FRV Clupea 0796C
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Clupea (74CU) |
| Cruise identifier | 0796C |
| Cruise period | 1996-04-26 — 1996-05-17 |
| Status | Completed |
| Port of departure | Fraserburgh, United Kingdom |
| Port of return | Ardrossan, United Kingdom |
| Purpose | Research |
| Objectives | 1. To recover current meter moorings from two locations in the North Channel, deployed during FRV Clupea Cruise 0596C.
2. To map the seabed bathymetry and sediment types in the Beaufort's Dyke explosives disposal site, and in adjacent areas in the North Channel, Firth of Clyde and Irish Sea, using RoxAnn. 3. To undertake a side-scan sonar survey of the Beaufort's Dyke explosives disposal site survey area, to determine the distribution of man-made debris on the surface of the sea bed. 4. To undertake a magnetometer survey of the Beaufort's Dyke explosives disposal site survey area, to complement the side-scan sonar investigations. 5. To collect seabed sediment samples from selected locations within the Beaufort's Dyke explosives disposal site survey area, and from dredge spoil disposal sites in the Irish Sea, for particle size, chemical and biological (macrobenthic infauna) analyses. 6. To undertake underwater television studies in the vicinity of the current meter mooring locations, to confirm the suitability of the area for the establishment of a dredge spoil disposal site. 7. To undertake underwater television studies at selected near-shore locations within the Beaufort's Dyke explosives disposal site survey area, to complement the side-scan sonar investigations. 8. To undertake a trawl survey in the vicinity of the current meter mooring locations, to confirm the suitability of the area for the establishment of a dredge spoil disposal site. 9. To undertake trawl surveys at the southern end of the North Channel and in the Irish Sea, to collect samples of representative species for chemical analysis. |
| Chief scientist | Derek Saward (Scottish Office Agriculture Environment and Fisheries Department Aberdeen Marine Laboratory) |
| Cruise report |  (0.17 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland Irish Sea and St. George's Channel North East Atlantic Ocean (limit 40W) |
| Specific | NE Atlantic, North Channel, Beauforts Dyke, Firth of Clyde, Irish Sea |
| Measurements | |
| Contamination | |
| Trace metals | Quantity: number of hauls = 5 Description: Trawl hauls |
| Biology and fisheries | |
| Demersal fish | Quantity: number of hauls = 5 Description: Trawl hauls |
| Crustaceans | Quantity: number of hauls = 1 Description: Nephrops. |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 186 Description: Day grabs |
| Long/short range side scan sonar | Quantity: activity duration in days = 9 Description: Side scan sonar |
| Magnetic measurements | Quantity: activity duration in days = 11 Description: magnetometer survey |
| Other geological/geophysical measurements | Quantity: activity duration in days = 9 Description: RoxAnn survey |
| Other geological/geophysical measurements | Quantity: number of deployments = 29 Description: Sites underwater TV survey |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Current meters | 55° 1' 0" N 5° 13' 59" W — Recovered 3 ACM 28/4/96 |
