FRV Clupea 0691C
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Clupea (74CU) |
| Cruise identifier | 0691C |
| Cruise period | 1991-04-08 — 1991-04-26 |
| Status | Completed |
| Port of departure | Kyle of Lochalsh, United Kingdom |
| Port of return | Ardrossan, United Kingdom |
| Purpose | Research |
| Objectives | 1. To carry out herring egg surveys at Ballantrae and at South Arran using a "Day" grab, ROV "Sea-sprint" and divers to map the extent of egg deposition and to obtain quantitative samples to provide estimates of egg density and mortality.
2. To use the trawl to sample herring present at Ballantrae and South Arran to obtain data on the age structure of the stock. 3. To service a current meter laid at South Arran, to use a towed CTD to establish temperature and salinity profiles in the area and carry out a variety of hydrographic and other sampling operations at Ballantrae and Arran. |
| Chief scientist | John A Morrison (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory) |
| Cruise report |  (0.12 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Specific | Ballantrae and at South Arran |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of stations = 6 |
| CTD stations | Quantity: number of stations = 1 |
| Chemical oceanography | |
| Oxygen | |
| Other dissolved gases | Description: sulphide |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | |
| Particulate organic matter (inc POC, PON) | |
| Eggs and larvae | Description: divers aqualung |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 853 Description: day grabs for herring eggs |
| Bottom photography | Quantity: number of deployments = 25 Description: rov tv |
