Cruise inventory

RRS Discovery D228

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD228
Cruise period1997-05-21 — 1997-06-28
StatusCompleted
Port of departureVigo, Spain
Port of returnVigo, Spain
PurposeResearch
ObjectivesFirst of three "Amores" (EC-MAST III) cruises in 1997 to study submarine hydrothermal activity on the mid-Atlantic Ridge close to the Azores. The principal objective of this cruise was to identify/locate the source of venting to the Rainbow Hydrothermal Plume nr. 36° 15'N and investigate physical, geochemical and biological fluxes away from this vent-site to the oceans on the segment (10-20km) scale. Tasks were approached using the following equipment:
CTDs (+ or - lowered ADCP): Physical Oceanography, Geochemistry, MicroBio
BRIDGET (deep-tow CTD): Physical Oceanography, Geochemistry, MicroBio
In-situ Filtration (SAPs): Geochemistry, Microbio, Molec Bio
RMT 1 + 8 Trawl Nets: Macrobiology, Molecular Biology
Chief scientistChristopher R German (Southampton Oceanography Centre)
Project1) BRIDGE 2) AMORES
Coordinating body1) NERC-UK 2) EC-MAST III
Cruise reportRRS Discovery D228 cruise report d228.pdf — access key 'C' (1.59 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
SpecificMid-Atlantic Ridge
Track chartsRRS Discovery D228 cruise track — trk4283.html
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Water bottle stationsQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Water bottle stationsQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
CTD stationsQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
CTD stationsQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
CTD stationsQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Transparency (eg transmissometer)Quantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Transparency (eg transmissometer)Quantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Transparency (eg transmissometer)Quantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Current profiler (eg ADCP)Quantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Chemical oceanography 
OxygenQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
OxygenQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
OxygenQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Other dissolved gasesQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Other dissolved gasesQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Other dissolved gasesQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
SilicateQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
SilicateQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
SilicateQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Trace elementsQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Trace elementsQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Trace elementsQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Trace elementsQuantity: number of profiles = 11
Description: In-situ filtration stations collecting large volume samples of hydrothermal plume particles for natural radioactivity, inorganic and organic geochemistry, microbiology and molecular biology
RadioactivityQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
RadioactivityQuantity: number of profiles = 11
Description: In-situ filtration stations collecting large volume samples of hydrothermal plume particles for natural radioactivity, inorganic and organic geochemistry, microbiology and molecular biology
Other chemical oceanographic measurementsQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Other chemical oceanographic measurementsQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Other chemical oceanographic measurementsQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Biology and fisheries 
Biochemical measurements (eg lipids, amino acids)Quantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Biochemical measurements (eg lipids, amino acids)Quantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Biochemical measurements (eg lipids, amino acids)Quantity: number of profiles = 11
Description: In-situ filtration stations collecting large volume samples of hydrothermal plume particles for natural radioactivity, inorganic and organic geochemistry, microbiology and molecular biology
Biochemical measurements (eg lipids, amino acids)Quantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Pelagic bacteria/micro-organismsQuantity: number of deployments = 17
Description: Deep tow BRIDGET (CTD + optical sensor) tow-yos through hydrothermal plumes, sampling for inorganic + organic geochemistry plus microbiology from 12-bottle (2.5L) Rosette
Pelagic bacteria/micro-organismsQuantity: number of profiles = 11
Description: In-situ filtration stations collecting large volume samples of hydrothermal plume particles for natural radioactivity, inorganic and organic geochemistry, microbiology and molecular biology
Pelagic bacteria/micro-organismsQuantity: number of profiles = 26
Description: Vertical CTD + optical sensor hydrocasts - sampling of hydrothermal plumes for inorganic + organic geochemistry plus microbiology using 16-bottle (8L) IFREMER Rosette
Pelagic bacteria/micro-organismsQuantity: number of profiles = 30
Description: Vertical CTD hydrocasts with optical sensors and lowered ADCP. Sampling of hydrothermal plumes for natural radioactivity, inorganic and organic geochemistry and microbiology using 12 bottle large-volume (30L) Rosette
Pelagic fishQuantity: number of hauls = 30
Description: 10 x 3 x (RMT 1 + 8) net trawls through mid-Atlantic Ridge Rift Valley for hydrothermal vent fauna and other pelagic fish
Geology and geophysics 
Other geological/geophysical measurementsQuantity: number of profiles = 11
Description: In-situ filtration stations collecting large volume samples of hydrothermal plume particles for natural radioactivity, inorganic and organic geochemistry, microbiology and molecular biology
Moorings, landers, buoys 
Physical oceanography 
Transparency (eg transmissometer)36° 17' 11" N  33° 53' 57" W — 4 current meters at 2300m, 2100m, 1800m and 100m + release (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 14' 39" N  33° 54' 1" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 25' 24" N  33° 38' 40" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 17' 17" N  33° 51' 5" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 16' 33" N  33° 54' 8" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 13' 35" N  33° 50' 40" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 16' 15" N  33° 52' 58" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Transparency (eg transmissometer)36° 11' 49" N  33° 47' 58" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 11' 49" N  33° 47' 58" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 16' 33" N  33° 54' 8" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 25' 24" N  33° 38' 40" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 13' 35" N  33° 50' 40" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 14' 39" N  33° 54' 1" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 16' 15" N  33° 52' 58" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 17' 17" N  33° 51' 5" W — 3 current meters at 2300m, 2100m and 1800m + an acoustic release 100m off-bottom + buoyancy - 2100m CMs are all equipped with SEATECH LSS (optical backscatter) sensors (deployed June 15 + 16 1997 - to be recovered summer of 1998)
Current meters36° 17' 11" N  33° 53' 57" W — 4 current meters at 2300m, 2100m, 1800m and 100m + release (deployed June 15 + 16 1997 - to be recovered summer of 1998)