Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV G A Reay GAR2/86

Cruise summary report

Cruise Info. 
Ship name (ship code)RV G A Reay (74GD)
Cruise identifierGAR2/86
Cruise period1986-05-14 — 1986-05-24
Port of departureDunstaffnage, United Kingdom
Port of returnDunstaffnage, United Kingdom
Objectives1. 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 scientistJack B L Matthews (Scottish Marine Biological Association)
Cruise reportRV G A Reay GAR2/86 cruise report ga_reay2_86.pdf — access key 'C' (0.19 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificWest of Scotland (Firths of Lorne, Clyde and North Channel)
Track chartsRV G A Reay GAR2/86 cruise track — trk3296.html
Physical oceanography 
Surface measurements underway (T,S)
Water bottle stationsQuantity: number of stations = 90
Description: surface+40 T bottom
CTD stationsQuantity: number of stations = 133
Description: CTD casts.
Optics (eg underwater light levels)Quantity: 13
Current metersQuantity: 6
Description: 6 deployed for later recovery;120 days
Chemical oceanography 
NitrateQuantity: number of stations = 99
NitriteQuantity: number of stations = 99
SilicateQuantity: number of stations = 99
RadioactivityQuantity: number of stations = 8
Description: water samples for caesium analysis.
Biology and fisheries 
Primary productivityQuantity: 3
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 99
PhytoplanktonQuantity: 7
ZooplanktonQuantity: 21
Description: survey: biomass determination, energy transfers, distribution and population.