Cruise inventory

RRS Discovery D34

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD34
Cruise period1970-06-02 — 1970-06-29
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnSouthampton, United Kingdom
PurposeResearch
ObjectivesTo cooperate with 'HMS Hecla' and 'OWS Cumulus' in preliminary trials of equipment and methods, in preparation for the proposed Royal Society air-sea interaction projects in 1972. This preliminary trial was given the name 'JASIN'. The most important item of the trials on board the 'Discovery' was the evaluation of the 'LOCATE' system for wind measurement, by comparison with observations from the Selenia radar on board 'Cumulus'. Most of the other equipment used was not new, and observations with it were aimed at exploring the situation in that area, and providing material needed to assess the feasibility of achieving the aims of the main experiment. The only new oceanographic equipment tried was the shear spar.
Chief scientistJohn C Swallow (National Institute of Oceanography)
Cruise reportRRS Discovery D34 cruise report d34.pdf — access key 'C' (0.44 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Bay of Biscay
North East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D34 cruise track — d34track.pdf (00 MB) 
Measurements 
Physical oceanography 
Water bottle stationsDescription: T surface only
CTD stationsQuantity: number of stations = 47
Current metersQuantity: 4
Description: moorings; 106 days
Surface drifters/drifting buoysDescription: drogues
Other physical oceanographic measurementsDescription: shear spar records
Meteorology 
Upper air observations
Incident radiation
Occasional standard measurements
Other meteorological measurementsDescription: tracking of smoke trails
Other meteorological measurementsDescription: sea and swell
Other meteorological measurementsDescription: "locate" wind obs.
Geology and geophysics 
Multi-beam echosounding
Magnetic measurements