RRS John Murray JM9/69

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM9/69
Cruise period1969-11-03 — 1969-11-16
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesMain purpose was to comeplete a detailed survey of a system of submarine canyons on the continental slope 250 miles WSW of Lands End.

In the Bristol Channel make a continuous seismic profiling and magnetometer survey and make several E-W traverses in the Celtic Sea using the sparker and magnetometer.

In the submarine canyon area: lay 2 current meters to record bottomr currents; complete the detailed bathymetric survey of the canyon; take a series of grab, core and dredge samples; and record surface sediment features by underwater photography.
Chief scientistDouglas Hamilton (University of Bristol Geology Department)
Cruise reportRRS John Murray JM9/69 cruise report john_murray9_69.pdf (0.27 MB) 
Ocean/sea areas 
GeneralBristol Channel
Celtic Sea
SpecificContinental Slope SW of Land's End
Track chartsRRS John Murray JM9/69 cruise track — john_murray9_69trk.pdf (0.05 MB) 
Geology and geophysics 
Other geological/geophysical measurementsDescription: geophys.instr.