EPI 5 - GASCOR

Name: EPI 5 - GASCOR
Start: 1986-03-07
End: 1986-03-24
Location: Northeast Atlantic Ocean (40W)

Type	Oceanographic cruise
Set	This cruise is part of the set EPI : ENVIRONNEMENT PROFOND : IMPACT
Ship	Le Noroit
Ship owner	Ifremer
Dates	07/03/1986 - 24/03/1986
Chief scientist(s)	AUFFRET Gérard
	GEO-OCEAN - UMR 6538 Univ. Brest, CNRS, Ifremer, Univ. Bretagne Sud Place Nicolas Copernic 29280 Plouzané https://www.geo-ocean.fr/
DOI	10.17600/86000111
Objective	Developing observation tools and methods to identify physical, sedimentological and biological mechanisms involved in exchanges of matter in the deep ocean layer in the abyssal zone.

Sea/Ocean

Northeast Atlantic Ocean (40W)

(ATLANTIQUE NORD EST)

Ports

Port of departure : Brest (France)

Port of return : Brest (France)

Scientific Authority

GÉOSCIENCES MARINES

Centre Ifremer Bretagne

ZI Pointe du Diable

29280 Plouzané

+33(0)2 98.22.42.24

Participating bodie(s)

IFREMER

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
MARINE GEOSCIENCES

Code	Label	Quantity	PI
D01	Current meters	2 deployments	AUFFRET Gérard
H10	CTD stations	5 stations	VANGRIESHEIM Annick
H17	Optics (eg underwater light levels)	4 stations	AUFFRET Gérard
H72	Thermistor chain	1 deployments	AUFFRET Gérard

Summary of measurements

-Recovery and mooring of systems for observation or experiments, i.e.: Multidisciplinary autonomous module (MAP) equipped with current meters, thermistor chains, nephelometer and underwater video camera; MAC; PAP.
-Trawling to sample the macrobenthos.
-Core sampling: Küllenberg (6), Usnel (1).
-Bathymetry.
-Surveying bottom using 3.5 kHz sub-bottom profiler.
-5 stations with Neil Brown CTD (with water samples).
-Trial (non-conclusive) to deploy a piezometric probe.

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1972 = WGS72

Positioning system : Pblt WGS72

Sampling operations

Name	Dive	Equipement	Date	Location	Depth(m)
EP5-KS-01	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	46° 19.450' N 12° 36.090' W	3715
KG-01	-	Carottier boite USNEL	19860314 00:00:0014/03/1986 00:00:00	46° 18.320' N 12° 33.380' W	-
KG-02	-	Carottier boite USNEL	19860317 00:00:0017/03/1986 00:00:00	47° 27.950' N 8° 27.990' W	-
KG-03	-	Carottier boite USNEL	19860321 00:00:0021/03/1986 00:00:00	47° 28.730' N 8° 29.160' W	-
KR-01	-	Carottier boite REYNECK	19860310 00:00:0010/03/1986 00:00:00	47° 24.900' N 10° 10.000' W	-
KR-02	-	Carottier boite REYNECK	19860311 00:00:0011/03/1986 00:00:00	46° 54.060' N 11° 13.810' W	-
KS-02	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	47° 41.610' N 8° 7.080' W	1105
KS-03	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	47° 46.640' N 7° 59.630' W	575
KS-04	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	47° 37.050' N 7° 52.670' W	-
KS-05	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	47° 49.720' N 7° 52.670' W	360
KS-06	-	Carottier KULLENBERG	19860101 00:00:0001/01/1986 00:00:00	47° 44.880' N 8° 8.860' W	1020
SP-0	-	PENETROMETRE (TYPE NON PRECISE)	19860319 00:00:0019/03/1986 00:00:00	47° 42.100' N 8° 7.690' W	-
SP-1	-	PENETROMETRE (TYPE NON PRECISE)	19860319 00:00:0019/03/1986 00:00:00	47° 41.250' N 8° 7.100' W	-
EP5-CP/CPH42	-	Chalut a perche	19860312 00:00:0012/03/1986 00:00:00	46° 22.698' N 12° 36.798' W	-

Bibliography

Publications

Bourillet Jean-Francois , Reynaud Jy, Baltzer Agness, Zaragosi S (2003). The 'Fleuve Manche': the submarine sedimentary features from the outer shelf to the deep-sea fans. Journal Of Quaternary Science, 18(3-4), 261-282. https://doi.org/10.1002/jqs.757

Mahaut Marie-Laure, Geistdoerfer Patrick, Sibuet Myriam (1990). Trophic strategies in carnivorous fishes: their significance in energy transfer in the deep-sea benthic ecosystem (Meriadzek Terrace — Bay of Biscay). Progress In Oceanography, 24(1-4), 223-237. https://doi.org/10.1016/0079-6611(90)90032-W

Desaubies Yves (1986). Lost CTD recovered by French sub. Eos, Transactions American Geophysical Union, 67(48), 1355-1356. Publisher's official version : https://doi.org/10.1029/EO067i048p01355-02 , Open Access version : https://archimer.ifremer.fr/doc/00451/56269/

File	Mission	Processing level	Size	Format
Open access FI35198600011_12070_D01.txt		DATA CONTROLLED WITH SCOOP	350 KB	MEDATLAS, ODV or NC
Open access FI35198600011_57320_D01.txt		DATA CONTROLLED WITH SCOOP	391 KB	MEDATLAS, ODV or NC

French Oceanographic Cruises

EPI 5 - GASCOR

Data managed by SISMER

Sampling operations

Bibliography