RRS Discovery D148

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD148
Cruise period1984-05-21 — 1984-06-11
Port of departureFalmouth, United Kingdom
Port of returnFunchal, Portugal
Objectives1. To sample repeatedly at a depth >3000m in order to provide a statistical basis for future deep-sea sampling programmes.
2. To fish a transect of oblique midwater nets between 44N and 36N to study the latitudinal succession of different species and the effects of different water masses upon these.
3. To fish a transect of otter trawls between 48N and 35N to study latitudinal differences in benthic fish populations.
4. To catch midwater and benthic animals for a variety of biochemical and experimental observations.
5. To test a new near-bottom echo sounder fitted to the midwater trawls.
6. To test a new linear release gear for midwater trawls.
Chief scientistHoward S J Roe (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D148 cruise report d148.pdf (0.64 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificAzores - Biscay Rise
Track chartsRRS Discovery D148 cruise track — trk3008.html
Physical oceanography 
BathythermographQuantity: number of profiles = 45
CTD stationsQuantity: number of stations = 6
Biology and fisheries 
ZooplanktonQuantity: number of hauls = 61
NektonQuantity: number of hauls = 122
Pelagic fishQuantity: number of hauls = 61
Description: survey:taxonomy,distribution,biomass determination
Gear research
Other biological/fisheries measurementDescription: bioluminescence
Routine standard measurements
Geology and geophysics 
Multi-beam echosoundingQuantity: track kilometres = 1480