RRS John Murray JM11/73

Cruise summary report

Cruise Info.
Ship name (ship code)	RRS John Murray (74MJ)
Cruise identifier	JM11/73
Cruise period	1973-11-09 — 1973-11-29
Status	Completed
Objectives	IGS,(Bad weather,many instrument breakdowns.)
Chief scientist	J M Miller (Institute of Geological Sciences, Keyworth)
Ocean/sea areas
General	Irish Sea and St. George's Channel
Measurements
Physical oceanography
Geochemical tracers (eg freons)	Quantity: track kilometres = 620 Description: Seabed gamma spectrometry
Geology and geophysics
Dredge	Quantity: number of deployments = 28 Description: Cone
Grab	Quantity: number of samples = 28 Description: Shipek
In-situ seafloor measurement/sampling	Quantity: track kilometres = 620 Description: Sparker
Multi-beam echosounding	Quantity: track kilometres = 620
Long/short range side scan sonar	Quantity: track kilometres = 620 Description: MS47