RRS John Murray JM4A/76
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM4A/76 |
| Cruise period | 1976-04-02 — 1976-04-13 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Objectives | FLEX/JONSDAP 76 |
| Chief scientist | Bob Williams (Institute of Marine Environmental Research, Plymouth) |
| Project | JONSDAP 76 (FLEX) |
| Cruise report |  (0.13 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | |
| Bathythermograph | Quantity: number of profiles = 7 |
| Water bottle stations | Quantity: number of stations = 7 |
| Subsurface temperature and salinity measurements | |
| Optics (eg underwater light levels) | |
| Chemical oceanography | |
| Phosphate | Quantity: number of stations = 7 |
| Nitrate | Quantity: number of stations = 7 |
| Nitrite | Quantity: number of stations = 7 |
| Silicate | Quantity: number of stations = 7 |
| Biology and fisheries | |
| Primary productivity | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 7 |
| Particulate organic matter (inc POC, PON) | |
| Phytoplankton | Quantity: number of stations = 7 |
| Zooplankton | Quantity: number of samples = 19 Description: survey:population,biomass determination etc. |
| Meteorology | |
| Routine standard measurements |
