Cruise inventory

RRS Discovery D89

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD89
Cruise period1977-11-23 — 1977-12-20
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnSouth Shields, United Kingdom
PurposeResearch
Objectives1. To recover and reset current meter moorings at nominal positions.
2. To set an additional current meter mooring at a site on the Azores-Biscay rise close to 41.5N 20W.
3. To test and incorporate in a current meter mooring a depth and tilt telemetering command pinger.
4. To carry out extensive wire tests of acoustic release and command equipment.
5. To deploy this acoustic equipment on a temporary mooring and to conduct acoustic ranging trials.
6. To test and use a free fall acoustic profiler in order to determine vertical profiles of current velocity.
7. To make tests of a sea surface, acoustically tracked float made from plastic components.
8. To deploy T-7 XBT probes at 40km intervals on all passage legs.
Chief scientistW John Gould (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D89 cruise report d89.pdf — access key 'C' (0.63 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D89 cruise track — trk2448.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 3704
Description: T only
BathythermographQuantity: number of profiles = 100
CTD stationsQuantity: number of stations = 3
Current metersQuantity: number of deployments = 4
Description: 270 days
Current profiler (eg ADCP)Quantity: number of deployments = 10
Currents measured from ship driftQuantity: track kilometres = 3704
Meteorology 
Routine standard measurements
Geology and geophysics 
Multi-beam echosoundingQuantity: track kilometres = 3704