RRS Frederick Russell FR6/84

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Frederick Russell (74GG)
Cruise identifierFR6/84
Cruise period1984-04-07 — 1984-04-13
Port of departureFalmouth, United Kingdom
Port of returnFalmouth, United Kingdom
Objectives1. To obtain values for the sediment community oxygen demand in cores obtained by, and incubated in, the SMBA multiple corer.
2. To obtain a series of SMBA multiple core samples at 500m intervals from 500m to 4500m for meiofaunal abundance and diversity studies.
3. To obtain a series of SMBA multiple cores samples at 1300m for further studies of the vertical distribution of foraminiferans and komoki.
4. To obtain SMBA multicore samples at 1300m for diversity and small scale distribution of harpacticoid copepods.
5. To obtain a series of SMBA multiple core samples for further study of horizontal distributions of foraminiferans, xenophyophores and komoki.
6. To deploy a string of sediment traps designed to provide data on vertical fluxes of organic material into the deep sea.
7. To grapple for Bathysnap deployed on Cruise 517 (Challenge 6/83), and which subsequently failed to release.
8. To deploy Bathysnaps to record arrival on the bottom of phytodetritus following the spring phytoplankton boom.
9. To perform photosledge hauls on the Pheronema ground at 1300m.
10. To take epibenthic sledge hauls at 1300m for Pheronema and Dorhynchus and on the upper slope for Munida.
11. To monitor phytoplankton abundance using a continuously running fluorometer.
12. To obtain echosounder records for future incorporation onto bathymetric charts.
Chief scientistMichael H Thurston (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Frederick Russell FR6/84 cruise report frederick_russell_6_84.pdf (0.46 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificPorcupine Bight
Track chartsRRS Frederick Russell FR6/84 cruise track — trk3099.html
Chemical oceanography 
Other dissolved gasesDescription: N2
Other chemical oceanographic measurementsDescription: carbon
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)
ZoobenthosQuantity: number of stations = 5
Description: survey:foraminifora taxonomy,distribution,O2 consumption
Other biological/fisheries measurementDescription: bottom photography
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 450