RV G A Reay GAR2/86
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV G A Reay (74GD) |
| Cruise identifier | GAR2/86 |
| Cruise period | 1986-05-14 — 1986-05-24 |
| Status | Completed |
| Port of departure | Dunstaffnage, United Kingdom |
| Port of return | Dunstaffnage, United Kingdom |
| Purpose | Research |
| Objectives | 1. To deploy current meter moorings along the transect at 56 10'N.
2. To obtain vertical CTD profiles in the Firth of Lorn, Firth of Clyde, North Channel amd across the W. Scottish continental shelf augmented by water samples for caesium analysis in order to chart the distribution and record the characteristics of the main water masses. 3. To obtain measurements of nutrient levels, chlorophyll and light attenuation and scattering in order to assess the conditions for primary production and the standing stock of phytoplankton. 4. To measure phytoplankton photosynthetic parameters in a light gradient incubator in order to estimate primary production from chlorophyll and optical data. 5. To obtain samples of phytoplankton and zooplankton for analysis of community composition in the main areas and at various depths. |
| Chief scientist | Jack B L Matthews (Scottish Marine Biological Association) |
| Cruise report |  (0.19 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Specific | West of Scotland (Firths of Lorne, Clyde and North Channel) |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | |
| Water bottle stations | Quantity: number of stations = 90 Description: surface+40 T bottom |
| CTD stations | Quantity: number of stations = 133 Description: CTD casts. |
| Optics (eg underwater light levels) | Quantity: 13 |
| Current meters | Quantity: 6 Description: 6 deployed for later recovery;120 days |
| Chemical oceanography | |
| Nitrate | Quantity: number of stations = 99 |
| Nitrite | Quantity: number of stations = 99 |
| Silicate | Quantity: number of stations = 99 |
| Radioactivity | Quantity: number of stations = 8 Description: water samples for caesium analysis. |
| Biology and fisheries | |
| Primary productivity | Quantity: 3 |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 99 |
| Phytoplankton | Quantity: 7 |
| Zooplankton | Quantity: 21 Description: survey: biomass determination, energy transfers, distribution and population. |
