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

Cruise inventory

RV Cirolana CIR4B/87

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR4B/87
Cruise period1987-04-21 — 1987-04-30
Port of departureHolyhead, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To measure the physical and mechanical properties of the muddy sediments of the northeast Irish Sea to a depth of approximately 1m to assess the uniformity of the seabed, using in situ measurements and recovered cores. Some core samples will be tested on board, while others will be returned to the laboratory for additional testing. Ship-board operations will include:
(a) Measurement of in situ density, using transmission and back-scatter densimeters.
(b) Recovery of sediment samples using the Kaston and Reineck corers. The Kaston cores will be sub-sampled with acrylic liners, as will the Reineck cores if on-board testing is possible. Core samples will be sealed for transport.
(c) Spot density measurements will be made on the cores with a Paar density guage and samples sealed for subsequent analysis of water content, Atterberg limits, particle size distribution and mineralogy.
(d) The fall cone and shear vane techniques will be used to measure sediment shear strength at horizons 200-400mm apart through the cores.
(e) Restricuted flow consolidation tests will be made on samples 200mm apart from a small number of cores.
2. To collect samples of seawater for trace element analysis.
Chief scientistDennis S Woodhead (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR4B/87 cruise report ci4b_87.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea
Track chartsRV Cirolana CIR4B/87 cruise track — trk3370.html
Chemical oceanography 
RadioactivityQuantity: number of samples = 30
Description: water samples taken for trace metal analysis.
Other chemical oceanographic measurementsQuantity: number of profiles = 14
Description: density profiles of seabed
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 62