RRS John Murray JM15/74

Cruise summary report

Cruise Info.
Ship name (ship code)	RRS John Murray (74MJ)
Cruise identifier	JM15/74
Cruise period	1974-11-15 — 1974-12-03
Status	Completed
Objectives	15/74 IGS
Chief scientist	J M Miller (Institute of Geological Sciences, Keyworth)
Ocean/sea areas
General	North Sea Irish Sea and St. George's Channel
Measurements
Geology and geophysics
Dredge	Quantity: number of deployments = 24
Grab	Quantity: number of samples = 24 Description: Shipek
Multi-beam echosounding	Quantity: track kilometres = 583
Long/short range side scan sonar	Quantity: track kilometres = 583 Description: MS47
Seismic refraction	Quantity: track kilometres = 583 Description: Sparker
Other geological/geophysical measurements	Quantity: track kilometres = 583 Description: Seabed gammma spectrometry
Other geological/geophysical measurements	Quantity: track kilometres = 583 Description: Pinger