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BODC Cruise Metadata Report for RRS Challenger (74CH) cruise CH121A

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS Challenger (74CH) cruise CH121A
Short name CH121A
Objectives and Narrative CH121 was the second of six cruises under the LOIS Shelf Edge Study (SES) aimed at defining the nature of the processes occurring at the shelf edge, their seasonal variability and their impact on the fluxes of nutrients and carbon across the shelf and into the seabed sediments through the shelf.
The cruise was divided into three legs with the first and third being principally directed to the deployment and recovery of an extensive mooring array and the acquisition of sediment cores from selected sites in the SES area. The second leg had a series of objectives concerned with measuring the water column structure and velocity field in the shelf edge regime. To complement the time series data from the moored array of current meters and thermistor chains, the cruise plan called for measurements by shipboard adcp and CTD together to help identify the motions associated with internal tides and waves. These motions, which are generated at the shelf edge, may contribute to turbulent mixing and dissipation and the distribution of the latter was to be investigated with the aid of the FLY free-fall turbulence probe which was to be investigated. More wide-ranging spatial measurements were required to demonstrate the continuity of the slope current and to investigate its cross slope structure.
While this cruise was principally concerned with the physics of the shelf edge system, the programme was also designed to obtain an extensive set of measurements of chlorophyll a, primary production and nutrient concentrations in parallel with physical observations. A further goal was to acquire surficial sediment material from a number of sites down the slope.
Ship RRS Challenger
Departure Port Ardrossan, United Kingdom
Departure Date 1995-08-10
Arrival Port Mallaig, United Kingdom
Arrival Date 1995-08-18
Principal Scientist(s) John H Simpson (University of Wales, Bangor School of Ocean Sciences)
Responsible Organisation Proudman Oceanographic Laboratory, University of Wales, Bangor School of Ocean Sciences
Associated Project(s) LOIS - SES
IHB Sea Areas Visited North East Atlantic Ocean (limit 40W)
Marsden Squares Visited 181;4
Work Area Description Off NW Scotland, Malin Shelf break approx 56 30N, 9W
Work Area Bounding Polygon 55N,10W; 60N,10W; 60N,5W; 55N,5W; 55N,10W
Southern Limit 55N
Northern Limit 60N
Western Limit 10W
Eastern Limit 5W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of profiles = 30
Description:  
Current meters Quantity: number of deployments = 6
Description:  
Current profiler (eg ADCP) Quantity: track kilometres = 550
Description: underway measurements  
Optics (eg underwater light levels) Quantity: track kilometres = 550
Description: underway measurements  
Surface measurements underway (T,S) Quantity: track kilometres = 550
Description: underway measurements  
Transparency (eg transmissometer) Quantity: track kilometres = 550
Description: underway measurements  
Transparency (eg transmissometer) Quantity: number of profiles = 30
Description: on CTD  
Chemical oceanography  
Nitrate Quantity: number of profiles = 2
Description:  
Nitrite Quantity: number of profiles = 2
Description:  
Oxygen Quantity: number of profiles = 30
Description: on CTD  
Biology and fisheries  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: track kilometres = 550
Description: underway measurements  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of samples = 33
Description: non-toxic surface samples for chlorophyll  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of samples = 75
Description:  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of profiles = 30
Description: on CTD  
Geology and geophysics  
Core - soft bottom Quantity: number of deployments = 6
Description: multicorer samples for geochemical and biogeochemical analysis  
Single-beam echosounding Quantity: track kilometres = 550
Description: underway measurements  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
56° 27' N 9° 4' W Current meters ADCP and CM moorings (S400 site)
56° 28' N 8° 58' W Current meters ADCP, CM, Met buoy plus ARIES II mooring (S140 site)
56° 27' N 9° 3' W Current meters CM with thermistor chain, tranmissometer, STABLE (S200 site)
56° 37' N 9° 1' W Current meters Pop-up mooring; CM, thermistor chain, transmissometer (N300 site)
56° 27' N 9° 4' W Current meters pop-up+toroid CM mooring,thermistor chain/tranmissometer (S300 site)
56° 27' N 9° 9' W Current meters pop-up+toroid CM moorings, thermistor chains/transmissometers (S700)
56° 27' N 9° 4' W Current profiler (eg ADCP) ADCP and CM moorings (S400 site)
56° 28' N 8° 58' W Current profiler (eg ADCP) ADCP, CM, Met buoy plus ARIES II mooring (S140 site)
56° 28' N 8° 58' W Other meteorological measurements ADCP, CM, Met buoy plus ARIES II mooring (S140 site)
56° 36' N 8° 56' W Sea level (inc. bot. press., inverted echosounder) Bottom pressure recorder (N140 site)
56° 28' N 8° 58' W Subsurface temperature measurements ADCP, CM, Met buoy plus ARIES II mooring (S140 site)
56° 27' N 9° 3' W Subsurface temperature measurements CM with thermistor chain, tranmissometer, STABLE (S200 site)
56° 37' N 9° 1' W Subsurface temperature measurements Pop-up mooring; CM, thermistor chain, transmissometer (N300 site)
56° 27' N 9° 4' W Subsurface temperature measurements pop-up+toroid CM mooring,thermistor chain/tranmissometer (S300 site)
56° 27' N 9° 9' W Subsurface temperature measurements pop-up+toroid CM moorings, thermistor chains/transmissometers (S700)
56° 28' N 8° 58' W Transparency (eg transmissometer) ADCP, CM, Met buoy plus ARIES II mooring (S140 site)
56° 27' N 9° 3' W Transparency (eg transmissometer) CM with thermistor chain, tranmissometer, STABLE (S200 site)
56° 37' N 9° 1' W Transparency (eg transmissometer) Pop-up mooring; CM, thermistor chain, transmissometer (N300 site)
56° 27' N 9° 4' W Transparency (eg transmissometer) pop-up+toroid CM mooring,thermistor chain/tranmissometer (S300 site)
56° 27' N 9° 9' W Transparency (eg transmissometer) pop-up+toroid CM moorings, thermistor chains/transmissometers (S700)

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
3 Acoustic doppler current profiler Date and time
Horizontal velocity of the water column (currents)
Metadata parameters
Vertical spatial coordinates
Vertical velocity of the water column (currents)
27 Bottle station Chlorophyll pigment concentrations in water bodies
Phaeopigment concentrations in the water column
Quality control flags
Reference numbers
Vertical spatial coordinates
2 Bottom pressure sensor tide gauge Date and time
Sea level
Temperature of the water column
1 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column
8 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column
20 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
3 Electromagnetic current meter Date and time
Horizontal velocity of the water column (currents)
3 Fluorometers Chlorophyll pigment concentrations in water bodies
Date and time
Raw fluorometer output
1 Paddle wheel current meter Date and time
Electrical conductivity of the water column
Horizontal velocity of the water column (currents)
Moored instrument depth
Temperature of the water column
Transmittance and attenuance of the water column
3 Paddle wheel current meter Date and time
Electrical conductivity of the water column
Horizontal velocity of the water column (currents)
Moored instrument depth
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
1 Paddle wheel current meter Date and time
Electrical conductivity of the water column
Horizontal velocity of the water column (currents)
Moored instrument depth
Temperature of the water column
9 Paddle wheel current meter Date and time
Electrical conductivity of the water column
Horizontal velocity of the water column (currents)
Moored instrument depth
Salinity of the water column
Temperature of the water column
1 Pumped water sample Chlorophyll pigment concentrations in water bodies
Date and time
Horizontal spatial co-ordinates
Phaeopigment concentrations in the water column
1 Savonius rotor current meter Date and time
Horizontal velocity of the water column (currents)
Platform or instrument orientation
Sea level
Temperature of the water column
12 Thermistor chain Date and time
Temperature of the water column
Vertical spatial coordinates
1 Transmissometer Date and time
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
1 Transmissometer Date and time
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
426086 Electromagnetic current meter 1995-08-14 14:12Z to 1995-09-02 10:02Z 56° 27' N, 9° 3' W Click for more
426105 Electromagnetic current meter 1995-08-13 16:42Z to 1995-09-06 04:52Z 56° 27' N, 9° 9' W Click for more
426129 Electromagnetic current meter 1995-08-11 19:22Z to 1995-08-31 13:22Z 56° 27' N, 8° 57' W Click for more
431248 Paddle wheel current meter 1995-08-13 16:55Z to 1995-09-06 04:55Z 56° 27' N, 9° 9' W Click for more
431304 Paddle wheel current meter 1995-08-13 16:56Z to 1995-09-06 04:56Z 56° 27' N, 9° 9' W Click for more
431328 Paddle wheel current meter 1995-08-14 14:10Z to 1995-09-02 10:00Z 56° 27' N, 9° 3' W Click for more
431353 Paddle wheel current meter 1995-08-14 14:07Z to 1995-09-02 10:02Z 56° 27' N, 9° 3' W Click for more
431377 Paddle wheel current meter 1995-08-16 16:12Z to 1995-09-02 14:32Z 56° 37' N, 9° 1' W Click for more
431389 Paddle wheel current meter 1995-08-15 15:52Z to 1995-09-02 17:32Z 56° 27' N, 9° 4' W Click for more
431390 Paddle wheel current meter 1995-08-16 16:12Z to 1995-09-02 14:32Z 56° 37' N, 9° 1' W Click for more
431421 Paddle wheel current meter 1995-08-14 14:10Z to 1995-09-02 10:00Z 56° 27' N, 9° 3' W Click for more
436185 Paddle wheel current meter 1995-08-11 19:17Z to 1995-08-31 13:17Z 56° 27' N, 8° 57' W Click for more
439238 Paddle wheel current meter 1995-08-16 16:12Z to 1995-09-02 14:32Z 56° 37' N, 9° 1' W Click for more
439275 Paddle wheel current meter 1995-08-13 16:55Z to 1995-09-06 04:55Z 56° 27' N, 9° 9' W Click for more
439299 Paddle wheel current meter 1995-08-11 19:17Z to 1995-08-31 13:22Z 56° 27' N, 9° 3' W Click for more
439318 Paddle wheel current meter 1995-08-14 14:07Z to 1995-08-16 07:52Z 56° 27' N, 9° 3' W Click for more
439343 Paddle wheel current meter 1995-08-14 14:07Z to 1995-09-02 10:02Z 56° 27' N, 9° 3' W Click for more
439503 Thermistor chain 1995-08-11 19:18Z to 1995-08-15 10:56Z 56° 27' N, 8° 57' W Click for more
439539 Thermistor chain 1995-08-16 16:30Z to 1995-09-02 14:30Z 56° 37' N, 9° 1' W Click for more
439564 Thermistor chain 1995-08-14 17:03Z to 1995-09-06 06:03Z 56° 27' N, 9° 9' W Click for more
439668 Thermistor chain 1995-08-15 19:26Z to 1995-09-03 14:56Z 56° 28' N, 8° 57' W Click for more
439693 Thermistor chain 1995-08-13 17:03Z to 1995-09-06 10:03Z 56° 27' N, 9° 9' W Click for more
439712 Thermistor chain 1995-08-14 14:05Z to 1995-09-02 10:05Z 56° 27' N, 9° 3' W Click for more
439736 Thermistor chain 1995-08-14 14:25Z to 1995-09-02 09:05Z 56° 27' N, 9° 3' W Click for more
439773 Thermistor chain 1995-08-14 14:25Z to 1995-09-02 09:55Z 56° 27' N, 9° 3' W Click for more
439797 Thermistor chain 1995-08-13 17:15Z to 1995-09-06 10:15Z 56° 27' N, 9° 9' W Click for more
439816 Thermistor chain 1995-08-14 14:59Z to 1995-09-02 10:07Z 56° 27' N, 9° 3' W Click for more
442363 Thermistor chain 1995-08-16 08:30Z to 1995-09-06 08:00Z 56° 27' N, 9° 3' W Click for more
442399 Thermistor chain 1995-08-16 16:30Z to 1995-09-02 09:40Z 56° 37' N, 9° 1' W Click for more
442688 Bottom pressure sensor tide gauge 1995-08-17 12:40Z to 1995-09-04 06:55Z 56° 27' N, 8° 58' W Click for more
442707 Bottom pressure sensor tide gauge 1995-08-17 14:14Z to 1996-01-10 07:29Z 56° 36' N, 8° 56' W Click for more
444185 Acoustic doppler current profiler 1995-08-11 08:17Z to 1995-09-03 17:59Z 56° 26' N, 9° 3' W Click for more
444216 Acoustic doppler current profiler 1995-08-17 12:41Z to 1995-09-04 16:08Z 56° 27' N, 8° 58' W Click for more
444228 Acoustic doppler current profiler 1995-08-12 08:52Z to 1995-09-05 13:37Z 56° 27' N, 9° 4' W Click for more
444413 Savonius rotor current meter 1995-08-11 05:37Z to 1995-09-06 17:53Z 56° 27' N, 9° 3' W Click for more
476071 Fluorometers 1995-08-15 20:02Z to 1995-09-03 15:02Z 56° 28' N, 8° 57' W Click for more
476126 Fluorometers 1995-08-13 15:02Z to 1995-09-06 12:59Z 56° 27' N, 9° 9' W Click for more
476175 Fluorometers 1995-08-16 09:09Z to 1995-09-06 08:02Z 56° 27' N, 9° 3' W Click for more
496127 Transmissometer 1995-08-15 19:04Z to 1995-09-03 15:14Z 56° 28' N, 8° 57' W Click for more
496140 Transmissometer 1995-08-16 08:00Z to 1995-09-06 08:07Z 56° 27' N, 9° 3' W Click for more
849514 CTD/STD cast 1995-08-14 14:21Z 56° 27' N, 9° 4' W Click for more
849526 CTD/STD cast 1995-08-15 10:01Z 56° 27' N, 9° 2' W Click for more
849538 CTD/STD cast 1995-08-15 19:56Z 56° 28' N, 8° 58' W Click for more
849551 CTD/STD cast 1995-08-15 23:58Z 56° 37' N, 9° 1' W Click for more
849563 CTD/STD cast 1995-08-16 03:15Z 56° 38' N, 9° 10' W Click for more
849575 CTD/STD cast 1995-08-11 09:33Z 56° 28' N, 8° 52' W Click for more
849587 CTD/STD cast 1995-08-11 14:21Z 56° 27' N, 8° 57' W Click for more
849599 CTD/STD cast 1995-08-11 19:45Z 56° 27' N, 8° 57' W Click for more
849606 CTD/STD cast 1995-08-12 08:48Z 56° 27' N, 9° 4' W Click for more
849618 CTD/STD cast 1995-08-12 14:18Z 56° 27' N, 9° 3' W Click for more
849631 CTD/STD cast 1995-08-12 18:13Z 56° 26' N, 9° 3' W Click for more
849643 CTD/STD cast 1995-08-12 20:16Z 56° 27' N, 9° 7' W Click for more
849655 CTD/STD cast 1995-08-12 21:23Z 56° 28' N, 9° 10' W Click for more
849667 CTD/STD cast 1995-08-12 23:08Z 56° 27' N, 9° 18' W Click for more
849679 CTD/STD cast 1995-08-13 01:44Z 56° 27' N, 9° 39' W Click for more
849680 CTD/STD cast 1995-08-13 07:03Z 56° 26' N, 9° 3' W Click for more
849692 CTD/STD cast 1995-08-13 16:52Z 56° 28' N, 9° 10' W Click for more
849711 CTD/STD cast 1995-08-14 17:41Z 56° 27' N, 9° 3' W Click for more
849723 CTD/STD cast 1995-08-14 21:32Z 56° 27' N, 9° 9' W Click for more
849735 CTD/STD cast 1995-08-15 14:17Z 56° 27' N, 8° 58' W Click for more
849747 CTD/STD cast 1995-08-15 17:18Z 56° 28' N, 8° 57' W Click for more
849759 CTD/STD cast 1995-08-15 21:24Z 56° 36' N, 8° 55' W Click for more
849760 CTD/STD cast 1995-08-15 23:01Z 56° 37' N, 8° 59' W Click for more
849772 CTD/STD cast 1995-08-16 01:03Z 56° 38' N, 9° 5' W Click for more
849784 CTD/STD cast 1995-08-16 01:58Z 56° 39' N, 9° 7' W Click for more
849796 CTD/STD cast 1995-08-16 08:42Z 56° 27' N, 9° 3' W Click for more
849803 CTD/STD cast 1995-08-16 12:03Z 56° 38' N, 9° 0' W Click for more
849815 CTD/STD cast 1995-08-16 17:20Z 56° 37' N, 9° 1' W Click for more
849827 CTD/STD cast 1995-08-13 09:57Z 56° 27' N, 9° 4' W Click for more
1653072 Bottle station 1995-08-12 23:38Z 56° 27' N, 9° 18' W Click for more
1653084 Bottle station 1995-08-13 02:27Z 56° 27' N, 9° 39' W Click for more
1653096 Bottle station 1995-08-13 07:13Z 56° 26' N, 9° 3' W Click for more
1653103 Bottle station 1995-08-13 17:11Z 56° 28' N, 9° 10' W Click for more
1653115 Bottle station 1995-08-14 14:36Z 56° 27' N, 9° 4' W Click for more
1653127 Bottle station 1995-08-14 17:52Z 56° 27' N, 9° 3' W Click for more
1653139 Bottle station 1995-08-15 10:10Z 56° 26' N, 9° 2' W Click for more
1653140 Bottle station 1995-08-15 14:27Z 56° 27' N, 8° 58' W Click for more
1653152 Bottle station 1995-08-11 09:42Z 56° 28' N, 8° 52' W Click for more
1653164 Bottle station 1995-08-15 17:30Z 56° 28' N, 8° 57' W Click for more
1653176 Bottle station 1995-08-15 19:58Z 56° 28' N, 8° 58' W Click for more
1653188 Bottle station 1995-08-15 21:31Z 56° 36' N, 8° 55' W Click for more
1653207 Bottle station 1995-08-15 23:12Z 56° 37' N, 8° 59' W Click for more
1653219 Bottle station 1995-08-16 00:14Z 56° 37' N, 9° 1' W Click for more
1653220 Bottle station 1995-08-16 01:23Z 56° 38' N, 9° 5' W Click for more
1653232 Bottle station 1995-08-16 02:21Z 56° 39' N, 9° 7' W Click for more
1653244 Bottle station 1995-08-16 04:07Z 56° 38' N, 9° 10' W Click for more
1653256 Bottle station 1995-08-16 08:53Z 56° 27' N, 9° 3' W Click for more
1653268 Bottle station 1995-08-16 12:19Z 56° 38' N, 9° 0' W Click for more
1653281 Bottle station 1995-08-11 14:20Z 56° 27' N, 8° 57' W Click for more
1653293 Bottle station 1995-08-16 17:33Z 56° 37' N, 9° 1' W Click for more
1653300 Bottle station 1995-08-11 19:53Z 56° 27' N, 8° 57' W Click for more
1653312 Bottle station 1995-08-12 09:03Z 56° 27' N, 9° 4' W Click for more
1653324 Bottle station 1995-08-12 14:28Z 56° 27' N, 9° 3' W Click for more
1653336 Bottle station 1995-08-12 18:35Z 56° 26' N, 9° 3' W Click for more
1653348 Bottle station 1995-08-12 20:35Z 56° 27' N, 9° 7' W Click for more
1653361 Bottle station 1995-08-12 21:44Z 56° 28' N, 9° 10' W Click for more
1676243 Pumped water sample 1995-08-11 07:27Z to 1995-08-17 19:46Z 56° 25' N to 56° 40' N; 9° 18' W to 8° 37' W Click for more

Project Database

# Events Gear Type Parameters Held
4 Sholkovitz Gravity Corer
19 Instrument mooring
30 CTD frame plus rosette sampler
Transmittance and attenuance 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
Salinity of the water column
Temperature of the water column
Phaeopigment concentrations in the water column
33 Sample taken from ship's non-toxic supply
Chlorophyll pigment concentrations in water bodies
Phaeopigment concentrations in the water column
5 Underwater camera system
6 Multicorer
Stable isotopes in sediment

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report