Cruise inventory

RRS Discovery D61

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD61
Cruise period1974-03-30 — 1974-05-16
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
ObjectivesTo investigate the rates of change in a community structure and the growth and development rates of the mesopelagic fauna south of the Bay of Biscay. The cruise was timed to coincide with the time of the spring bloom when the greatest rates of change in community structure and in growth rates might be expected to occur.

Bottom sampling was carried out on Galicia Bank.

Experiments were carried out on the microstructure of the surface 100m of fluorescence, nutrients, temperature and salinity. Several very deep tows were made down to 4000m with the combination net. Samples were also collected for the SMBA, and material was deep frozen for dry weight and biochemical determination.
Chief scientistMartin V Angel (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D61 cruise report d61.pdf — access key 'C' (1.23 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D61 cruise track — trk1261a.html RRS Discovery D61 cruise track — trk1261b.html
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 13
CTD stationsQuantity: number of stations = 14
Optics (eg underwater light levels)Quantity: 8
Chemical oceanography 
PhosphateQuantity: 10
Total - PQuantity: 10
NitrateQuantity: 10
SilicateQuantity: 10
Trace elementsQuantity: 6
Biology and fisheries 
Primary productivityQuantity: 1
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 4
Particulate organic matter (inc POC, PON)Quantity: 6
Dissolved organic matter (inc DOC)Quantity: 2
ZooplanktonQuantity: 210
NeustonQuantity: 15
NektonQuantity: 218
ZoobenthosQuantity: 8
Mammals and reptiles
Geology and geophysics 
Single-beam echosounding
Data held at BODC 
Series/Profiles 
21  CTD/STD cast
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
2977791974-04-02 19:39  — 1974-04-02 20:30 44° 6' 35" N  12° 58' 54" W  View metadata report for BODC series reference number 297779
2977801974-04-04 20:07  — 1974-04-04 20:54 43° 59' 24" N  13° 16' 11" W  View metadata report for BODC series reference number 297780
2977921974-04-05 22:42  — 1974-04-05 23:54 43° 52' 5" N  12° 49' 5" W  View metadata report for BODC series reference number 297792
2978111974-04-06 04:15  — 1974-04-06 05:33 43° 56' 6" N  12° 42' 42" W  View metadata report for BODC series reference number 297811
2978231974-04-07 14:51  — 1974-04-07 15:39 44° 1' 18" N  12° 45' 35" W  View metadata report for BODC series reference number 297823
2978351974-04-09 05:56  — 1974-04-09 07:01 43° 57' 42" N  12° 54' 6" W  View metadata report for BODC series reference number 297835
2978471974-04-12 10:32  — 1974-04-12 11:24 44° 8' 42" N  12° 43' 59" W  View metadata report for BODC series reference number 297847
2978591974-04-15 18:51  — 1974-04-15 19:34 44° 19' 54" N  13° 2' 17" W  View metadata report for BODC series reference number 297859
2978601974-04-16 07:08  — 1974-04-16 08:25 43° 59' 48" N  13° 9' 36" W  View metadata report for BODC series reference number 297860
2978721974-04-16 21:20  — 1974-04-16 21:32 44° 0' 35" N  12° 43' 54" W  View metadata report for BODC series reference number 297872
2978841974-04-19 18:00  — 1974-04-19 18:50 44° 25' 59" N  12° 51' 54" W  View metadata report for BODC series reference number 297884
2978961974-04-25 09:02  — 1974-04-25 10:06 44° 5' 12" N  12° 44' 5" W  View metadata report for BODC series reference number 297896
2979031974-04-27 08:36  — 1974-04-27 09:42 44° 14' 17" N  12° 45' 18" W  View metadata report for BODC series reference number 297903
2979151974-04-30 12:59  — 1974-04-30 13:35 43° 45' 11" N  12° 50' 23" W  View metadata report for BODC series reference number 297915
2979271974-04-30 16:49  — 1974-04-30 17:54 43° 48' 17" N  12° 44' 12" W  View metadata report for BODC series reference number 297927
2979391974-05-06 07:36  — 1974-05-06 08:34 41° 47' 59" N  11° 4' 41" W  View metadata report for BODC series reference number 297939
2979401974-05-07 00:52  — 1974-05-07 00:58 42° 13' 30" N  11° 26' 48" W  View metadata report for BODC series reference number 297940
2979521974-05-08 02:17  — 1974-05-08 03:22 42° 46' 0" N  11° 57' 24" W  View metadata report for BODC series reference number 297952
2979641974-05-08 04:57  — 1974-05-08 07:11 42° 47' 5" N  11° 58' 0" W  View metadata report for BODC series reference number 297964
2979761974-05-10 06:38  — 1974-05-10 07:04 43° 42' 54" N  13° 12' 42" W  View metadata report for BODC series reference number 297976
2979881974-05-11 23:24  — 1974-05-11 23:46 44° 9' 18" N  13° 16' 41" W  View metadata report for BODC series reference number 297988