RRS John Murray JM7B/75
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM7B/75 |
| Cruise period | 1975-05-15 — 1975-05-21 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Barra, United Kingdom |
| Objectives | JM;7B;75 |
| Chief scientist | Robert H Bruce (Institute of Marine Environmental Research, Plymouth) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | St George's Channel |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Bathythermograph | Quantity: number of profiles = 29 |
| Water bottle stations | Quantity: number of stations = 15 |
| CTD stations | Quantity: number of stations = 9 |
| Subsurface temperature and salinity measurements | Quantity: track kilometres = 1667 |
| Chemical oceanography | |
| Phosphate | Quantity: number of stations = 15 |
| Nitrate | Quantity: number of stations = 15 |
| Nitrite | Quantity: number of stations = 15 |
| Silicate | Quantity: number of stations = 15 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 15 |
| Particulate organic matter (inc POC, PON) | Quantity: number of stations = 15 |
| Zooplankton | Quantity: track kilometres = 1667 Description: distribution, population |
