RRS Discovery D111B

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD111B
Cruise period1980-07-08 — 1980-07-30
Port of departureHalifax, Canada
Port of returnSt. John's, Canada
ObjectivesThe principal objective of the cruise was to undertake a comparative study of the continental margin around the Grand Banks with that off Western Europe by means of an examination of the structural and sedimentary processes that have shaped the margin off eastern Canada. En route to the area, it was intended to make a further GLORIA traverse of the Nova Scotia margin thus making a mosaic of the GLORIA sonographs obtained from R.V. Starella during October 1979.
Chief scientistDavid G Roberts (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D111B cruise report d111b.pdf (0.53 MB) 
Ocean/sea areas 
GeneralNorth West Atlantic Ocean (limit 40W)
SpecificE & N.E. Grand Banks
Track chartsRRS Discovery D111B cruise track — trk2446.html
Physical oceanography 
Other physical oceanographic measurementsQuantity: number of profiles = 1
Description: sound velocity stations at 43 45 N, 57 23 W
Routine standard measurementsDescription: Met. Office Selected Ship.Also 6 minutes values recorded on m/s and digitally on magnetic tape.
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 3519
Multi-beam echosoundingQuantity: track kilometres = 4763
Long/short range side scan sonarQuantity: track kilometres = 4518
Single channel seismic reflectionQuantity: track kilometres = 1778
Seismic refractionQuantity: number of deployments = 130
Description: Sonobuoys (13 Stations).
Gravity measurements
Magnetic measurements