Cruise inventory

RRS Discovery D194

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD194
Cruise period1990-08-04 — 1990-09-02
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnSanta Cruz de Tenerife, Spain
PurposeResearch
Objectives1. To measure the benthic biomass as an appropriate site with little seasonal change near 31N 20W and its distribution between different taxonomic, functional and size categories, for comparison with similar data from a site 48 50'N 16 30'W sampled in 1989 and subject to substantial deep winter mixing.
2. To monitor the behaviour and movements of macrourid fishes using a pop-up vehicle baited with ingestible acoustic tags.
3. To study aspects of the physiology of midwater animals and in particular the reactions of crustaceans to illuminated trawls.
Chief scientistPeter J Herring (Institute of Oceanographic Sciences Deacon Laboratory)
Cruise reportRRS Discovery D194 cruise report d194.pdf — access key 'C' (1.35 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Specificmain sampling area 03105N, 02110W
Track chartsRRS Discovery D194 cruise track — trk3596.html
Measurements 
Physical oceanography 
CTD stationsQuantity: number of profiles = 11
Biology and fisheries 
ZooplanktonQuantity: number of samples = 46
Description: net samples at discrete depths using IOSDL rectangular mid-water trawl system
NeustonQuantity: number of hauls = 8
Description: Neuston hauls with IOS neuston net
NektonQuantity: number of samples = 46
Description: net samples at discrete depths using IOSDl rectangular mid-water trawl system
Benthic bacteria/micro-organismsDescription: bacterial production and densities in sediment samples
ZoobenthosQuantity: number of hauls = 3
Description: OTTER trawls
ZoobenthosQuantity: number of hauls = 6
Description: trawls - epibenthic sledge hauls
Demersal fishQuantity: number of hauls = 6
Description: trawls - epibenthic sledge hauls
Demersal fishQuantity: number of hauls = 3
Description: OTTER trawls
Demersal fishQuantity: number of deployments = 10
Description: Deployment & recovery of fish lure & camera system with fish tracking facility
TaggingsQuantity: number of deployments = 10
Description: Deployment & recovery of fish lure & camera system with fish tracking facility
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 29
Description: days - synoptic met. observations, voluntary observing vessel
Geology and geophysics 
Core - soft bottomQuantity: number of deployments = 29
Description: core sets - multicorer
Core - soft bottomQuantity: number of cores = 15
Description: cores - box corer
Single-beam echosoundingDescription: on passage - PES 10kHz bathymetry
Moorings, landers, buoys 
Biology and fisheries 
Zoobenthos31° 4' 59" N  21° 10' 0" W — Bathysnap - time lapse camera, deployed 31 Aug
Zoobenthos31° 4' 59" N  21° 13' 0" W — Bathysnap - time lapse camera, deployed 16 Aug, recovered 30 Aug
Demersal fish31° 3' 0" N  21° 10' 59" W — Fish bait/acoustic tags with camera/hydrophone, deployed 19Aug, recovered 21Aug
Demersal fish31° 3' 0" N  21° 15' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 21Aug, recovered 23Aug
Demersal fish31° 11' 59" N  21° 10' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 23Aug, recovered 25Aug
Demersal fish31° 15' 0" N  21° 10' 59" W — Fish bait/acoustic tags with camera/hydrophone, deployed 25Aug, recovered 27Aug
Demersal fish31° 16' 0" N  21° 6' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 15Aug, recovered 17Aug
Demersal fish31° 4' 0" N  21° 13' 0" W — Bathysnack - baited camera, deployed 24 Aug, recovered 30 Aug
Demersal fish31° 7' 59" N  21° 7' 59" W — Bathysnack - baited camera, deployed 18 Aug, recovered 23 Aug
Demersal fish31° 13' 0" N  21° 6' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 17Aug, recovered 19Aug
Demersal fish31° 8' 59" N  21° 7' 59" W — Fish bait/acoustic tags with camera/hydrophone, deployed 30Aug, recovered 31Aug
Demersal fish32° 38' 59" N  20° 30' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 13Aug, recovered 15Aug
Demersal fish28° 41' 59" N  21° 36' 0" W — Fish bait/acoustic tags with camera/hydrophone, deployed 11Aug, recovered 12Aug
Demersal fish31° 7' 0" N  21° 8' 59" W — Fish bait/acoustic tags with camera/hydrophone, deployed 28Aug, recovered 29Aug