RRS Challenger CH126A

Cruise summary report

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Cruise Info.

Ship name (ship code)

RRS Challenger (74CH)

Cruise identifier

CH126A

Cruise period

1996-04-11 — 1996-04-26

Status

Completed

Port of departure

Southampton, United Kingdom

Port of return

Fairlie, United Kingdom

Purpose

Research

Objectives

To measure the physical sedimentological, chemical and biological exchanges across the continental shelf. First part of two leg cruise. A first leg of 6th cruise in a series of 7 cruises for the LOIS SES. The aim of SES is to estimate exchanges between the continental shelf and the ocean in western Scottish waters. The main objective of Leg A was to recover and deploy moored current meters, temperature recorders, recording optical instruments and sediment traps in water depths between 140 and 1500m. A second objective was to use CTDs, either lowered from the ship or in the towed undulator, SeaSoar, to measure water properties in the SES region. This includes phytoplankton and other particles.

Chief scientist

Paul Tett (Napier University School of Life Sciences)

Project

LOIS - SES

Coordinating body

UK Natural Environment Research Council (NERC)

Cruise report

(1.72 MB)

Ocean/sea areas

General

North East Atlantic Ocean (limit 40W)

Specific

NW Scotland, LOIS-SES area 56-57N, 7-10W

Track charts

(0.07 MB)

Measurements

Physical oceanography

Surface measurements underway (T,S)

Quantity: activity duration in days = 13

Water bottle stations

Quantity: number of profiles = 45
Description: calibration samples, 2-12 water bottles per cast, 5m to seabed-5m

CTD stations

Quantity: number of profiles = 45
Description: CTD with O2, fluorescence, red-beam transmittance, up/downwelling irradiance

Subsurface temperature and salinity measurements

Quantity: number of track lines = 12
Description: SeaSoar sections

Transparency (eg transmissometer)

Quantity: number of profiles = 45
Description: CTD with O2, fluorescence, red-beam transmittance, up/downwelling irradiance

Optics (eg underwater light levels)

Quantity: number of profiles = 45
Description: CTD with O2, fluorescence, red-beam transmittance, up/downwelling irradiance

Optics (eg underwater light levels)

Quantity: number of profiles = 6

Current meters

Quantity: number of stations = 6

Current profiler (eg ADCP)

Quantity: activity duration in days = 13
Description: shipborne ADCP

Chemical oceanography

Oxygen

Quantity: number of profiles = 45
Description: CTD with O2, fluorescence, red-beam transmittance, up/downwelling irradiance

Contamination

Suspended matter

Quantity: number of profiles = 14
Description: vertical profiles of particulates with 'snow camera'

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of samples = 200

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of profiles = 45
Description: CTD with O2, fluorescence, red-beam transmittance, up/downwelling irradiance

Particulate organic matter (inc POC, PON)

Quantity: number of samples = 125
Description: frozen samples for POC, PON analysis

Moorings, landers, buoys

Physical oceanography

Subsurface temperature measurements

56° 27' 0" N 8° 56' 59" W — S140 met. buoy/toroid buoy plus CM, thermistor chain, ADCP deployed

Subsurface temperature measurements

56° 27' 0" N 9° 4' 0" W — S300 mooring depl.

Transparency (eg transmissometer)

56° 43' 0" N 9° 25' 0" W — mooring deployed

Transparency (eg transmissometer)

56° 38' 59" N 9° 35' 59" W — P1500 mooring deployed

Current meters

56° 43' 0" N 9° 25' 0" W — mooring deployed

Current meters

56° 36' 0" N 8° 55' 59" W — N140 mooring deployed

Current meters

56° 27' 0" N 9° 4' 0" W — S300 mooring depl.

Current meters

56° 37' 0" N 9° 1' 0" W — N300 CM mooring deployed

Current meters

56° 27' 0" N 9° 3' 0" W — S200 toroid/U-mooring with CMs depl.

Current meters

56° 27' 0" N 8° 56' 59" W — S140 met. buoy/toroid buoy plus CM, thermistor chain, ADCP deployed

Current meters

56° 27' 0" N 8° 56' 59" W — S140, current meter mooring, ADCP, BPR recovered

Current meters

56° 28' 0" N 9° 10' 0" W — (H72) S700 mooring recovered/redepl.

Current meters

56° 38' 59" N 9° 35' 59" W — P1500 mooring deployed

Current profiler (eg ADCP)

56° 27' 0" N 9° 7' 0" W — S600 ADCP recovered/redepl.

Current profiler (eg ADCP)

56° 27' 0" N 8° 56' 59" W — S140, current meter mooring, ADCP, BPR recovered

Current profiler (eg ADCP)

56° 27' 0" N 8° 56' 59" W — S140 met. buoy/toroid buoy plus CM, thermistor chain, ADCP deployed

Current profiler (eg ADCP)

56° 27' 0" N 9° 4' 59" W — S400 ADCP recovered

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

56° 27' 0" N 8° 56' 59" W — S140, current meter mooring, ADCP, BPR recovered

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

56° 36' 0" N 8° 55' 59" W — N140 BPR recovered/redeployed

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

56° 43' 0" N 9° 25' 0" W — mooring deployed

Phytoplankton pigs (eg chlorophyll, fluorescence)

56° 38' 59" N 9° 35' 59" W — P1500 mooring deployed

Sediment traps

56° 43' 0" N 9° 25' 0" W — mooring deployed

Sediment traps

56° 43' 0" N 9° 25' 0" W — N1500 mid-water sediment trap recovered

Meteorology

Other meteorological measurements

56° 27' 0" N 8° 56' 59" W — S140 met. buoy/toroid buoy plus CM, thermistor chain, ADCP deployed

Data held at BODC

Get data

Series/Profiles

1 Acoustic doppler current profiler

Date and time
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters

[Show series]

Date and time
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters

[Hide series]

BODC id	Date/Time	Location	Doc.
477209	1996-04-24 08:34:59 — 1996-07-12 06:34:59	56° 27' 31" N 8° 57' 38" W

41 Bottle station

Reference numbers
Vertical spatial coordinates
Phaeopigment concentrations in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies

[Show series]

Reference numbers
Vertical spatial coordinates
Phaeopigment concentrations in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location
1675590	1996-04-19 00:31	56° 27' 22" N 9° 18' 29" W
1675737	1996-04-23 09:21	56° 35' 49" N 8° 56' 19" W
1675829	1996-04-24 22:18	56° 26' 15" N 9° 3' 57" W
1675842	1996-04-25 01:16	56° 18' 46" N 8° 45' 20" W
1675946	1996-04-17 16:45	56° 28' 21" N 9° 10' 16" W
1675589	1996-04-18 22:25	56° 27' 31" N 9° 12' 49" W
1675657	1996-04-15 16:01	56° 28' 14" N 8° 57' 56" W
1675805	1996-04-24 10:12	56° 27' 4" N 9° 2' 24" W
1675854	1996-04-25 03:16	56° 9' 20" N 8° 30' 14" W
1675878	1996-04-25 06:36	55° 56' 3" N 7° 59' 56" W
1675958	1996-04-17 21:40	56° 25' 34" N 8° 58' 32" W
1675694	1996-04-22 23:06	56° 37' 2" N 8° 56' 8" W
1675909	1996-04-25 09:37	55° 48' 13" N 7° 29' 57" W
1675608	1996-04-19 04:51	56° 27' 25" N 9° 39' 9" W
1675633	1996-04-21 13:49	56° 39' 7" N 9° 37' 34" W
1675750	1996-04-23 19:24	56° 37' 55" N 9° 1' 41" W
1675891	1996-04-25 08:11	55° 52' 6" N 7° 44' 59" W
1675577	1996-04-18 03:43	56° 26' 29" N 9° 9' 42" W
1675669	1996-04-22 02:27	56° 41' 17" N 9° 10' 51" W
1675725	1996-04-23 02:36	56° 37' 7" N 9° 5' 8" W
1675762	1996-04-23 23:51	56° 26' 15" N 8° 59' 10" W
1675774	1996-04-24 01:19	56° 26' 50" N 9° 3' 4" W
1675621	1996-04-19 13:34	56° 26' 57" N 9° 4' 2" W
1675701	1996-04-23 00:25	56° 36' 55" N 9° 0' 22" W
1675910	1996-04-25 11:18	55° 44' 12" N 7° 14' 34" W
1675983	1996-04-17 23:56	56° 25' 54" N 9° 5' 4" W
1675553	1996-04-15 15:02	56° 27' 20" N 9° 1' 53" W
1675565	1996-04-18 01:48	56° 27' 15" N 9° 6' 14" W
1675713	1996-04-23 01:23	56° 36' 49" N 9° 1' 23" W
1675749	1996-04-23 11:26	56° 35' 44" N 8° 54' 48" W
1675786	1996-04-24 02:24	56° 26' 51" N 9° 6' 35" W
1675798	1996-04-24 03:43	56° 26' 39" N 9° 4' 24" W
1675830	1996-04-24 23:35	56° 24' 52" N 8° 55' 16" W
1675934	1996-04-17 11:54	56° 28' 9" N 8° 56' 57" W
1675971	1996-04-17 23:02	56° 25' 42" N 9° 3' 2" W
1675645	1996-04-21 22:12	56° 43' 7" N 9° 24' 18" W
1675670	1996-04-22 04:54	56° 39' 20" N 9° 6' 29" W
1675682	1996-04-22 10:17	56° 43' 3" N 9° 24' 37" W
1675817	1996-04-24 20:22	56° 25' 18" N 9° 19' 31" W
1675866	1996-04-25 05:11	56° 0' 1" N 8° 15' 7" W
1675922	1996-04-25 12:39	55° 39' 44" N 6° 59' 23" W

1 Bottom pressure sensor tide gauge

Date and time
Temperature of the water column
Sea level

[Show series]

Date and time
Temperature of the water column
Sea level

[Hide series]

BODC id	Date/Time	Location	Doc.
442744	1996-04-23 13:30:26 — 1996-08-03 07:15:26	56° 36' 12" N 8° 55' 21" W

45 CTD/STD cast

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

[Show series]

[Hide series]

BODC id	Date/Time	Location
858081	1996-04-19 03:56	56° 27' 25" N 9° 39' 9" W
858197	1996-04-24 20:08	56° 25' 18" N 9° 19' 31" W
858370	1996-04-18 15:31	56° 29' 3" N 9° 8' 48" W
858425	1996-04-24 02:02	56° 26' 51" N 9° 6' 35" W
858228	1996-04-25 01:09	56° 18' 46" N 8° 45' 20" W
858394	1996-04-22 01:52	56° 41' 16" N 9° 10' 51" W
858401	1996-04-23 01:10	56° 36' 49" N 9° 1' 23" W
858413	1996-04-23 19:09	56° 37' 55" N 9° 1' 40" W
858437	1996-04-23 02:15	56° 37' 7" N 9° 5' 8" W
858093	1996-04-19 13:22	56° 26' 57" N 9° 4' 3" W
858100	1996-04-21 21:15	56° 43' 7" N 9° 24' 18" W
858204	1996-04-24 22:09	56° 26' 15" N 9° 3' 57" W
858020	1996-04-17 21:33	56° 25' 34" N 8° 58' 32" W
858148	1996-04-23 09:14	56° 35' 49" N 8° 56' 19" W
858357	1996-04-17 16:25	56° 28' 22" N 9° 10' 16" W
858044	1996-04-18 01:27	56° 27' 15" N 9° 6' 14" W
858124	1996-04-22 09:21	56° 43' 3" N 9° 24' 37" W
858185	1996-04-24 10:04	56° 27' 4" N 9° 2' 24" W
858382	1996-04-19 10:05	56° 28' 10" N 9° 3' 0" W
858056	1996-04-18 03:12	56° 26' 30" N 9° 9' 42" W
858112	1996-04-22 04:24	56° 39' 19" N 9° 6' 29" W
858173	1996-04-24 01:09	56° 26' 50" N 9° 3' 4" W
858216	1996-04-24 23:29	56° 24' 52" N 8° 55' 16" W
858345	1996-04-17 05:40	56° 27' 4" N 9° 12' 53" W
858369	1996-04-17 23:39	56° 25' 54" N 9° 5' 4" W
858068	1996-04-18 22:05	56° 27' 31" N 9° 12' 49" W
858136	1996-04-23 00:15	56° 36' 55" N 9° 0' 22" W
858161	1996-04-23 23:44	56° 26' 15" N 8° 59' 10" W
858032	1996-04-17 22:53	56° 25' 42" N 9° 3' 2" W
858241	1996-04-25 03:10	56° 9' 20" N 8° 30' 15" W
858253	1996-04-25 05:04	56° 0' 1" N 8° 15' 7" W
857956	1996-04-25 09:34	55° 48' 13" N 7° 29' 57" W
857993	1996-04-15 15:51	56° 28' 14" N 8° 57' 56" W
857944	1996-04-25 06:29	55° 56' 3" N 7° 59' 57" W
858019	1996-04-17 11:44	56° 28' 9" N 8° 56' 57" W
857968	1996-04-25 11:14	55° 44' 12" N 7° 14' 34" W
858007	1996-04-17 11:22	56° 27' 56" N 8° 57' 4" W
857981	1996-04-15 14:56	56° 27' 20" N 9° 1' 53" W
858265	1996-04-18 23:53	56° 27' 22" N 9° 18' 29" W
858290	1996-04-23 11:19	56° 35' 44" N 8° 54' 49" W
858277	1996-04-21 12:51	56° 39' 7" N 9° 37' 34" W
858289	1996-04-22 22:58	56° 37' 2" N 8° 56' 7" W
858321	1996-04-25 08:05	55° 52' 5" N 7° 45' 0" W
858333	1996-04-25 12:37	55° 39' 44" N 6° 59' 23" W
858308	1996-04-24 03:24	56° 26' 39" N 9° 4' 24" W

4 Fluorometers

Date and time
Raw fluorometer output
Chlorophyll pigment concentrations in water bodies

[Show series]

Date and time
Raw fluorometer output
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location
476095	1996-04-22 17:02:56 — 1996-07-09 14:02:56	56° 42' 33" N 9° 24' 31" W
476151	1996-04-17 15:02:57 — 1996-07-07 16:02:57	56° 27' 47" N 8° 57' 30" W
476187	1996-04-18 14:02:56 — 1996-05-09 20:02:56	56° 27' 42" N 9° 9' 44" W
476243	1996-04-21 17:02:56 — 1996-07-08 20:02:56	56° 39' 4" N 9° 35' 35" W

21 Paddle wheel current meter

Moored instrument depth
Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Horizontal velocity of the water column (currents)
Electrical conductivity of the water column

[Show series]

[Hide series]

BODC id	Date/Time	Location
438874	1996-04-17 15:15 — 1996-07-28 11:45	56° 27' 47" N 8° 57' 30" W
438917	1996-04-18 14:15 — 1996-07-30 11:45	56° 27' 42" N 9° 9' 44" W
439122	1996-04-23 13:15 — 1996-08-03 08:45	56° 36' 17" N 8° 55' 54" W
439411	1996-04-17 15:30 — 1996-07-28 11:30	56° 27' 47" N 8° 57' 30" W
439423	1996-04-19 13:30 — 1996-05-10 13:30	56° 27' 17" N 9° 3' 51" W
439005	1996-04-19 12:45 — 1996-05-10 13:45	56° 27' 17" N 9° 3' 51" W
438929	1996-04-17 19:15 — 1996-07-28 10:15	56° 27' 47" N 8° 57' 30" W
438942	1996-04-18 14:15 — 1996-07-30 11:45	56° 27' 42" N 9° 9' 44" W
438930	1996-04-18 14:15 — 1996-07-30 12:15	56° 27' 42" N 9° 9' 44" W
439017	1996-04-18 14:15 — 1996-07-30 11:45	56° 27' 42" N 9° 9' 44" W
439110	1996-04-23 13:15 — 1996-08-03 08:45	56° 36' 17" N 8° 55' 54" W
439459	1996-04-18 14:30 — 1996-06-13 22:30	56° 27' 42" N 9° 9' 44" W
439472	1996-04-22 15:30 — 1996-08-02 06:30	56° 42' 33" N 9° 24' 31" W
439435	1996-04-21 17:30 — 1996-08-02 05:30	56° 29' 4" N 9° 35' 35" W
436289	1996-04-19 12:45 — 1996-05-10 13:45	56° 27' 17" N 9° 3' 51" W
439091	1996-04-24 13:45 — 1996-05-07 05:15	56° 27' 8" N 9° 2' 58" W
439109	1996-04-23 13:15 — 1996-08-03 08:45	56° 36' 17" N 8° 55' 54" W
436216	1996-04-19 14:15 — 1996-05-10 13:45	56° 27' 17" N 9° 3' 51" W
436290	1996-04-24 13:45 — 1996-05-07 04:45	56° 27' 8" N 9° 2' 58" W
436241	1996-04-19 12:45 — 1996-05-10 13:45	56° 27' 17" N 9° 3' 51" W
436308	1996-04-24 13:45 — 1996-05-07 04:45	56° 27' 8" N 9° 2' 58" W

1 Pumped water sample

Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

[Show series]

Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location	Doc.
1690562	1996-04-15 11:10 — 1996-04-25 17:10	55° 13' 57" N 9° 27' 26" W — 56° 43' 58" N 5° 50' 6" W

2 Savonius rotor current meter

Date and time
Temperature of the water column
Horizontal velocity of the water column (currents)

[Show series]

Date and time
Temperature of the water column
Horizontal velocity of the water column (currents)

[Hide series]

BODC id	Date/Time	Location	Doc.
439134	1996-04-23 16:30 — 1996-05-09 14:30	56° 37' 26" N 9° 1' 18" W
439146	1996-04-23 16:30 — 1996-05-09 14:50	56° 37' 26" N 9° 1' 18" W

12 Thermistor chain

Date and time
Vertical spatial coordinates
Temperature of the water column

[Show series]

Date and time
Vertical spatial coordinates
Temperature of the water column

[Hide series]

BODC id	Date/Time	Location
442479	1996-04-17 12:30 — 1996-05-15 13:30	56° 28' 1" N 8° 57' 45" W
442535	1996-04-18 14:00 — 1996-07-30 11:30	56° 27' 42" N 9° 9' 44" W
442455	1996-04-19 13:00 — 1996-05-10 14:00	56° 27' 17" N 9° 3' 51" W
442572	1996-04-19 15:00 — 1996-07-13 18:30	56° 27' 41" N 9° 3' 36" W
442480	1996-04-18 14:00 — 1996-07-30 11:30	56° 27' 42" N 9° 9' 44" W
442511	1996-04-18 14:30 — 1996-05-09 17:20	56° 27' 42" N 9° 9' 44" W
442523	1996-04-18 14:00 — 1996-07-30 11:30	56° 27' 42" N 9° 9' 44" W
442560	1996-04-18 17:00 — 1996-05-30 15:00	56° 28' 12" N 9° 9' 47" W
442584	1996-04-17 15:30 — 1996-07-28 14:00	56° 27' 43" N 8° 57' 41" W
442596	1996-04-17 15:30 — 1996-07-28 13:30	56° 27' 43" N 8° 57' 41" W
442418	1996-04-19 13:00 — 1996-05-10 14:00	56° 27' 17" N 9° 3' 51" W
442467	1996-04-19 12:30 — 1996-05-10 14:00	56° 27' 17" N 9° 3' 51" W

3 Transmissometer

Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column

[Show series]

Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column

[Hide series]

BODC id	Date/Time	Location
496164	1996-04-17 08:05 — 1996-07-15 13:58:59	56° 28' 1" N 8° 57' 45" W
496176	1996-04-18 16:36 — 1996-07-17 14:32	56° 28' 12" N 9° 9' 47" W
496188	1996-04-19 14:42 — 1996-07-13 18:48	56° 27' 41" N 9° 3' 36" W

1 Water temperature and/or salinity monitor

Date and time
Temperature of the water column

[Show series]

Date and time
Temperature of the water column

[Hide series]

BODC id	Date/Time	Location	Doc.
477246	1996-04-17 08:10 — 1996-07-15 13:20	56° 28' 1" N 8° 57' 45" W

2 radiometers

Date and time
Raw light meter output
Chlorophyll pigment concentrations in water bodies

[Show series]

Date and time
Raw light meter output
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location	Doc.
506098	1996-04-19 12:11 — 1996-06-15 12:11	56° 28' 12" N 9° 9' 47" W
506086	1996-04-17 12:11 — 1996-06-28 12:11	56° 28' 1" N 8° 57' 45" W

Discrete samples

45 CTD frame plus rosette sampler

Transmittance and attenuance of the water column
Particulate total and organic nitrogen concentrations in the water column
Salinity of the water column
Temperature of the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Phaeopigment concentrations in the water column
Particulate total and organic carbon concentrations in the water column
Chlorophyll pigment concentrations in water bodies

16 Instrument mooring

Concentration of silicon species in suspended particulate material
Other physical and chemical properties of suspended particulate material
Carbon concentrations in suspended particulate material
Sedimentation flux of carbon, nitrogen or organic matter in the water column
Nitrogen concentrations in suspended particulate material
Sedimentation flux quantification in the water column
Sedimentation flux of non-metallic inorganic species in the water column

11 Profiling radiometer

Visible waveband radiance and irradiance measurements in the atmosphere
Temperature of the water column
Visible waveband radiance and irradiance measurements in the water column

50 Sample taken from ship's non-toxic supply

Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

3211 Shipborne Acoustic Doppler Current Profile

Resources

RRS Challenger CH126A

Cruise summary report

Quick links

BODC holdings

EDMED