RRS John Murray JM7/68
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM7/68 |
| Cruise period | 1968-06-13 — 1968-06-19 |
| Status | Completed |
| Port of departure | Liverpool, United Kingdom |
| Port of return | Liverpool, United Kingdom |
| Purpose | Research |
| Objectives | 1. Carry out diffusion experients.
2.Observe environmental conditions in which diffusion occurs, in particular the temperature and salinity distribution and currents. 3. Study the distribution of pigments in phytoplankton in various conditions. 4. Obtain water samples from a series of stations for trace element analysis |
| Chief scientist | Kenneth F Bowden (University of Liverpool Department of Oceanography) |
| Cruise report |  (0.22 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | Irish Sea |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: number of stations = 4 |
| Subsurface temperature and salinity measurements | Quantity: number of stations = 4 |
| Current meters | Quantity: number of deployments = 1 Description: Roberts buoy with Plessey current meter |
| Current meters | Quantity: number of recoveries = 1 Description: Roberts buoy with Plessey current meter |
| Current profiler (eg ADCP) | Quantity: number of stations = 2 Description: DRCM, measurements every 30 minutes |
| Other physical oceanographic measurements | Quantity: number of stations = 1 Description: water sampling |
| Chemical oceanography | |
| Other chemical oceanographic measurements | Quantity: number of experiments = 6 Description: dye diffusion |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 4 Description: determination |
