RV Cirolana CIR1/94
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Cirolana (74CZ) |
| Cruise identifier | CIR1/94 |
| Cruise period | 1994-01-06 — 1994-01-19 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Research |
| Objectives | 1. To study the transport, feeding and condition of herring larvae in the eastern English Channel and southern North Sea.
2. To quantify the availability of food organisms for herring larvae. 3. To make continuous measurements of sub-surface chlorophyll 'a' fluourescence using the pumped seawater supply. To take discrete surface and sub-surface samples and do shipboard analysis of chlorophyll. 4. To trial the Focus Instruments Optical Plankton counter mounted on the dual LHPR and compare the results from the two systems on horizontal tows within the study area. 5. To calibrate the external flowmeter in its new position against an external flowmeter in the old position on both the 76cm and 53cm HSTNs. 6. To make relevant observations and run the UCNW primary production model on a daily basis as a trial. |
| Chief scientist | John H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Cruise report |  (0.15 MB) |
| Ocean/sea areas | |
| General | English Channel |
| Specific | Eastern English Channel/Southern North Sea |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: activity duration in days = 13 Description: +B02 and solar irradiance |
| Water bottle stations | Quantity: number of stations = 88 Description: S only 75 surface only |
| CTD stations | Quantity: number of stations = 8 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: activity duration in days = 13 Description: +B02 and solar irradiance |
| Phytoplankton | Quantity: number of stations = 88 Description: for quantification of available food organisms for herring larvae |
| Zooplankton | Quantity: number of stations = 88 Description: Optical Plankton Counter on LHPR - herring larvae |
| Demersal fish | Quantity: number of hauls = 20 |
