Cruise inventory

RRS John Murray JM3/67 Leg 2

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM3/67 Leg 2
Cruise period1967-09-15 — 1967-10-02
StatusCompleted
Port of departureLisbon, Portugal
Port of returnPlymouth, United Kingdom
PurposeResearch
ObjectivesTwo projects to be carried out:

1. An air-sea interaction investigation, involving a detailed study of temperature and salinity structure in the surface layer in relation to meteorological parameters.

2. An invesitgation of two Mediterranean water features:
a) double peaks in temperature and salinity profiles;
b) step-function changes in temperature and salinity at the lower boundary of Meditteranean water.
Chief scientistMalcolm R Howe (University of Liverpool Department of Oceanography)
Cruise reportRRS John Murray JM3/67 Leg 2 cruise report john_murray3_67.pdf — access key 'C' (0.25 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS John Murray JM3/67 Leg 2 cruise track — john_murray3_67trk.pdf (00 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of experiments = 2
Description: salinity-temperature-depth probe lowered 1500m every 3 hours to study any changes occuring in the layers; every hour probe lowered to 100m to study small scale surface layer changes
CTD stationsQuantity: number of stations = 3
Description: Hytech salinity-temperature-depth probe
Surface drifters/drifting buoysQuantity: number of recoveries = 1
Description: marker buoy
Surface drifters/drifting buoysQuantity: number of deployments = 1
Description: marker buoy deployed
Neutrally buoyant floatsQuantity: number of recoveries = 2
Description: floats
Neutrally buoyant floatsQuantity: number of deployments = 2
Description: floats
Other physical oceanographic measurementsQuantity: number of stations = 12
Description: locate and study stratified layers
Other physical oceanographic measurementsQuantity: number of deployments = 2
Description: parachute drogue
Other physical oceanographic measurementsQuantity: number of recoveries = 2
Description: drogues