SEABED II

Name: SEABED II
Start: 1980-11-05
End: 1980-11-25
Location: Northeast Atlantic Ocean (40W)

Type	Oceanographic cruise
Ship	Jean Charcot
Ship owner	Ifremer
Dates	05/11/1980 - 25/11/1980
Chief scientist(s)	SIBUET Myriam
	IFREMER SIEGE 1625 route de Sainte-Anne CS 10070 29280 PLOUZANE +33(0)2 98 22 40 40 https://www.ifremer.fr/fr
DOI	10.17600/80011111
Objective	Study of the impact of the burial of high-level radioactive waste on the seabed. Acquisition of benthic biology data in deep basins. Contract No TMC/14575: co-financed by CEA-CNEXO.

Sea/Ocean

Northeast Atlantic Ocean (40W)

(ATLANTIQUE NORD EST)

Ports

Port of departure : Las Palmas (Spain)

Port of return : Fort-de-France (Martinique)

Scientific Authority

LABORATOIRE ENVIRONNEMENT PROFOND

Centre Ifremer Bretagne

ZI Pointe du Diable

29280 Plouzané

+33 (0)2 98.22.43.04

https://www.umr-beep.fr/

Participating bodie(s)

CENTRE OCEANOLOGIQUE DE BRETAGNE BREST

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
MARINE GEOSCIENCES

Code	Label	Quantity	PI
B16	Benthic bacteria/micro-organisms	10	SIBUET Myriam
B18	Zoobenthos	10	SIBUET Myriam
B65	Exploratory fishing	-	SIBUET Jean-Claude
B71	Particulate organic matter (inc POC Carbone et azote	10	SIBUET Myriam
B73	Sediment traps	-	SIBUET Jean-Claude
D90	Other physical oceanographic meas. Mesures isolees de salinite et temperature au fond	9 measurements	VANGRIESHEIM Annick
G04	Core soft bottom	12 cores	SIBUET Myriam
G08	Bottom photography	3 images	SIBUET Myriam
G28	Magnetic measurements	-	SIBUET Myriam
G74	Multi-beam echosounding	-	LE SUAVE Raymond
G75	Single channel seismic reflection sondeur 3.5 kHz	-	SIBUET Myriam
H10	CTD stations	9 stations	SIBUET Myriam
H11	Subsurface meas. underway (T,S) Enreg. continu de salinite et temperature au fond	9 profiles	VANGRIESHEIM Annick
H21	Oxygen	9 stations	VANGRIESHEIM Annick
H24	Nitrate	9 stations	VANGRIESHEIM Annick
H25	Nitrite	9 stations	VANGRIESHEIM Annick
H26	Silicate	9 stations	VANGRIESHEIM Annick
H28	pH	9 stations	VANGRIESHEIM Annick

Summary of measurements

-Shooting by Raie system (3 strokes of 4 hours at 3 m from the bottom).
-Trawls (5 beam trawl hauls).
-Core sampling (6 per station): study of micro and macro fauna, bacteriology, biochemical analyses.
-Autonomous baited traps (9 moorings).
-Sediment trap (G-Rowe model): 1 mooring of 26 days.
-Hydrology at station: CTD.
-Seabeam bathymetric recording and bottom penetrating recording (3.5 kHz).
-Magnetometry.

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1972 = WGS72

Positioning system : SATELLITE (récepteur Magnavox)

Sampling operations

Name	Dive	Equipement	Date	Location	Depth(m)
KG-33	-	Carottier boite USNEL	19801109 00:00:0009/11/1980 00:00:00	24° 51.840' N 24° 59.120' W	-
KG-40	-	Carottier boite USNEL	19801116 00:00:0016/11/1980 00:00:00	19° 13.750' N 29° 49.940' W	-
SBD-US41	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 11.700' N 29° 46.800' W	-
SBD-US42	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 13.002' N 29° 48.498' W	-
SBD-US37	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 14.298' N 29° 47.700' W	-
SBD-CP/CPH17	-	Chalut a perche	19801101 00:00:0001/11/1980 00:00:00	24° 51.900' N 25° 0.198' W	-
SBD-CP/CPH18	-	Chalut a perche	19801101 00:00:0001/11/1980 00:00:00	24° 51.900' N 24° 56.502' W	-
SBD-US31	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	24° 53.100' N 24° 54.300' W	-
SBD-US34	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	24° 58.500' N 24° 52.602' W	-
SBD-US35	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	24° 53.502' N 24° 57.498' W	-
SBD-US36	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	24° 51.600' N 24° 56.400' W	-
SBD-US38	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 16.398' N 29° 46.800' W	-
SBD-US43	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 12.000' N 29° 48.000' W	-
SBD-CP/CPH16	-	Chalut a perche	19801101 00:00:0001/11/1980 00:00:00	24° 48.198' N 24° 59.598' W	-
SBD-CP/CPH19	-	Chalut a perche	19801101 00:00:0001/11/1980 00:00:00	19° 15.300' N 29° 49.302' W	-
SBD-US39	-	Carottier boite USNEL	19801101 00:00:0001/11/1980 00:00:00	19° 15.102' N 29° 45.900' W	-
SBD-CP/CPH20	-	Chalut a perche	19801101 00:00:0001/11/1980 00:00:00	19° 12.702' N 29° 49.098' W	-

Bibliography

Publications

Auffret Gerard, Le Suave Raymond, Kerbrat Rene, Sichler Bertrand, Roy S, Laj C, Muller C (1984). Sedimentation in the southern Cape Verde Basin: seismic and sediment facies. Geological Society, London, Special Publications "Fine-grained Sediments: Deep-water Processes and Facies", 15(1), 153-167. https://doi.org/10.1144/GSL.SP.1984.015.01.10

References of Articles published in other Periodicals or Scientific Works acclaimed in the Field

Macpherson E, Segonzac Michel (2005). Species of the genus Munidopsis (Crustacea, Decapoda, Galatheidae) from the deep Atlantic Ocean, including cold-seep and hydrothermal vent areas. Zootaxa, 1095(0), 3-60.

Name	Location	Begin date	Comment
SEABED II-NA11	19° 6.000' N 29° 30.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA10	24° 30.000' N 25° 0.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA8	24° 30.000' N 24° 36.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA12	19° 6.000' N 29° 30.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA6	24° 30.000' N 24° 36.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA14	19° 12.000' N 29° 30.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA13	19° 12.000' N 29° 30.000' W	19801101 00:00:0001/11/1980	-
SEABED II-NA7	24° 30.000' N 24° 36.000' W	19801101 00:00:0001/11/1980	-

French Oceanographic Cruises

SEABED II

Data managed by SISMER

Sampling operations

Moorings

Bibliography