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RV Corystes COR8/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR8/03
Cruise period2003-06-26 — 2003-07-09
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesThe work was generally aimed at achieving a better understanding of the dynamics of the circulation processes of the Western English Channel. In order to characterise the extent and nature of density driven and seasonal jet-like circulation which acts as a direct and rapid pathway for transport of material. The existence of exotic species in the western Channel region is evidence of the potential pathway from the Bay of Biscay or mouth of the Gironde to the UK and Irish coast. The sampling of Karenia mikimotoi which is of interest due to links to HABs was a specific cruise aim. Additionally to study the structure of the mixing in the bottom region, and for comparisons with models a thermistor chain and ADCPs were deployed for the period between the cruises The principle aims of the cruise were completed successfully.
1. To characterise the hydrographic structure associated with the frontal regions and investigate the transport pathways.
2. To undertake sampling to quantify and map the extent of Karenia mikimotoi (by water samples from CTD Rosette ).
3. Deploy ARGOS drifting buoys to quantify the Lagrangian circulation.
4. Deploy Mooring (ADCP and thermistor chain) to study the mixing processes in the transitional region.
Chief scientistLiam Fernand (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
ProjectA1225
Coordinating bodyDEFRA
Cruise programmeRV Corystes COR8/03 cruise programme cory8_03.pdf  (0.06 MB) 
Cruise reportRV Corystes COR8/03 cruise report cory8_03.pdf (0.40 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Specificwestern English Channel
Track chartsRV Corystes COR8/03 cruise track — cory8_03trk.pdf (0.25 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
Surface measurements underway (T,S)Quantity: activity duration in days = 13
Description: Logged near surface hull PRT and salinity
CTD stationsQuantity: number of stations = 60
Description: CTD, Par, SPM, chlorophyll sensors
Subsurface temperature and salinity measurementsQuantity: track kilometres = 1333.44
Description: Scanfish Undulating towed body CTD,PAR, Chlorophyll
Current profiler (eg ADCP)Quantity: activity duration in days = 13
Description: Underway current profiles VM ADCP
Chemical oceanography 
PhosphateQuantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
PhosphateQuantity: number of stations = 60
Description: Rosette bottles collected on ascent
Total - PQuantity: number of stations = 60
Description: Rosette bottles collected on ascent
NitrateQuantity: number of stations = 60
Description: Rosette bottles collected on ascent
NitrateQuantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
NitriteQuantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
NitriteQuantity: number of stations = 60
Description: Rosette bottles collected on ascent
SilicateQuantity: number of stations = 60
Description: Rosette bottles collected on ascent
SilicateQuantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 156
Description: Near surface samples for sal, Chl, NUTs
PhytoplanktonDescription: Phytoplankton analysis
Moorings, landers, buoys 
Physical oceanography 
Subsurface temperature measurements49° 38' 59" N  3° 30' 0" W — ADCP and thermistor chain
Subsurface temperature measurements49° 28' 59" N  4° 15' 0" W — ADCP and thermistor chain
Current profiler (eg ADCP)49° 38' 59" N  3° 30' 0" W — ADCP and thermistor chain
Instrumented wave measurements49° 28' 59" N  4° 15' 0" W — ADCP and thermistor chain