RV Corella 14/78
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Corella (74CX) |
| Cruise identifier | 14/78 |
| Cruise period | 1978-10-19 — 1978-11-06 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Research |
| Objectives | 1. "Routine" monitoring of sewage sludge disposal grounds off Exeter and
Plymouth; to collect sediment samples for physical and chemical analysis and fish and benthos for chemical analysis by a programme of grabbing and trawling. 2. Initial monitoring of sewage sludge disposal ground off Falmouth: to collect sediment samples for biological, physical, chemical and microbiological analysis by a programme of grabbing. 3. To compare the performance of the HRS vibro-corer, the MAFF (Hamilton Dock) mini-corer and the Day grab in a variety of sediments in Liverpool Bay at approximately ten anchor stations. The sediment samples will also be used to evaluate various microbiological procedures and for the estimation of coprastanol (a human faecal-sterol). 4. "Intensive" monitoring of sewage sludge disposal ground in Liverpool Bay: to collect sediment samples for physical, chemical and microbiological analysis and for biological analysis of benthos and also for the estimation of coprastanol and to collect fish and benthos by trawling and grabbing for chemical analysis. 5. To retain diseased fish from all trawling stations for Dr D. Alderman (Weymouth) and to undertake additional trawling for the same purpose as necessary. 6. To study the dispersion of discharged sewage sludge in Liverpool Bay by tracking with a towed transmissometer in the wake of dumping vessels. 7. To conduct one or more 26 h hydrographic stations in the Bristol Channel, and, if opportunity arises, conduct dispersion studies in the wake of dumping vessels as in Aim 6. 8. To collect water and sediment samples in the English Channel, southern North Sea and in the vicinity of the Ekofisk oilfield for hydrocarbon analysis as part of the Baseline hydrocarbon survey. 9. To collect sediment samples from the Southwold experimental ground dredging area by grabbing for biological and physical analysis. |
| Chief scientist | Michael S Rolfe (Ministry of Agriculture, Fisheries and Food Burnham Laboratory) |
| Cruise report |  (0.32 MB) |
| Ocean/sea areas | |
| General | English Channel Bristol Channel Celtic Sea |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Subsurface temperature and salinity measurements | |
| Transparency (eg transmissometer) | |
| Current meters | |
| Contamination | |
| Trace metals | Quantity: number of samples = 99 Description: relates to heavy metal in sediments,fish and benthos |
| Petroleum residues | Quantity: number of samples = 23 |
| Petroleum residues | Quantity: number of samples = 23 Description: petroleum residues |
| Biology and fisheries | |
| Pelagic bacteria/micro-organisms | Quantity: number of samples = 73 Description: faecal |
| Zoobenthos | Quantity: number of samples = 73 Description: distribution,monitoring |
| Demersal fish | Quantity: number of hauls = 5 |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 117 Description: including 23 for petr.residues;physical/chemical analysis of sediments |
