RRS Discovery D145

Cruise summary report

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Cruise Info.

Ship name (ship code)

RRS Discovery (74E3)

Cruise identifier

D145

Cruise period

1984-02-25 — 1984-03-24

Status

Completed

Port of departure

Gibraltar, Gibraltar

Port of return

Leixoes, Portugal

Objectives

1. Observe the structure of the upper ocean at the end of winter at two sites with different seasonal characteristics. Observe the physical and biological changes at those sites at the start of the seasonal heating cycle.
The sites chosen were around 40 15'N, 15 0'W and 45 45'N, 13 40'W. At the southern site the mixed layer depth was 150-200m, and the Drifting Spar moved northwards in a frontal structure at an average speed of over 14 cm/s. At the northern site the mixed layer was 250-300m deep, and the spar moved east then south at 10-15 cm/s.
2. Deploy two surface and two subsurface moorings for recovery on Cruise 146. Deploy a deepsea tide gauge for a deep water trial. Test shipborne surface meteorological instrumentation and provide surface fluxes for objective (1).
All these objectives were accomplished, but the surface and subsurface moorings set at the northern site were subsequently lost on Cruise 146.

Chief scientist

Raymond T Pollard (Institute of Oceanographic Sciences Wormley Laboratory)

Cruise report

(0.97 MB)

Ocean/sea areas

General

North East Atlantic Ocean (limit 40W)
Strait of Gibraltar (Mediterranean Sea)

Specific

E. Atlantice

Track charts

Measurements

Physical oceanography

Surface measurements underway (T,S)

CTD stations

Quantity: number of stations = 38
Description: includes some yoyos

Subsurface temperature and salinity measurements

Quantity: track kilometres = 4926.32
Description: seasoar

Subsurface temperature measurements

Quantity: 48
Description: no.of days;4 deployed,only 1 recovered

Current meters

Quantity: 4
Description: 39cm deployed,29cm recovered;11x48/18x5 days

Sea level (inc. bot. press., inverted echosounder)

Quantity: activity duration in days = 46
Description: experimental deep sea tide gauge

Instrumented wave measurements

Meteorology

Upper air observations

Quantity: 28

Routine standard measurements

Other meteorological measurements

Geology and geophysics

Multi-beam echosounding

Quantity: track kilometres = 7408

Data held at BODC

Get data

Series/Profiles

66 CTD/STD cast

Reference numbers
Dissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Horizontal platform movement
Electrical conductivity of the water column

[Show series]

[Hide series]

BODC id	Date/Time	Location
289847	1984-02-27 06:36 — 1984-02-27 07:41	37° 30' 0" N 11° 31' 18" W
289940	1984-03-05 02:35 — 1984-03-05 03:17	45° 27' 0" N 13° 16' 18" W
289964	1984-03-05 19:27 — 1984-03-05 21:03	45° 48' 36" N 13° 39' 0" W
290129	1984-03-14 06:00 — 1984-03-14 06:41	43° 53' 32" N 13° 58' 22" W
290178	1984-03-21 19:36 — 1984-03-21 20:10	40° 49' 54" N 14° 56' 12" W
290283	1984-03-03 05:50 — 1984-03-03 06:54	46° 30' 0" N 13° 13' 58" W
290363	1984-03-06 04:56 — 1984-03-06 05:47	45° 45' 10" N 13° 7' 12" W
290399	1984-03-11 22:00 — 1984-03-11 22:46	45° 41' 35" N 12° 41' 59" W
290480	1984-03-14 14:21 — 1984-03-14 16:05	43° 11' 23" N 14° 24' 36" W
290492	1984-03-18 22:49 — 1984-03-18 23:37	40° 43' 0" N 15° 14' 48" W
290547	1984-03-21 22:57 — 1984-03-21 23:39	40° 47' 30" N 14° 46' 59" W
289976	1984-03-05 22:28 — 1984-03-05 23:03	45° 53' 42" N 13° 38' 30" W
289988	1984-03-06 04:17 — 1984-03-06 04:56	45° 45' 11" N 13° 7' 11" W
290142	1984-03-18 22:07 — 1984-03-18 22:45	40° 43' 0" N 15° 14' 35" W
290166	1984-03-19 06:06 — 1984-03-19 06:44	40° 39' 35" N 14° 50' 42" W
290210	1984-03-22 06:07 — 1984-03-22 07:57	40° 51' 42" N 14° 56' 59" W
290234	1984-02-26 22:07 — 1984-02-27 00:46	37° 8' 35" N 10° 58' 12" W
290271	1984-03-03 00:47 — 1984-03-03 01:33	46° 52' 41" N 13° 3' 11" W
290455	1984-03-13 22:20 — 1984-03-13 23:49	43° 37' 11" N 14° 15' 11" W
290013	1984-03-10 14:27 — 1984-03-11 01:11	45° 46' 59" N 12° 56' 17" W
290050	1984-03-11 21:21 — 1984-03-11 22:00	45° 41' 48" N 12° 42' 6" W
290074	1984-03-12 03:40 — 1984-03-12 04:23	45° 26' 32" N 13° 16' 50" W
290086	1984-03-12 12:07	43° 21' 17" N 14° 19' 46" W
290222	1984-03-23 17:42 — 1984-03-23 17:54	41° 7' 18" N 10° 27' 47" W
290295	1984-03-03 13:32 — 1984-03-03 14:22	45° 42' 10" N 13° 43' 51" W
290375	1984-03-10 13:59 — 1984-03-10 14:25	45° 47' 5" N 12° 56' 12" W
290418	1984-03-12 04:23 — 1984-03-12 05:09	45° 26' 32" N 13° 16' 50" W
289872	1984-03-03 00:00 — 1984-03-03 00:47	46° 52' 48" N 13° 3' 17" W
289896	1984-03-03 12:58 — 1984-03-03 13:32	45° 41' 42" N 13° 44' 17" W
289915	1984-03-03 23:14 — 1984-03-04 02:44	46° 19' 18" N 14° 28' 48" W
290025	1984-03-11 03:36	45° 41' 35" N 13° 1' 1" W
290049	1984-03-11 08:30 — 1984-03-11 17:30	45° 40' 54" N 13° 1' 23" W
290062	1984-03-11 23:36 — 1984-03-12 00:11	45° 38' 59" N 12° 45' 18" W
290105	1984-03-13 20:47 — 1984-03-13 22:15	43° 37' 25" N 14° 15' 0" W
290258	1984-02-29 01:10 — 1984-02-29 04:13	40° 14' 24" N 15° 0' 24" W
290338	1984-03-05 03:16 — 1984-03-05 04:00	45° 25' 28" N 13° 16' 41" W
290387	1984-03-11 07:59 — 1984-03-11 08:30	45° 41' 35" N 13° 1' 1" W
290406	1984-03-12 00:11 — 1984-03-12 00:40	45° 38' 48" N 12° 44' 24" W
290431	1984-03-13 12:49 — 1984-03-13 13:26	43° 21' 35" N 14° 19' 48" W
290467	1984-03-14 03:11 — 1984-03-14 03:45	43° 45' 47" N 14° 5' 48" W
290479	1984-03-14 06:41 — 1984-03-14 07:26	43° 53' 32" N 13° 58' 18" W
289927	1984-03-04 06:27 — 1984-03-04 07:04	46° 22' 54" N 13° 52' 23" W
289939	1984-03-04 11:10 — 1984-03-04 11:42	46° 4' 59" N 13° 32' 23" W
289952	1984-03-05 07:09 — 1984-03-05 07:43	45° 7' 36" N 13° 34' 59" W
290037	1984-03-11 07:21 — 1984-03-11 07:59	45° 40' 59" N 13° 1' 0" W
290117	1984-03-14 02:24 — 1984-03-14 03:04	43° 45' 43" N 14° 4' 59" W
290130	1984-03-14 12:45 — 1984-03-14 14:14	43° 11' 40" N 14° 24' 58" W
290209	1984-03-22 00:57 — 1984-03-22 01:33	40° 45' 24" N 14° 35' 59" W
290523	1984-03-19 06:44 — 1984-03-19 07:28	40° 39' 40" N 14° 50' 21" W
290559	1984-03-22 01:41 — 1984-03-22 02:21	40° 44' 35" N 14° 31' 5" W
289859	1984-02-27 08:52 — 1984-02-27 10:37	37° 32' 44" N 11° 32' 5" W
289884	1984-03-03 04:50 — 1984-03-03 05:50	46° 29' 30" N 13° 16' 36" W
289903	1984-03-03 21:45 — 1984-03-03 22:35	46° 0' 35" N 14° 5' 23" W
290154	1984-03-19 01:12 — 1984-03-19 01:44	40° 40' 59" N 15° 5' 23" W
290246	1984-02-27 10:31 — 1984-02-27 15:18	37° 32' 35" N 11° 32' 12" W
290302	1984-03-03 22:36 — 1984-03-03 23:14	46° 0' 43" N 14° 5' 2" W
290314	1984-03-04 07:04 — 1984-03-04 07:50	46° 23' 59" N 13° 52' 18" W
290351	1984-03-05 23:09 — 1984-03-05 23:43	45° 53' 42" N 13° 38' 17" W
290511	1984-03-19 01:44 — 1984-03-19 02:15	40° 41' 6" N 15° 5' 12" W
289860	1984-02-28 23:29 — 1984-02-29 01:10	40° 14' 31" N 15° 0' 28" W
290098	1984-03-13 13:26 — 1984-03-13 16:49	43° 29' 35" N 14° 16' 53" W
290001	1984-03-10 13:29 — 1984-03-10 13:59	45° 47' 5" N 12° 56' 30" W
290191	1984-03-21 22:19 — 1984-03-21 22:54	40° 47' 30" N 14° 46' 54" W
290326	1984-03-04 11:45 — 1984-03-04 12:20	46° 4' 47" N 13° 32' 23" W
290443	1984-03-13 16:49 — 1984-03-13 17:31	43° 29' 35" N 14° 17' 3" W
290535	1984-03-21 20:15 — 1984-03-21 20:51	40° 49' 47" N 14° 56' 23" W

Resources

RRS Discovery D145

Cruise summary report

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BODC holdings

EDMED