Cruise inventory

RRS John Murray JM10/79 (B/4/79)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM10/79 (B/4/79)
Cruise period1979-07-15 — 1979-07-18
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
Objectives1. To continue a series of cruises to monitor the performance of the Bristol Channel region to update the validation of the ecosystem model GEMBASE.
2. To monitor the performance of the major benthic macrofauna species comprising the Venus community in Carmarthen Bay. Objective not met because samples were collected from the Carmarthen Bay plankton station, not the benthic station.
Chief scientistNigel R Collins (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM10/79 (B/4/79) cruise report john_murray10_79.pdf — access key 'C' (0.08 MB) 
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM10/79 (B/4/79) cruise track — trk2325.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: continuous surface measurements.240 miles approx.
Transparency (eg transmissometer)Description: continuous surface measurements.240 miles approx.
Chemical oceanography 
PhosphateQuantity: number of stations = 90
Total - PQuantity: number of stations = 90
NitrateDescription: continuous surface measurements.240 miles approx.
NitriteQuantity: number of stations = 90
SilicateQuantity: number of stations = 90
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: continuous surface measurements.240 miles approx.
PhytoplanktonQuantity: number of stations = 94
ZooplanktonQuantity: number of stations = 25
Description: identification,distribution,monitoring
ZoobenthosQuantity: number of stations = 2
Data held at BODC 
Discrete samples 
189  General station with STD/bottles/additional instrumentsChlorophyll pigment concentrations in water bodies
Salinity of the water column
Concentration of suspended particulate material in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column