Cruise inventory

RV Cirolana CIR5A/78

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR5A/78
Cruise period1978-05-08 — 1978-05-19
StatusCompleted
Port of departureGrimsby, United Kingdom
Port of returnWorkington, United Kingdom
PurposeResearch
ObjectivesAims:
1. To continue the examination of the distribution of strontium-90, caesium-I34, caesium-137, plutonium-238, plutonium-239/240 and americium-241 in sea water.
2. To determine the suspended load and particle size distribution in sea water and to measure the chlorophyll-a content at selected stations.
3. To collect cores from the bed of the Irish Sea and its approaches.
4. To record the caesium-137 concentration i n sea water using,a radiation probe.
5. To investigate the redox potential, pH, phosphate, iron and manganese
content in interstitial waters and their variation with depth in the sea bed.
6. To continue the work on determination of the oxidation states of plutonium in sea water, sediments and interstitial waters.
7. To complete work on the shipboard concentration technique for the determination of total plutonium in sea water.
8. To measure concentrations of polonium-210, strontium-90 and radium-226 in seawater using a shipboard concentration technique and to collect a few plankton samples for subsequent analysis for polonium-210.

Southern North Sea, Bristol and St George's Channel and the Northern Irish Sea.

A grid of stations - radionuclides, suspended load, salinity, chlorophyll a and temperature, radionuclides in bed sediment and particle size distribution. 1m net to obtain plankton. 3 bed cores for: extraction of interstitial water - Pu+6/Pu+4 ratio; redox potential and pH measure in a core, phosphate, iron and manganese. Gamma-radiation probe to measure caesium-137 in Irish Sea
Chief scientistJohn W Talbot (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR5A/78 cruise report ci05_78.pdf — access key 'C' (0.67 MB) 
Ocean/sea areas 
GeneralNorth Sea
Irish Sea and St. George's Channel
Bristol Channel
Track chartsRV Cirolana CIR5A/78 cruise track — trk2154.html RV Cirolana CIR5A/78 cruise track — trk2154b.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: stations: salinity and temperature measurements
Water bottle stationsDescription: 9 T bottom 49 S bottom
Subsurface temperature and salinity measurementsDescription: stations: salinity and temperature measurements
Chemical oceanography 
PhosphateQuantity: number of cores = 3
Description: measurements of redox potential, pH, manganese, iron in some interstitial waters
Trace elementsQuantity: number of cores = 3
Description: measurements of redox potential, pH, manganese, iron in some interstitial waters
RadioactivityQuantity: number of cores = 3
Description: measurements of redox potential, pH, manganese, iron in some interstitial waters
RadioactivityDescription: stations: radioactivity measurements, radionuclides in the sediment - 134-Cs & 137-Cs (measured by a gamma-radiation probe); also Pu, Am, 90Sr, 226Ra & 210Po
Other chemical oceanographic measurementsQuantity: number of cores = 3
Description: measurements of redox potential, pH, manganese, iron in some interstitial waters
Contamination 
Suspended matterDescription: stations: suspended load samples
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: stations: chlorophyll a samples
PhytoplanktonQuantity: number of hauls = 2
Description: 1m net
Geology and geophysics 
Grab
Core - soft bottom
In-situ seafloor measurement/samplingDescription: stations: radioactivity measurements, radionuclides in the sediment - 134-Cs & 137-Cs (measured by a gamma-radiation probe); also Pu, Am, 90Sr, 226Ra & 210Po
Other geological/geophysical measurementsDescription: particle size analysis