Cruise inventory

RRS Discovery D92

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD92
Cruise period1978-04-04 — 1978-05-23
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnLisbon, Portugal
PurposeResearch
ObjectivesPrimary aims:
1. To collect a comprehensive series of midwater samples throughout the total water column including samples from within 5-20m of the sea bed at two stations at depths of about 2000m and 4000m respectively in the Porcupine Sea Bight region.
2. To collect benthic samples using a variety of samplers at these same stations to complement the midwater sampling so an assessment of the total water column ecosystem could be attempted.
3. Initial midwater studies at 42N 17W for facilitate the designing of the joint biological and physical mesoscale experiment planned for 1980/1.
Secondary aims:
4. To collect a series of oblique samples along 13W and 17W to investigate the possible existence of a zoogeographical boundary between 42N and 50N.
5. To make observations on the physical structure of the water in the Porcupine Sea Bight area.
6. To make studies on the phytoplankton during the cruise by fluorometry, particle-counting and direct study of phytoplankton.
7. To develop the multiple RMT 1+8 system.
8. To use the in situ light meter mounted on the net monitor to study the relationship between light levels and the diurnal migration patters of zooplankton and nekton.
9. To collect a repeat series of hauls at 1000m to investigate a) the patchiness of organisms at such depth and b) whether these organisms undergo diurnal vertical migration.
10. To collect further benthic samples from as many depths as possible between the edge of the continental shelf and the abyssal plain in the Porcupine Sea Bight Area.
Chief scientistMartin V Angel (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D92 cruise report d92.pdf — access key 'C' (1.18 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D92 cruise track — trk1959a.html RRS Discovery D92 cruise track — trk1959b.html RRS Discovery D92 cruise track — trk1959c.html RRS Discovery D92 cruise track — trk1959d.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 2778
CTD stationsQuantity: number of stations = 52
Optics (eg underwater light levels)Quantity: 3
Chemical oceanography 
OxygenQuantity: 39
NitrateQuantity: 39
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 12
Description: discrete,1000nm cont.
PhytoplanktonQuantity: 3
ZooplanktonQuantity: 143
Description: population studies
SestonQuantity: 12
Description: discrete,500nm cont.
NektonQuantity: 286
ZoobenthosQuantity: 17
Gear researchQuantity: number of hauls = 37
Meteorology 
Routine standard measurements
Data held at BODC 
Series/Profiles 
28  CTD/STD cast
Electrical conductivity of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
2892331978-04-27 14:46  — 1978-04-27 16:00 44° 58' 59" N  13° 2' 35" W  View metadata report for BODC series reference number 289233
2892451978-04-28 01:30  — 1978-04-28 02:52 44° 0' 6" N  13° 2' 12" W  View metadata report for BODC series reference number 289245
2892571978-04-28 11:22  — 1978-04-28 12:33 42° 59' 48" N  13° 1' 54" W  View metadata report for BODC series reference number 289257
2892691978-04-28 20:44  — 1978-04-28 21:48 42° 0' 24" N  12° 59' 48" W  View metadata report for BODC series reference number 289269
2892701978-05-06 05:09  — 1978-05-06 06:52 49° 39' 47" N  13° 59' 5" W  View metadata report for BODC series reference number 289270
2892821978-05-09 02:49  — 1978-05-09 04:10 50° 0' 6" N  17° 0' 17" W  View metadata report for BODC series reference number 289282
2892941978-05-09 19:18  — 1978-05-09 20:32 49° 0' 54" N  17° 0' 54" W  View metadata report for BODC series reference number 289294
2893011978-05-10 05:38  — 1978-05-10 06:56 47° 58' 54" N  17° 0' 42" W  View metadata report for BODC series reference number 289301
2893131978-05-10 16:38  — 1978-05-10 17:49 46° 59' 30" N  16° 59' 53" W  View metadata report for BODC series reference number 289313
2893251978-05-11 02:27  — 1978-05-11 03:40 46° 0' 0" N  16° 59' 35" W  View metadata report for BODC series reference number 289325
2898111978-04-26 13:17  — 1978-04-26 14:35 46° 31' 23" N  12° 58' 59" W  View metadata report for BODC series reference number 289811
2898231978-04-26 18:12  — 1978-04-26 19:22 46° 37' 23" N  13° 3' 29" W  View metadata report for BODC series reference number 289823
2898351978-04-27 13:04  — 1978-04-27 14:27 45° 0' 6" N  13° 0' 42" W  View metadata report for BODC series reference number 289835
2893371978-05-11 13:56  — 1978-05-11 15:07 44° 59' 48" N  16° 59' 53" W  View metadata report for BODC series reference number 289337
2893491978-05-12 00:21  — 1978-05-12 01:36 43° 59' 53" N  17° 0' 24" W  View metadata report for BODC series reference number 289349
2893501978-05-12 11:56  — 1978-05-12 13:14 43° 0' 0" N  16° 59' 35" W  View metadata report for BODC series reference number 289350
2893621978-05-13 03:39  — 1978-05-13 04:52 41° 56' 12" N  16° 48' 47" W  View metadata report for BODC series reference number 289362
2893741978-05-21 10:17  — 1978-05-21 12:54 42° 10' 18" N  16° 46' 29" W  View metadata report for BODC series reference number 289374
2896991978-04-07 14:13  — 1978-04-07 14:45 50° 55' 0" N  12° 16' 18" W  View metadata report for BODC series reference number 289699
2897061978-04-07 15:44  — 1978-04-07 16:31 50° 54' 53" N  12° 15' 35" W  View metadata report for BODC series reference number 289706
2897181978-04-08 21:38  — 1978-04-08 22:18 51° 7' 23" N  12° 1' 23" W  View metadata report for BODC series reference number 289718
2897311978-04-10 09:23  — 1978-04-10 09:39 50° 50' 12" N  12° 17' 6" W  View metadata report for BODC series reference number 289731
2897431978-04-15 01:18  — 1978-04-15 01:49 49° 57' 0" N  14° 14' 41" W  View metadata report for BODC series reference number 289743
2897551978-04-24 15:46  — 1978-04-24 16:31 49° 11' 48" N  12° 58' 59" W  View metadata report for BODC series reference number 289755
2897671978-04-25 08:40  — 1978-04-25 10:28 49° 3' 47" N  13° 3' 6" W  View metadata report for BODC series reference number 289767
2897791978-04-25 13:11  — 1978-04-25 14:24 49° 3' 53" N  12° 52' 59" W  View metadata report for BODC series reference number 289779
2897801978-04-25 15:32  — 1978-04-25 16:34 49° 4' 47" N  12° 43' 48" W  View metadata report for BODC series reference number 289780
2897921978-04-25 23:52  — 1978-04-26 00:58 48° 0' 11" N  13° 0' 29" W  View metadata report for BODC series reference number 289792