RV Corystes 0823H
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Corystes (74RY) |
| Cruise identifier | 0823H |
| Cruise period | 2023-05-02 — 2023-05-23 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Ullapool, United Kingdom |
| Purpose | Research |
| Objectives | Objectives (PELAgIO section)
1. Test the SBE911 and CTD carousel at a suitable deeper location on the way to the Firth of Forth. Potentially, somewhere around 57° 1.044’ N 01° 47.77 W. Not attempted due to delayed departure. 2. Deploy UHI mooring (seabed frame with ADCP and echosounder; two pop-up acoustic releases) just outside a 500 m distance of an offshore wind turbine in the Seagreen Offshore Wind Farm (OWF). Achieved 3. Deploy NOC mooring (seabed frame with ADCP, ground line, clump weight and thermistor chain to surface buoyancy) and MSS mooring (AL200 trawlproof frame with ADCP) at a distance of ca. 3 km from OWF, east of the UHI mooring. Achieved 4. Carry out a CTD survey with water sampling along a 30 km rectangle offshore from the mooring locations, stopping every 2 km along the way to perform a CTD deployment and, on selected stations, water sampling from the carousel bottles. Achieved 5. Carry out phytoplankton sampling at a subset of the CTD stations, taking samples from the carousel water bottles. Not attempted (visitor’s task) 6. Run the underway TSG (taking calibration samples for salinity and chlorophyll at selected stations) if available. Achieved – MSS’s TSG used but no fluorescence sensor so no chlorophyll samples required 7. Run the underway EK60 echosounder along the CTD survey track. Achieved 8. Perform a seabird survey during daylight hours along the CTD survey track. Achieved 9. Perform glider CTD calibration casts at selected locations along the CTD survey track. Achieved 10. Carry out sampling at the Stonehaven ecosystem monitoring station if time allows on the way back to Aberdeen. Not required Objectives (Hydro section) 1. Goldeneye station standard sampling (Priority 1). Achieved 2. Perform hydrographic sampling along the JONSIS long term monitoring section in the northern North Sea (Priority 1). Achieved 3. Recover and re-deploy two ADCPs (NWSD and NWSE: one RDI Longranger and one Nortek Signature 100, respectively, with SBE37 T and C sensors; Seaguard RCM to be added to NWSD mooring) on single string moorings at positions on Fair Isle – Munken (FIM) section (Priority 1). Not achieved due to weather conditions 4. Perform hydrographic sampling along the long term monitoring Faroe-Shetland Channel Fair Isle – Munken (FIM) section in UK EEZ (Priority 1). Not achieved due to weather conditions 5. Carry out a line of CTD stations in Loch Ewe between the mouth of the loch and the metocean buoy position (Priority 1). Achieved 6. Deploy a mooring consisting of two Seaguards and two SBE37+DOs, with a surface marker and bottom acoustic release in Loch Ewe (Priority 1). Achieved 7. Collect main section of Loch Ewe data buoy from a mooring point set up by Jane Grant (Priority 1). Achieved 8. Run the thermosalinograph throughout the survey, if available (Priority 1). Achieved 9. Additional sampling: 1) Take zooplankton net samples in the Loch Ewe CTD transect; 2) Deploy the weeHoloCam at all Loch Ewe CTD transect. Achieved Extra work listed below will be performed if time allows, Priority 2 and 3 tasks are not listed in order of importance and the sequence will be determined depending on time/location/weather 10. If time allows, carry out a grid of CTD stations in Loch Ewe (Priority 2). Achieved 11. If weather/time permits conduct CTD sections on the west coast, from the coastline up to the edge of the continental shelf (“Shelf” sections) (Priority 2). Not achieved due to weather conditions 12. If weather/time permits conduct CTD sections in the Minch (for sheltering from bad Atlantic weather, Priority 3). Achieved 13. If weather/time permits conduct CTD stations following the Ellet line transect (Priority 3). Not attempted due to weather conditions. 14. [Not on the programme] Repeat Loch Broom stations with extended outer loch coverage Achieved 15. [Not on the programme] Recover the south of Arran (Clyde) metocean buoy. Achieved 16. [Not on t |
| Chief scientist | Alejandro Gallego (Marine Scotland Aberdeen Marine Laboratory), Helen Smith (University of Aberdeen, Oceanlab) |
| Cruise programme |  (0.56 MB) |
| Cruise report | (1.63 MB) |
| Ocean/sea areas | |
| General | North Sea North East Atlantic Ocean (limit 40W) Unknown |
| Specific | Firth of Forth, northern North Sea, Faroe-Shetland Channel, Loch Ewe. Firth of Clyde. |
