio F. (2015). Retrieving the vertical distribution of chlorophyll a concentration and phytoplankton community composition from in situ fluorescence profiles: A method based on a neural network with potential for global-scale applications. Journal Of Geophysical Research-oceans, 120(1), 451-470. Publisher's official version : https://doi.org/10.1002/2014JC010355 , Open Access version : https://archimer.ifremer.fr/doc/00465/57695/

Organelli Emanuele, Bricaud Annick, Antoine David, Uitz Julia (2013). Multivariate approach for the retrieval of phytoplankton size structure from measured light absorption spectra in the Mediterranean Sea (BOUSSOLE site). Applied Optics, 52(11), 2257-2273. Publisher's official version : https://doi.org/http://dx.doi.org/10.1364/AO.52.002257 , Open Access version : https://archimer.ifremer.fr/doc/00185/29655/

Mignot A., Claustre H., D'Ortenzio F., Xing X., Poteau A., Ras J. (2011). From the shape of the vertical profile of in vivo fluorescence to Chlorophyll-a concentration. Biogeosciences, 8(8), 2391-2406. Publisher's official version : https://doi.org/10.5194/bg-8-2391-2011 , Open Access version : https://archimer.ifremer.fr/doc/00248/35968/

Oubelkheir Kadija, Claustre Herve, Bricaud Annick, Babin Marcel (2007). Partitioning total spectral absorption in phytoplankton and colored detrital material contributions. Limnology And Oceanography-methods, 5(11), 384-395. https://doi.org/10.4319/lom.2007.5.384

Morel A, Belanger S (2006). Improved detection of turbid waters from ocean color sensors information. Remote Sensing Of Environment, 102(3-4), 237-249. https://doi.org/10.1016/j.rse.2006.01.022

Tolosa I, Leblond N, Marty Jc, de Mora S, Prieur Louis (2005). Export fluxes of organic carbon and lipid biomarkers from the frontal structure of the Alboran sea (SW Mediterranean sea) in winter. Journal Of Sea Research, 54(2), 125-142. https://doi.org/10.1016/j.seares.2005.04.002

Bricaud Annick, Claustre Herve, Ras Josephine, Oubelkheir Kadija (2004). Natural variability of phytoplanktonic absorption in oceanic waters: Influence of the size structure of algal populations. Journal Of Geophysical Research-oceans, 109(C11010), 1-12. https://doi.org/10.1029/2004JC002419

Tolosa I, Vescovali I, Leblond N, Marty Jc, de Mora S, Prieur Louis (2004). Distribution of pigments and fatty acid biomarkers in particulate matter from the frontal structure of the Alboran Sea (SW Mediterranean Sea). Marine Chemistry, 88(3-4), 103-125. https://doi.org/10.1016/j.marchem.2004.03.005

Leblanc K, Queguiner B, Prieur Louis, Claustre H, Oubelkheir K, Bruyant F (2004). Siliceous phytoplankton production and export related to trans-frontal dynamics of the Almeria-Oran frontal system (western Mediterranean Sea) during winter. Journal Of Geophysical Research-oceans, 109(C7), 16p. https://doi.org/10.1029/2003JC001878

Riso Rd, Le Corre P, L'Helguen S, Morin Pascal (2004). On the presence of a cadmium-rich subsurface water mass in the western Mediterranean and its influence on the distribution of cadmium in the surface waters. Marine Chemistry, 87(1-2), 15-22. https://doi.org/10.1016/S0304-4203(03)00115-4

Andersen V, Devey C, Gubanova A, Picheral M, Melnikov V, Tsarin S, Prieur Louis (2004). Vertical distributions of zooplankton across the Almeria-Oran frontal zone (Mediterranean Sea). Journal Of Plankton Research, 26(3), 275-293. https://doi.org/10.1093/plankt/fbh036

Tolosa I, Leblond N, Copin-Montegut C, Marty Jc, de Mora S, Prieur Louis (2003). Distribution of sterol and fatty alcohol biomarkers in particulate matter from the frontal structure of the Alboran Sea (S.W Mediterranean Sea). Marine Chemistry, 82(3-4), 161-183. https://doi.org/10.1016/S0304-4203(03)00051-3

Gaudy R, Youssara F (2003). Variations of zooplankton metabolism and feeding in the frontal area of the Alboran Sea (western Mediterranean) in winter. Oceanologica Acta, 26(2), 179-189. Publisher's official version : https://doi.org/10.1016/S0399-1784(02)00005-1 , Open Access version : https://archimer.ifremer.fr/doc/00322/43275/

Pantoja S, Repeta Dj, Sachs Jp, Sigman Dm (2002). Stable isotope constraints on the nitrogen cycle of the Mediterranean Sea water column. Deep-sea Research Part I-oceanographic Research Papers, 49(9), 1609-1621. https://doi.org/10.1016/S0967-0637(02)00066-3

Bricaud A, Bosc E, Antoine D (2002). Algal biomass and sea surface temperature in the Mediterranean Basin - Intercomparison of data from various satellite sensors, and implications for primary production estimates. Remote Sensing Of Environment, 81(2-3), 163-178. https://doi.org/10.1016/S0034-4257(01)00335-2

Jacquet S, Prieur Louis, Avois-Jacquet C, Lennon Jf, Vaulot D (2002). Short-timescale variability of picophytoplankton abundance and cellular parameters in surface waters of the Alboran Sea (western Mediterranean). Journal Of Plankton Research, 24(7), 635-651. https://doi.org/10.1093/plankt/24.7.635

Grout H, Sempere R, Thill A, Calafat A, Prieur Louis, Canals M (2001). Morphological and chemical variability of colloids in the Almeria-Oran Front in the eastern Alboran Sea (SW Mediterranean Sea). Limnology And Oceanography, 46(6), 1347-1357. https://doi.org/10.4319/lo.2001.46.6.1347

Youssara F, Gaudy R (2001). Variations of zooplankton in the frontal area of the Alboran sea (Mediterranean sea) in winter 1997. Oceanologica Acta, 24(4), 361-376. Publisher's official version : https://doi.org/10.1016/S0399-1784(01)01154-9 , Open Access version : https://archimer.ifremer.fr/doc/00322/43348/

Cussatlegras As, Geistdoerfer P, Prieur L (2001). Planktonic bioluminescence measurements in the frontal zone of Almeria-Oran (Mediterranean Sea). Oceanologica Acta, 24(3), 239-250. Publisher's official version : https://doi.org/10.1016/S0399-1784(01)01143-4 , Open Access version : https://archimer.ifremer.fr/doc/00322/43352/

Claustre H, Fell F, Oubelkheir K, Prieur Louis, Sciandra A, Gentili B, Babin M (2000). Continuous monitoring of surface optical properties across a geostrophic front: Biogeochemical inferences. Limnology And Oceanography, 45(2), 309-321. https://doi.org/10.4319/lo.2000.45.2.0309

Thesis using campaign data

Barral Quentin-Boris (2022). Caractérisation du Front Nord-Baléares : variabilité et rôle de la circulation des masses d’eau en Méditerranée Occidentale. PhD Thesis, Université de Toulon. https://archimer.ifremer.fr/doc/00807/91922/