RV Corystes COR10/99

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR10/99
Cruise period1999-10-06 — 1999-10-11
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To survey the seabed using sidescan around the proposed Minipod and Loggerpot locations to detect obstructions and assess seabed morphology.
2. To undertake sediment surveys using the Day grab to collect sediment samples for calibration of optical suspended load sensors.
3. To deploy 2 Minipods and 3 Loggerpots in a line NE from the Hastings Shingle Bank dredge area.
4. To determine lateral and longitudinal dispersion and composition of the plume at 5m using a towed body passing through the sediment plume generated by the dredger.
5. To determine the current regime around Hastings Shingle bank by undertaking a 13 hr ADCP section across the site.
6. To undertake a sidescan sonar and biotope survey of the area as part of the Biotope survey project (at night).
Chief scientistJonathon Mark Rees (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Corystes COR10/99 cruise report co10_99.pdf (0.96 MB) 
Ocean/sea areas 
GeneralEnglish Channel
SpecificHastings Shingle Bank
Physical oceanography 
Subsurface temperature and salinity measurementsQuantity: number of deployments = 3
Description: Loggerpots deployed in a line NE from the Hastings dredge area and sediments samples were collected at each site.
Current profiler (eg ADCP)Quantity: activity duration in hours = 13
Description: ACDP survey
Other physical oceanographic measurementsQuantity: number of deployments = 2
Description: Minipods and Guard buoys deployed in a line NE from the Hastings dredge area and sediments samples were collected at each site.
Suspended matterQuantity: number of profiles = 2
Description: CTD for calibration of optical sensors with rosette to obtain suspended sediment samples
Suspended matterQuantity: number of samples = 100
Description: Tadpole towed body containing the LISST particle size analyser, the CEFAS micrologger and also a pumped water supply to the surface. Samples taken for suspended load and particle size analysis
Geology and geophysics 
GrabQuantity: number of stations = 16
Description: Duplicate Hamon Grab sediment samples taken to characterise the seabed in terms of sediment composition and biological community
Bottom photographyQuantity: number of stations = 16
Description: TV pictures of the Loggerpot and Minipod stations
Long/short range side scan sonarQuantity: track kilometres = 277.8
Description: 60 miles of sidescan sonar data collected from an intensive survey box (100% coverage), 90 miles from a wider regional survey