CITHER 3 LEG 2

Name: CITHER 3 LEG 2
Start: 1995-02-21
End: 1995-04-02
Location: Atlantic Ocean

Type	Oceanographic cruise
Set	This cruise is part of the set CITHER : CIRCULATION THERMOCLINE
Ship	L'Atalante
Ship owner	Ifremer
Dates	21/02/1995 - 02/04/1995
Chief scientist(s)	ARHAN Michel
	LABORATOIRE D'OCÉANOGRAPHIE PHYSIQUE ET SPATIALE - UMR 6523 Centre Ifremer Bretagne ZI Pointe du Diable CS 10070 29280 Plouzané +33 (0)2 98 22 42 76 dirumr6523@ifremer.fr http://www.umr-lops.fr/
DOI	10.17600/95010012
Objective	Hydrology/geochemistry leg in the South East Atlantic between Capetown and 04°30N-01°00W in the WOCE (World Ocean Circulation Experiment) framework.

Sea/Ocean

Atlantic Ocean

(15N-40S 20W-20E)

Ports

Port of departure : Cape Town (South Africa)

Port of return : Dakar (Senegal)

Project

Global Ocean Ship-based Hydrographic Investigations Program,WOCE - FRANCE HYDROLOGY

Scientific Authority

OPS / LABORATOIRE DE PHYSIQUE DES OCEANS (LPO)

IFREMER Centre de Bretagne

ZI Pointe du diable

29280 PLOUZANE

+33 (0)2 98.22.42.76

fabrice.ardhuin@ifremer.fr

http://www.umr-lops.fr/

Participating bodie(s)

Lab. Physique des Oceans : IFREMER/CNRS/UBO, U Breme, U. Las Palmas, BPNL/Sequim(USA), LODYC/CNRS, UBO.

Discipline(s)

CHEMICAL OCEANOGRAPHY
PHYSICAL OCEANOGRAPHY

Code	Label	Quantity	PI
D71	Current profiler (eg ADCP) Courantometre Doppler (75 et 300kHz) LADCP	20 stations	ARHAN Michel
G28	Magnetic measurements	-	ARHAN Michel
G74	Multi-beam echosounding EM12D	-	ARHAN Michel
H09	Water bottle stations	-	ARHAN Michel
H10	CTD stations	135 stations	ARHAN Michel
H13	Bathythermograph	14 profiles	ARHAN Michel
H21	Oxygen	135 stations	ARHAN Michel
H22	Phosphate Voir Pascal MORIN (UBO)	135 stations	ARHAN Michel
H24	Nitrate Voir Pascal MORIN (UBO)	135 stations	ARHAN Michel
H26	Silicate Voir Pascal MORIN (UBO)	135 stations	ARHAN Michel
H27	Alkalinity Voir GONZALES (U. Las Palmas)	135 stations	ARHAN Michel
H28	pH Voir GONZALES (U. Las Palmas)	135 stations	ARHAN Michel
H71	Surface measurements underway (T,S) Thermomètre TQP et Thermosalinomètre SIS	-	ARHAN Michel
H73	Geochemical tracers (eg freons) Voir M. J. MESSIAS (LODYC/CNRS)	135 stations	ARHAN Michel
H74	Carbon dioxide Voir Linda BINGLER (BNPL/SEQUIM/USA)	135 stations	ARHAN Michel
M06	Routine standard measurements Centrale Meteo et Centrale Vent	-	ARHAN Michel

Summary of measurements

-Hydrology and geochemistry stations from surface to bottom (CTD measurements).
-Determining oxygen, freon, total carbon, nutrients, salinity, Ph and alkalinity concentrations - water samples taken at 32 levels.
-Direct measurements of currents using shipboard Doppler current meters (300 and 75 KHz)
- Current measured directly by Doppler current meter attached to CTD chassis.
-Bathymetric surveys using EM12D multibeam echosounder along the hydrology leg and along the track in transit between 04°30N-01°00W and Dakar.
-XBT casts between the hydrology leg and Walvis Bay.
-Ship's sensors: weather unit, temperature, surface salinity.

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84

Positioning system : GPS naturel (WGS84)

Data managed by SISMER

Bibliography

Publications

Herbert G., Bourles B., Penven P., Grelet J. (2016). New insights on the upper layer circulation north of the Gulf of Guinea. Journal Of Geophysical Research-oceans, 121(9), 6793-6815. https://doi.org/10.1002/2016JC011959

Alvarez M., Brea S., Mercier Herle, Alvarez-Salgado X. A. (2014). Mineralization of biogenic materials in the water masses of the South Atlantic Ocean. I: assessment and results of an optimum multiparameter analysis. Progress In Oceanography, 123, 1-23. Publisher's official version : https://doi.org/10.1016/j.pocean.2013.12.007 , Open Access version : https://archimer.ifremer.fr/doc/00171/28178/

Hoppema M., Velo A., Van Heuven S., Tanhua T., Key R. M., Lin X., Bakker D. C. E., Perez F. F., Ríos A. F., Lo Monaco C., Sabine C. L., Álvarez M., Bellerby R. G. J. (2009). Consistency of cruise data of the CARINA database in the Atlantic sector of the Southern Ocean. Earth System Science Data, 1(1), 63-75. Publisher's official version : https://doi.org/10.5194/essd-1-63-2009 , Open Access version : https://archimer.ifremer.fr/doc/00218/32922/

Arhan Michel, Treguier Anne-Marie, Bourles B, Michel Sylvain (2006). Diagnosing the annual cycle of the equatorial undercurrent in the Atlantic Ocean from a general circulation model. Journal of Physical Oceanography, 36(8), 1502-1522. https://doi.org/10.1175/JPO2929.1

Braga Es, Andrie C, Bourles B, Vangriesheim Annick, Baurand F, Chuchla R (2004). Congo River signature and deep circulation in the eastern Guinea Basin. Deep Sea Research Part I Oceanographic Research Papers, 51(8), 1057-1073. https://doi.org/10.1016/j.dsr.2004.03.005

Brea Samenta, Alvarez Salgado X, Alvarez M, Perez F, Memery L, Mercier Herle, Messias M.J. (2004). Nutrient mineralization rates and ratios in the eastern South Atlantic - art. no. C05030. Journal of Geophysical Union - Research C - Oceans, 109(C5), NIL_29-NIL_43. Publisher's official version : https://doi.org/10.1029/2003JC002051 , Open Access version : https://archimer.ifremer.fr/doc/00000/836/

Rios Af, Alvarez-Salgado Xa, Perez Ff, Bingler Ls, Aristegui J, Memery L (2003). Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry. Journal Of Geophysical Research-oceans, 108(C4), 3123 (16p.). https://doi.org/10.1029/2000JC000366

Alvarez-Salgado Xa, Perez Ff, Rios Af, Doval Md (2001). Basin-scale changes of total organic carbon profiles in the eastern South Atlantic. Scientia Marina, 65(1), 1-10. https://doi.org/10.3989/scimar.2001.65n11

Arhan Michel, Mercier Herle, Lutjeharms Johann (1999). The disparate evolution of three Agulhas rings in the South Atlantic Ocean. Journal Of Geophysical Research-oceans, 104(C9), 20987-21005. https://doi.org/10.1029/1998JC900047

References of Technical Reports

Arhan Michel, Billant Andre, Branellec Pierre, Mercier Herle, Memery Laurent, Messias Marie-José, Morin Pascal, Wafar Mohideen, Alvarez Salgado Xosé, Aristegui Javier, Gonzalez-Davila Melchor, Pazo Fernandez Maria José, Rellan Trinidad, Rios Aida, Bingler Linda (1998). Campagne CITHER 3 N/O l'Atalante (11 janvier - 2 avril 1995). Recueil de données. Volume 3 : Traceurs Géochimiques. LPO 98-03. https://archimer.ifremer.fr/doc/00238/34920/

Arhan Michel, Billant Andre, Branellec Pierre, Mercier Herle (1996). Campagne CITHER 3 N/O l'Atalante (11 janvier - 2 avril 1995). Recueil de données. Volume 2 : Données CTD-O2. LPO 96-05. https://archimer.ifremer.fr/doc/00238/34919/