BODC Cruise Metadata Report for RRS Challenger (74CH) cruise CH121C
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | RRS Challenger (74CH) cruise CH121C |
|---|---|
| Short name | CH121C |
| 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 | Mallaig, United Kingdom |
| Departure Date | 1995-09-01 |
| Arrival Port | Southampton, United Kingdom |
| Arrival Date | 1995-09-10 |
| Principal Scientist(s) | John H Simpson (University of Wales, Bangor School of Ocean Sciences) |
| Responsible Organisation | University of Wales, Bangor School of Ocean Sciences, Proudman Oceanographic Laboratory |
| Associated Project(s) | LOIS - SES |
| IHB Sea Areas Visited | North East Atlantic Ocean (limit 40W) |
| Marsden Squares Visited | 181;4 |
| Work Area Description | NE Atlantic, Malin Shelf Break (60nm west of Hebrides) |
| Unable to lookup cruise bounds at this time | |
| Work Area Bounding Polygon | |
| Southern Limit | unknown |
| Northern Limit | unknown |
| Western Limit | unknown |
| Eastern Limit | unknown |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| CTD stations |
Quantity:
number of profiles =
32
Description: CTD plus transmissometer,fluorometer,O2 sensors,PAR sensors |
| Current meters |
Quantity:
number of recoveries =
7
Description: |
| Current profiler (eg ADCP) |
Quantity:
track kilometres =
500
Description: shipborne ADCP |
| Optics (eg underwater light levels) |
Quantity:
track kilometres =
500
Description: surface underway measurements |
| Optics (eg underwater light levels) |
Quantity:
number of profiles =
32
Description: on CTD |
| Surface measurements underway (T,S) |
Quantity:
track kilometres =
500
Description: surface underway measurements |
| Transparency (eg transmissometer) |
Quantity:
track kilometres =
500
Description: surface underway measurements |
| Transparency (eg transmissometer) |
Quantity:
number of profiles =
32
Description: on CTD |
| Chemical oceanography | |
| Oxygen |
Quantity:
number of profiles =
32
Description: on CTD |
| Contamination | |
| Suspended matter |
Quantity:
number of samples =
42
Description: 2 sediment traps deployed at 56 43.5N, 9 24.3W (redeployed) |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) |
Quantity:
number of profiles =
32
Description: on CTD |
| Phytoplankton pigs (eg chlorophyll, fluorescence) |
Quantity:
track kilometres =
500
Description: surface underway measurements |
| Phytoplankton pigs (eg chlorophyll, fluorescence) |
Quantity:
number of samples =
64
Description: bottle samples for chlorophyll determination |
| Geology and geophysics | |
| Core - soft bottom |
Quantity:
number of deployments =
9
Description: 8 multi- & 1 Sholkovitz core for bio- & geochemical analysis |
Cruise Inventory Mooring/Buoy Operations
| Latitude | Longitude | Data type | Description |
|---|---|---|---|
| 56° 27' N | 9° 3' W | Current meters | S400 site recovered, ADCP and STABLE |
| 56° 43' N | 9° 24' W | Current meters | Site N1500 recovered, current meter/transmissometer, sediment trapr |
| 56° 37' N | 9° 1' W | Current meters | Site N300 recovered |
| 56° 27' N | 8° 57' W | Current meters | Site S140, deployed |
| 56° 27' N | 9° 3' W | Current meters | Site S300, recovered, redeployed- and lost a few days later |
| 56° 27' N | 9° 4' W | Current meters | Site S400, recover/redeploy pop-up ADCP, recover pop-up current meter |
| 56° 28' N | 9° 9' W | Current meters | Site S700, recovered |
| 56° 27' N | 8° 58' W | Other physical oceanographic measurements | acoustic study of bubble entrapment (ARIES II) recovery |
| 56° 30' N | 9° 2' W | Phytoplankton pigs (eg chlorophyll, fluorescence) | toroid buoy with nitrate analysers and fluorometers |
| 56° 28' N | 8° 52' W | Phytoplankton pigs (eg chlorophyll, fluorescence) | toroid buoy with nitrate analysers and fluorometers |
| 56° 27' N | 9° 7' W | Surface drifters/drifting buoys | subsurface drogue (surface/subsurface temperature), deployed |
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
Summary
| # Series | Instrument Description | Parameters |
|---|---|---|
| 1 | Accelerometer-waverider buoy |
Date and time Wave height and period statistics |
| 2 | 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) |
| 25 | Bottle station |
Chlorophyll pigment concentrations in water bodies Phaeopigment concentrations in the water column Quality control flags Reference numbers Vertical spatial coordinates |
| 1 | Bottom pressure sensor tide gauge |
Date and time Sea level Temperature of the water column |
| 31 | 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 |
| 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 Transmittance and attenuance of the water column Vertical spatial coordinates |
| 1 | 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 Salinity of the water column 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 |
| 1 | Pumped water sample |
Chlorophyll pigment concentrations in water bodies Date and time Horizontal spatial co-ordinates Phaeopigment concentrations in the water column |
| 3 | 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 |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
Full List
| BODC Reference | Instrument Description | Date/Time | Location | |
|---|---|---|---|---|
| 431365 | Paddle wheel current meter | 1995-09-03 11:15Z to 1995-09-05 23:15Z | 56° 27' N, 9° 3' W | Click for more |
| 431433 | Paddle wheel current meter | 1995-09-03 11:15Z to 1995-09-05 23:15Z | 56° 27' N, 9° 3' W | Click for more |
| 436197 | Paddle wheel current meter | 1995-09-02 09:15Z to 1995-11-19 12:15Z | 56° 27' N, 8° 57' W | Click for more |
| 439379 | Paddle wheel current meter | 1995-09-02 08:44Z to 1995-11-19 12:14Z | 56° 27' N, 8° 57' W | Click for more |
| 439515 | Thermistor chain | 1995-09-02 09:00Z to 1995-11-19 12:00Z | 56° 27' N, 8° 57' W | Click for more |
| 439540 | Thermistor chain | 1995-09-03 11:30Z to 1995-09-05 23:00Z | 56° 27' N, 9° 3' W | Click for more |
| 439748 | Thermistor chain | 1995-09-03 11:30Z to 1995-09-05 23:00Z | 56° 27' N, 9° 3' W | Click for more |
| 442640 | Bottom pressure sensor tide gauge | 1995-09-04 18:30Z to 1995-11-19 09:30Z | 56° 27' N, 8° 58' W | Click for more |
| 444197 | Acoustic doppler current profiler | 1995-09-04 18:34Z to 1995-11-19 09:05Z | 56° 27' N, 8° 58' W | Click for more |
| 444253 | Acoustic doppler current profiler | 1995-09-06 07:55Z to 1995-11-27 08:15Z | 56° 27' N, 9° 4' W | Click for more |
| 476083 | Fluorometers | 1995-09-04 17:02Z to 1995-11-24 02:02Z | 56° 28' N, 8° 57' W | Click for more |
| 496139 | Transmissometer | 1995-09-04 16:12Z to 1995-11-27 11:27Z | 56° 28' N, 8° 57' W | Click for more |
| 507815 | Accelerometer-waverider buoy | 1995-09-05 18:00Z to 1995-11-07 06:00Z | 56° 27' N, 8° 58' W | Click for more |
| 851856 | CTD/STD cast | 1995-09-01 19:03Z | 56° 49' N, 6° 39' W | Click for more |
| 851868 | CTD/STD cast | 1995-09-02 08:59Z | 56° 28' N, 8° 58' W | Click for more |
| 851881 | CTD/STD cast | 1995-09-02 12:12Z | 56° 28' N, 9° 4' W | Click for more |
| 851893 | CTD/STD cast | 1995-09-02 14:11Z | 56° 37' N, 9° 1' W | Click for more |
| 851900 | CTD/STD cast | 1995-09-02 20:01Z | 56° 28' N, 9° 9' W | Click for more |
| 851912 | CTD/STD cast | 1995-09-03 02:34Z | 56° 27' N, 9° 18' W | Click for more |
| 851924 | CTD/STD cast | 1995-09-03 13:29Z | 56° 28' N, 9° 7' W | Click for more |
| 851936 | CTD/STD cast | 1995-09-03 21:40Z | 56° 30' N, 9° 2' W | Click for more |
| 851948 | CTD/STD cast | 1995-09-03 22:18Z | 56° 30' N, 9° 3' W | Click for more |
| 851961 | CTD/STD cast | 1995-09-03 23:13Z | 56° 30' N, 9° 7' W | Click for more |
| 851973 | CTD/STD cast | 1995-09-04 01:21Z | 56° 31' N, 9° 18' W | Click for more |
| 851985 | CTD/STD cast | 1995-09-04 07:29Z | 56° 43' N, 9° 25' W | Click for more |
| 851997 | CTD/STD cast | 1995-09-04 20:42Z | 56° 31' N, 9° 18' W | Click for more |
| 852000 | CTD/STD cast | 1995-09-05 02:18Z | 56° 39' N, 9° 6' W | Click for more |
| 852012 | CTD/STD cast | 1995-09-05 08:33Z | 56° 42' N, 9° 25' W | Click for more |
| 852024 | CTD/STD cast | 1995-09-06 01:13Z | 56° 27' N, 9° 39' W | Click for more |
| 852036 | CTD/STD cast | 1995-09-06 23:37Z | 56° 36' N, 8° 55' W | Click for more |
| 852048 | CTD/STD cast | 1995-09-07 00:16Z | 56° 37' N, 9° 0' W | Click for more |
| 852061 | CTD/STD cast | 1995-09-07 02:17Z | 56° 37' N, 9° 1' W | Click for more |
| 852073 | CTD/STD cast | 1995-09-07 04:04Z | 56° 33' N, 9° 0' W | Click for more |
| 852085 | CTD/STD cast | 1995-09-07 04:37Z | 56° 34' N, 9° 3' W | Click for more |
| 852097 | CTD/STD cast | 1995-09-07 13:04Z | 56° 34' N, 9° 6' W | Click for more |
| 852104 | CTD/STD cast | 1995-09-02 17:07Z | 56° 27' N, 9° 4' W | Click for more |
| 852116 | CTD/STD cast | 1995-09-03 07:27Z | 56° 27' N, 9° 3' W | Click for more |
| 852128 | CTD/STD cast | 1995-09-03 20:42Z | 56° 30' N, 8° 55' W | Click for more |
| 852141 | CTD/STD cast | 1995-09-04 00:07Z | 56° 31' N, 9° 10' W | Click for more |
| 852153 | CTD/STD cast | 1995-09-05 03:20Z | 56° 40' N, 9° 12' W | Click for more |
| 852165 | CTD/STD cast | 1995-09-06 05:10Z | 56° 36' N, 9° 17' W | Click for more |
| 852177 | CTD/STD cast | 1995-09-07 02:53Z | 56° 38' N, 9° 4' W | Click for more |
| 852189 | CTD/STD cast | 1995-09-07 05:15Z | 56° 33' N, 9° 1' W | Click for more |
| 852190 | CTD/STD cast | 1995-09-03 19:24Z | 56° 27' N, 9° 2' W | Click for more |
| 852208 | CTD/STD cast | 1995-09-04 15:35Z | 56° 27' N, 8° 57' W | Click for more |
| 1678538 | Pumped water sample | 1995-09-02 08:42Z to 1995-09-07 07:30Z | 56° 27' N to 56° 43' N; 9° 25' W to 8° 55' W | Click for more |
| 1687401 | Bottle station | 1995-09-02 09:14Z | 56° 28' N, 8° 58' W | Click for more |
| 1687413 | Bottle station | 1995-09-02 14:23Z | 56° 37' N, 9° 1' W | Click for more |
| 1687425 | Bottle station | 1995-09-02 17:15Z | 56° 27' N, 9° 4' W | Click for more |
| 1687437 | Bottle station | 1995-09-03 02:59Z | 56° 27' N, 9° 18' W | Click for more |
| 1687449 | Bottle station | 1995-09-03 07:41Z | 56° 27' N, 9° 3' W | Click for more |
| 1687450 | Bottle station | 1995-09-03 13:43Z | 56° 28' N, 9° 7' W | Click for more |
| 1687462 | Bottle station | 1995-09-03 19:35Z | 56° 27' N, 9° 2' W | Click for more |
| 1687474 | Bottle station | 1995-09-03 20:49Z | 56° 30' N, 8° 55' W | Click for more |
| 1687486 | Bottle station | 1995-09-03 21:45Z | 56° 30' N, 9° 2' W | Click for more |
| 1687498 | Bottle station | 1995-09-03 22:29Z | 56° 30' N, 9° 3' W | Click for more |
| 1687505 | Bottle station | 1995-09-03 23:27Z | 56° 30' N, 9° 7' W | Click for more |
| 1687517 | Bottle station | 1995-09-04 00:29Z | 56° 31' N, 9° 10' W | Click for more |
| 1687529 | Bottle station | 1995-09-04 01:49Z | 56° 31' N, 9° 18' W | Click for more |
| 1687530 | Bottle station | 1995-09-04 08:01Z | 56° 43' N, 9° 25' W | Click for more |
| 1687542 | Bottle station | 1995-09-04 15:44Z | 56° 27' N, 8° 57' W | Click for more |
| 1687554 | Bottle station | 1995-09-05 02:34Z | 56° 39' N, 9° 6' W | Click for more |
| 1687566 | Bottle station | 1995-09-05 03:44Z | 56° 40' N, 9° 12' W | Click for more |
| 1687578 | Bottle station | 1995-09-05 09:02Z | 56° 42' N, 9° 25' W | Click for more |
| 1687591 | Bottle station | 1995-09-06 01:40Z | 56° 27' N, 9° 39' W | Click for more |
| 1687609 | Bottle station | 1995-09-06 05:33Z | 56° 36' N, 9° 17' W | Click for more |
| 1687610 | Bottle station | 1995-09-07 00:24Z | 56° 37' N, 9° 0' W | Click for more |
| 1687622 | Bottle station | 1995-09-07 02:25Z | 56° 37' N, 9° 1' W | Click for more |
| 1687634 | Bottle station | 1995-09-07 03:10Z | 56° 38' N, 9° 4' W | Click for more |
| 1687646 | Bottle station | 1995-09-07 04:47Z | 56° 34' N, 9° 3' W | Click for more |
| 1687658 | Bottle station | 1995-09-07 05:21Z | 56° 33' N, 9° 1' W | Click for more |
Project Database
| # Events | Gear Type | Parameters Held |
|---|---|---|
| 8 | Multicorer |
Concentration of organic matter in sediments
Other fluxes between the bed and the water column Stable isotopes in sediment Sediment water content, porosity and surface area Concentration of inorganic sulphur species in sediment |
| 30 | Sample taken from ship's non-toxic supply |
Salinity of the water column
Phaeopigment concentrations in the water column Chlorophyll pigment concentrations in water bodies |
| 1 | Drifting Buoy | |
| 1 | Sholkovitz Gravity Corer | |
| 605 | Shipborne Acoustic Doppler Current Profile | |
| 7 | 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 |
| 32 | 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 Chlorophyll pigment concentrations in water bodies Particulate total and organic carbon concentrations in the water column |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
