RRS Discovery D33_1

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD33_1
Cruise period1970-04-14 — 1970-05-01
Port of departureBarry, United Kingdom
Port of returnPonta Delgada, Portugal
Objectives1) Seismic surveying of proposed sites for JOIDES deep sediment drilling in the Hatton-Rockall Basin and Rockall Trough

2) To obtain geophysical and geological information about King's Trough and its relationship to seafloor spreading occuring to the west on the mid-Atlantic Ridge.
Chief scientistAnthony S Laughton (National Institute of Oceanography)
Cruise reportRRS Discovery D33_1 cruise report d33.pdf (0.86 MB)  RRS Discovery D33_1 cruise report d33_data_report.pdf (3.11 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificRockall; King's Trough
Track chartsRRS Discovery D33_1 cruise track — d33track.pdf (0.09 MB) 
Physical oceanography 
Water bottle stationsDescription: T surface only.(measurements over two legs)
Other physical oceanographic measurementsQuantity: number of profiles = 2
Description: sound velocity stations. (measurements over two legs)
Incident radiationDescription: (measurements over two legs)
Occasional standard measurementsDescription: (measurements over two legs)
Geology and geophysics 
DredgeQuantity: number of deployments = 9
Description: (measurements over two legs)
Core - rockQuantity: 3
Description: (measurements over two legs)
Bottom photographyQuantity: 1
Description: (measurements over two legs)
Multi-beam echosoundingDescription: (measurements over two legs)
Single channel seismic reflectionQuantity: track kilometres = 1284
Description: (measurements over two legs)
Seismic refractionQuantity: 3
Description: (measurements over two legs)
Magnetic measurementsDescription: (measurements over two legs)