RRS John Murray JM5/80 (B/5/80)
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM5/80 (B/5/80) |
| Cruise period | 1980-06-19 — 1980-06-20 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | To continue a series of cruises to monitor the performance of the Bristol Channel to update the validation of ecosystem model GEMBASE |
| Chief scientist | Michael B Jordan (Institute of Marine Environmental Research, Plymouth) |
| Cruise report |  (0.04 MB) |
| Ocean/sea areas | |
| General | Bristol Channel |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: Cont. surface track 90 n.m. approx. |
| Transparency (eg transmissometer) | Description: Cont. surface track 90 n.m. approx. |
| Chemical oceanography | |
| Nitrate | Description: Cont. surface track 90 n.m. approx. |
| Contamination | |
| Suspended matter | Description: Cont. surface track 90 n.m. approx. |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: Cont. surface track 90 n.m. approx. |
| Phytoplankton | Quantity: number of stations = 8 |
| Zooplankton | Quantity: number of stations = 8 Description: identification,distribution |
| Data held at BODC | |
| Discrete samples | |
| 51 General station with STD/bottles/additional instruments | Nitrite concentration parameters in the water column Salinity of the water column Temperature of the water column Concentration of suspended particulate material in the water column Phaeopigment concentrations in the water column Nitrate concentration parameters in the water column Chlorophyll pigment concentrations in water bodies |
