RRS John Murray JM12/79 (B/5/79)
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM12/79 (B/5/79) |
| Cruise period | 1979-08-07 — 1979-08-16 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Plymouth, United Kingdom |
| Purpose | Research |
| Objectives | 1) To continue a series of cruises to monitor the performance of the Bristol Channel
2) To measure processes involved in the turnover of nitrogenous nutrients in a mixed water column in Carmarthen Bay |
| Chief scientist | Ian Joint (Institute of Marine Environmental Research, Plymouth) |
| Cruise report |  (0.10 MB) |
| Ocean/sea areas | |
| General | Bristol Channel |
| Track charts | (0.02 MB) |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: continuous recording,240 miles approx. |
| Transparency (eg transmissometer) | Description: continuous recording,240 miles approx. |
| Chemical oceanography | |
| Nitrate | Description: continuous recording,240 miles approx. |
| Contamination | |
| Suspended matter | Description: continuous recording,240 miles approx. |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: continuous recording,240 miles approx. |
| Particulate organic matter (inc POC, PON) | Quantity: number of stations = 30 |
| Zooplankton | Quantity: number of stations = 24 Description: identification,distribution,energy transfers |
| Zoobenthos | Quantity: number of stations = 1 |
| Data held at BODC | |
| Discrete samples | |
| 204 General station with STD/bottles/additional instruments | Nitrite concentration parameters in the water column Phosphate 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 Silicate concentration parameters in the water column Phaeopigment concentrations in the water column Nitrate concentration parameters in the water column Chlorophyll pigment concentrations in water bodies |
