Cruise inventory

RRS John Murray JM16/75 (B/11/75)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM16/75 (B/11/75)
Cruise period1975-11-13 — 1975-11-16
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
ObjectivesBristol Channel survey
Chief scientistEric I Hamilton (Institute of Marine Environmental Research, Plymouth)
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM16/75 (B/11/75) cruise track — trk1539.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of measurements = 17
Water bottle stationsQuantity: number of stations = 9
Description: S surface only
Transparency (eg transmissometer)Quantity: number of samples = 16
Current metersDescription: 1 hour
Currents measured from ship driftQuantity: activity duration in days = 3
Sea level (inc. bot. press., inverted echosounder)Quantity: activity duration in hours = 40
Chemical oceanography 
Trace elementsQuantity: number of samples = 17
Contamination 
Suspended matterQuantity: number of samples = 17
Trace metalsQuantity: number of samples = 17
Biology and fisheries 
PhytoplanktonQuantity: number of samples = 2
ZooplanktonQuantity: number of samples = 2
Description: identification,distribution,description
Benthic bacteria/micro-organismsQuantity: number of samples = 14
Meteorology 
Occasional standard measurementsQuantity: number of measurements = 4
Atmospheric chemistryQuantity: number of samples = 4
Description: Air particulates
Other meteorological measurementsDescription: air sea inteface studies
Other meteorological measurementsQuantity: number of observations = 17
Description: sea and swell
Geology and geophysics 
GrabQuantity: number of samples = 2
Description: physical/chemical analysis of sediments
Core - soft bottomQuantity: number of cores = 16
Description: physical/chemical analysis of sediments
In-situ seafloor measurement/samplingQuantity: number of measurements = 18
Description: radioactivity msmnts.