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Cruise inventory

RRS James Clark Ross JR19970914 (AMT5, JR23)

Cruise summary report

Cruise inventory

Cruise Info.

Ship name (ship code)

RRS James Clark Ross (74JC)

Cruise identifier

JR19970914 (AMT5, JR23)

Cruise period

1997-09-14 — 1997-10-17

Status

Completed

Port of departure

Grimsby, United Kingdom

Port of return

Stanley, Falkland Islands (Malvinas)

Objectives

The Atlantic Meridional Transect (AMT) Program exploits the passage of the Royal Research Ship (RRS) James Clark Ross (JCR) latitudinally through the Atlantic Ocean between the United Kingdom and the Falkland Islands (approximately 52° N to 52° S) in support of British Antarctic Survey (BAS) research activities in the Antarctic and its environs. In September, the JCR sails southward, sampling the boreal fall and the austral spring; the following April it returns to the UK sampling the austral fall and the boreal spring.

There are three objectives of the AMT Program. The first is to derive an improved understanding of the links between biogeochemical processes, biogenic gas exchange, air-sea interactions, and the effects on, and the responses of, oceanic ecosystems to climate change. The second is to investigate the functional roles of biological particles and processes that influence ocean colour in ecosystem dynamics. The Program relates directly to algorithm development and the validation of remotely-sensed observations of ocean colour. Because the Sea-viewing Wide-Field-of-view Sensor (SeaWiFS) instrument achieved operational status during the cruise (on 18th September). AMT-5 was designated the SeaWiFS data during the first 100 days of operations. This third objective involved in the near-real time reporting of in situ light and prigment obersvations to the Sea WiFS Project, so the performance of the satellite sensor could be determined.

Chief scientist

James Aiken (Plymouth Marine Laboratory)

Project

AMT

Cruise report

(1.56 MB)

Ocean/sea areas

General

North Atlantic Ocean
South Atlantic Ocean

Measurements

Physical oceanography

Water bottle stations

Description: Water bottle samples were collected. No. of samples not noted.

CTD stations

Quantity: number of measurements = 1
Description: CTD data was gathered from several stations. No. of stations sampled no noted.

Optics (eg underwater light levels)

Description: Optical data was gathered from various stations. No. of samples not noted.

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

Description: Underway data samples were taken. Pigments and zooplankton samples were collected. No. of samples not noted.

Zooplankton

Description: Underway data samples were taken. Pigments and zooplankton samples were collected. No. of samples not noted.

Data held at BODC

Series/Profiles

27 Bottle station

Phosphate concentration parameters in the water column
Quality control flags
Silicate concentration parameters in the water column
Nitrate concentration parameters in the water column
Nitrite concentration parameters in the water column
Reference numbers
Vertical spatial coordinates

[Show series]

[Hide series]

BODC id	Date/Time	Location
1095897	1997-09-22 08:27	35° 26' 49" N 19° 31' 49" W
1095904	1997-09-17 16:22	48° 40' 22" N 8° 26' 56" W
1095916	1997-09-18 10:22	47° 59' 1" N 13° 12' 18" W
1095928	1997-09-19 10:26	47° 10' 14" N 18° 28' 35" W
1095941	1997-09-20 10:22	42° 50' 38" N 19° 57' 32" W
1095953	1997-09-22 10:19	35° 26' 42" N 19° 31' 24" W
1095965	1997-09-25 14:04	32° 18' 39" N 17° 13' 15" W
1095977	1997-09-26 11:28	29° 2' 56" N 20° 58' 15" W
1095989	1997-09-27 11:26	24° 8' 18" N 20° 59' 57" W
1095990	1997-09-28 11:26	19° 43' 28" N 20° 31' 46" W
1096004	1997-09-30 11:28	10° 55' 22" N 20° 52' 13" W
1096016	1997-10-01 11:25	7° 1' 37" N 22° 28' 9" W
1096028	1997-10-03 11:04	0° 46' 21" S 25° 39' 47" W
1096041	1997-10-05 12:00	8° 58' 1" S 29° 6' 53" W
1096053	1997-10-06 11:53	12° 52' 36" S 30° 42' 18" W
1096065	1997-10-07 11:58	16° 41' 8" S 32° 21' 44" W
1096077	1997-10-08 12:08	20° 39' 43" S 34° 13' 28" W
1096089	1997-10-09 12:03	23° 54' 8" S 37° 17' 13" W
1096090	1997-10-10 11:53	27° 41' 28" S 40° 58' 50" W
1096108	1997-10-12 13:06	35° 29' 4" S 48° 51' 40" W
1096121	1997-10-13 12:33	38° 50' 9" S 51° 54' 48" W
1096133	1997-10-15 12:34	46° 2' 46" S 56° 41' 42" W
1096145	1997-10-16 12:56	49° 47' 36" S 57° 39' 42" W
1096157	1997-10-02 11:24	2° 48' 55" N 24° 9' 50" W
1096169	1997-09-21 10:25	38° 42' 59" N 20° 0' 41" W
1096170	1997-10-04 12:02	4° 47' 7" S 27° 22' 15" W
1096182	1997-10-14 13:07	42° 14' 30" S 54° 28' 37" W

31 CTD/STD cast

Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Raw fluorometer output
Temperature of the water column
Salinity of the water column
Vertical spatial coordinates
Chlorophyll pigment concentrations in the water column

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BODC id	Date/Time	Location
1069669	1997-09-16 14:23	50° 25' 39" N 1° 40' 13" W
1069670	1997-09-17 16:16	48° 40' 22" N 8° 26' 56" W
1069682	1997-09-18 10:11	47° 59' 1" N 13° 12' 18" W
1069694	1997-09-19 10:14	47° 10' 14" N 18° 28' 36" W
1069701	1997-09-20 10:10	42° 50' 39" N 19° 57' 33" W
1069713	1997-09-21 10:11	38° 42' 58" N 20° 0' 42" W
1069725	1997-09-22 10:07	35° 26' 42" N 19° 31' 23" W
1069737	1997-09-25 13:59	32° 18' 39" N 17° 13' 15" W
1069749	1997-09-26 11:11	29° 2' 56" N 20° 58' 14" W
1069750	1997-09-27 11:07	24° 8' 18" N 20° 59' 57" W
1069762	1997-09-28 11:07	19° 43' 28" N 20° 31' 46" W
1069774	1997-09-30 11:09	10° 55' 22" N 20° 52' 13" W
1069786	1997-10-01 11:10	7° 1' 37" N 22° 28' 9" W
1069798	1997-10-02 11:09	2° 48' 55" N 24° 9' 50" W
1069805	1997-10-03 10:44	0° 46' 21" S 25° 39' 47" W
1069817	1997-10-04 11:43	4° 47' 7" S 27° 22' 15" W
1069829	1997-10-05 11:40	8° 58' 1" S 29° 6' 53" W
1069830	1997-10-06 11:37	12° 52' 36" S 30° 42' 17" W
1069842	1997-10-07 11:37	16° 41' 8" S 32° 21' 44" W
1069854	1997-10-08 11:47	20° 39' 43" S 34° 13' 28" W
1069866	1997-10-09 11:47	23° 54' 8" S 37° 17' 13" W
1069878	1997-10-10 11:36	27° 41' 28" S 40° 58' 50" W
1069891	1997-10-11 12:13	31° 37' 14" S 44° 52' 11" W
1069909	1997-10-12 12:45	35° 29' 4" S 48° 51' 40" W
1069910	1997-10-13 12:18	38° 50' 9" S 51° 54' 49" W
1069922	1997-10-14 12:41	42° 14' 30" S 54° 28' 37" W
1069934	1997-10-14 17:06	42° 48' 37" S 54° 52' 11" W
1069946	1997-10-15 12:14	46° 2' 46" S 56° 41' 42" W
1069958	1997-10-15 17:15	46° 32' 34" S 56° 45' 0" W
1069971	1997-10-16 12:44	49° 47' 35" S 57° 39' 43" W
1069983	1997-10-16 16:18	49° 47' 59" S 58° 13' 52" W

Discrete samples

34 CTD frame plus rosette sampler

Particulate total and organic nitrogen concentrations in the water column
Primary production in the water column
Metadata parameters
Phosphate concentration parameters in the water column
Density of the water column
Particulate total and organic carbon concentrations in the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Phaeopigment concentrations in the water column
Raw fluorometer output
Silicate concentration parameters in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Carotenoid pigment concentrations in the water column
Raw light meter output
Salinity of the water column
Organosulphur species concentration parameters in the water column
Nitrite concentration parameters in the water column
Chlorophyll pigment concentrations in the water column

134 Expendable Bathythermograph

Temperature of the water column

144 Sample taken from ship's non-toxic supply

Particulate total and organic nitrogen concentrations in the water column
Particulate total and organic carbon concentrations in the water column
Phaeopigment concentrations in the water column
Carotenoid pigment concentrations in the water column
Organosulphur species concentration parameters in the water column
Chlorophyll pigment concentrations in the water column