FRV Clupea 0999C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0999C
Cruise period1999-06-08 — 1999-06-13
Port of departureFraserburgh, United Kingdom
Port of returnKyle of Lochalsh, United Kingdom
ObjectivesOne of a series of data collection cruises to obtain data from a new multibeam sonar on fish school shape dynamics. Part of an EU funded project called AVITIS (cope:fair CT96-1717).
Main Objectives:
1. To calibrate vertical echosounders.
2. To collect data on fish schools with the multibeam sonarand vertical echosounders similtaneously.
3. To collect sonar and echosounder data across a sea surface temperature anamoly (front).
Calibration successful. Data on school shape obtained south of Sound of Islay. Front at mouth of Clyde surveyed with 1 transect.
Chief scientistPaul G Fernandes (Fisheries Research Services Aberdeen Marine Laboratory)
Coordinating bodyInstitut de Recherches pour le Developpement, France
Cruise reportFRV Clupea 0999C cruise report 0999c.pdf (1.11 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificFirth of Clyde, Sound of Islay, North Channel
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 3
Description: Continuous SST and salinity measurements with Seabird thermosalinograph
Water bottle stationsQuantity: number of samples = 24
Description: Water samples from fish house seawater pump, for comparison with CTD/ thermosalinograph data.
CTD stationsQuantity: number of profiles = 9
Description: Single vertical cast with seabird 19 CTD, for density structure of front
Geology and geophysics 
Single-beam echosoundingQuantity: data volume in gigabytes = .215
Description: Single beam echosounder data @ 38and 120 kHz from a Simrad EK500 echosounder, for comparison with multibeam sonar data
Multi-beam echosoundingQuantity: data volume in gigabytes = 11
Description: Mulitbeam sonar data @ 4.55 kHz from a Reson Seabat 6012 sonar - for input to 3-D reconstruction of fish school shape/ structure