BODC Cruise Metadata Report for RRS James Cook (740H) cruise JC187
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 James Cook (740H) cruise JC187 |
|---|---|
| Short name | JC187 |
| Objectives and Narrative |
Overall Aims
The first overall aim of the project is to understand the speed, frequency, runout distance, and character of turbidity currents within the Congo Canyon. We also seek to understand how turbidity currents form seafloor deposits, and sculpt seabed morphology. This information will help with geohazard assessment and planning of future submarine cable routes across the Congo Canyon. The second overall aim is to determine whether hydrophones or geophones can record turbidity currents, and thus provide information on their frequency, duration or character. A series of subsidiary aims include the following. The third aim is to understand how organic carbon is transferred, fractionated and buried by turbidity currents. The fourth aim is to test whether turbidity currents transport microplastic particles to the deep sea. A final aim is to understand the distribution and abundance of EPS (Extracellular Polymetric Substances) on the canyon floor, which is a sticky substance secreted by organisms that may affect the cohesive properties of the seabed. Brief Narrative Research cruise JC187 was very successful. It deployed 11 acoustic Doppler current profiler (ADCP) moorings, 12 Ocean Bottom Seismometers and a hydrophone array along the Congo Canyon. This comprises 7 ADCP-moorings at 5 sites in the upper canyon, within Angolan waters. A further 4 ADCP-moorings were then deployed at 4 sites within deeper International Waters. A total of 25 mega-cores (~50 cm long that capture the sediment-water interface) and 20 much longer (up to 15 m) piston cores were collected. To help locate moorings, detailed (5-15 m horizontal resolution) bathymetric surveys were completed between all 5 mooring sites in Angolan waters, along a ~70 km length of the canyon. Detailed bathymetry was also collected along the entire canyon length within International Waters. The moorings will now be recovered by a second NERC-funded cruise in Oct-Dec 2020, and we will see whether the ADCPs and other sensors have recorded the frequency, runout and nature of turbidity currents moving down the canyon. |
| Ship | RRS James Cook |
| Departure Port | Mindelo, Cape Verde |
| Departure Date | 2019-08-31 |
| Arrival Port | Walvis Bay, Namibia |
| Arrival Date | 2019-10-07 |
| Principal Scientist(s) | Peter J Talling (University of Durham Department of Geography) |
| Responsible Organisation | University of Durham Department of Geography, University of Durham, Department of Earth Sciences |
| Associated Project(s) | |
| IHB Sea Areas Visited | South East Atlantic Ocean (limit 20W) |
| Marsden Squares Visited | 2/300/301/334/335/370/371/38/39/406 |
| Work Area Description | Congo Canyon and channel system |
| 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 =
11
Description: CTD cast and SVP |
| Geology and geophysics | |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 19 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 18 |
| Core - soft bottom |
Quantity:
number of cores =
4
Description: Multicore 03 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 16 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 20 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 21 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 22 |
| Core - soft bottom |
Quantity:
number of cores =
1
Description: Multicore 23 |
| Core - soft bottom |
Quantity:
number of cores =
4
Description: Multicore 25 |
| Core - soft bottom |
Quantity:
number of cores =
20
Description: Piston core |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 08 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 24 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 17 |
| Core - soft bottom |
Quantity:
number of cores =
4
Description: Multicore (MC) ? 02 |
| Core - soft bottom |
Quantity:
number of cores =
4
Description: Multicore 04 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 05 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 06 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 07 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 10 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 11 |
| Core - soft bottom |
Quantity:
number of cores =
3
Description: Multicore 12 |
| Core - soft bottom |
Quantity:
number of cores =
1
Description: Multicore 13 |
| Core - soft bottom |
Quantity:
number of samples =
5
Description: Multicore 14 Sediment Bags |
| Core - soft bottom |
Quantity:
number of cores =
2
Description: Multicore 15 |
| Multi-beam echosounding |
Quantity:
track kilometres =
415
Description: Multibeam survey of channel in international waters |
| Multi-beam echosounding |
Quantity:
track kilometres =
75
Description: Multibeam survey of upper canyon |
Cruise Inventory Mooring/Buoy Operations
| Latitude | Longitude | Data type | Description |
|---|---|---|---|
| 5° 54' S | 11° 19' E | CTD stations | IFREMER Aniitra-2 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 19/09/19 |
| 5° 52' S | 11° 10' E | CTD stations | IFREMER Aniitra-3 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 21/09/19 |
| 5° 54' S | 11° 19' E | CTD stations | Mooring 1: CTD and 300 kHz ADCP 65 m above the seabed (ASB) deployed 19/09/19 |
| 5° 50' S | 11° 2' E | CTD stations | Mooring 2: CTD 153 m ASB, 75 kHz ADCP 152 m ASB, CTD 65 m ASB, 300 kHz ADCP 65 m, Hydrophone 50 m ASB deployed 25/09/19 |
| 5° 57' S | 11° 33' E | CTD stations | Mooring 3: CTD and 300 kHz ADCP 65 m ASB deployed 20/09/19 |
| 5° 55' S | 11° 28' E | CTD stations | Mooring 4: CTD and 300 kHz ADCP 65 m ASB deployed 20/09/19 |
| 5° 43' S | 8° 7' E | CTD stations | Mooring 5: CTD and 300 kHz ADCP 79 m ASB deployed 28/09/19 |
| 5° 52' S | 6° 55' E | CTD stations | Mooring 6: CTD and 300 kHz ADCP 79 m ASB deployed 29/09/19 |
| 6° 27' S | 6° 3' E | CTD stations | Mooring 7: CTD 30 m ASB, Sediment trap 23m ASB, CTD and 300 kHz ADCP 79 m ASB deployed 11/09/19 |
| 5° 45' S | 7° 40' E | CTD stations | Mooring 8-R: CTD and 300 kHz ADCP 79 m ASB deployed 02/10/19 |
| 6° 42' S | 5° 28' E | CTD stations | Mooring 8: CTD and 300 kHz ADCP 79 m ASB deployed 10/09/19 recovered 01/10/2019. |
| 5° 50' S | 11° 2' E | CTD stations | Mooring 9: CTD 44 m ASB, 600 kHz ADCP 44 m ASB, CTD 34 m ASB, sediment trap 32 m ASB deployed 21/09/19 |
| 5° 54' S | 11° 19' E | Current profiler (eg ADCP) | IFREMER Aniitra-2 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 19/09/19 |
| 5° 52' S | 11° 10' E | Current profiler (eg ADCP) | IFREMER Aniitra-3 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 21/09/19 |
| 5° 54' S | 11° 19' E | Current profiler (eg ADCP) | Mooring 1: CTD and 300 kHz ADCP 65 m above the seabed (ASB) deployed 19/09/19 |
| 5° 50' S | 11° 2' E | Current profiler (eg ADCP) | Mooring 2: CTD 153 m ASB, 75 kHz ADCP 152 m ASB, CTD 65 m ASB, 300 kHz ADCP 65 m, Hydrophone 50 m ASB deployed 25/09/19 |
| 5° 57' S | 11° 33' E | Current profiler (eg ADCP) | Mooring 3: CTD and 300 kHz ADCP 65 m ASB deployed 20/09/19 |
| 5° 55' S | 11° 28' E | Current profiler (eg ADCP) | Mooring 4: CTD and 300 kHz ADCP 65 m ASB deployed 20/09/19 |
| 5° 43' S | 8° 7' E | Current profiler (eg ADCP) | Mooring 5: CTD and 300 kHz ADCP 79 m ASB deployed 28/09/19 |
| 5° 52' S | 6° 55' E | Current profiler (eg ADCP) | Mooring 6: CTD and 300 kHz ADCP 79 m ASB deployed 29/09/19 |
| 6° 27' S | 6° 3' E | Current profiler (eg ADCP) | Mooring 7: CTD 30 m ASB, Sediment trap 23m ASB, CTD and 300 kHz ADCP 79 m ASB deployed 11/09/19 |
| 5° 45' S | 7° 40' E | Current profiler (eg ADCP) | Mooring 8-R: CTD and 300 kHz ADCP 79 m ASB deployed 02/10/19 |
| 6° 42' S | 5° 28' E | Current profiler (eg ADCP) | Mooring 8: CTD and 300 kHz ADCP 79 m ASB deployed 10/09/19 recovered 01/10/2019. |
| 5° 50' S | 11° 2' E | Current profiler (eg ADCP) | Mooring 9: CTD 44 m ASB, 600 kHz ADCP 44 m ASB, CTD 34 m ASB, sediment trap 32 m ASB deployed 21/09/19 |
| 6° 14' S | 6° 25' E | Geophysical measurements made at depth | German OBS-1 deployed 12/09/2019 |
| 6° 28' S | 6° 2' E | Geophysical measurements made at depth | German OBS-2 deployed 01/10/2019 |
| 5° 54' S | 11° 19' E | Geophysical measurements made at depth | OBS-1 (Ocean Bottom Seiesmometers) deployed 19/09/2019 |
| 5° 44' S | 7° 37' E | Geophysical measurements made at depth | OBS-10 deployed 02/10/2019 |
| 5° 57' S | 11° 31' E | Geophysical measurements made at depth | OBS-2 deployed 20/09/2019 |
| 5° 55' S | 11° 27' E | Geophysical measurements made at depth | OBS-3 deployed 20/09/2019 |
| 5° 54' S | 11° 27' E | Geophysical measurements made at depth | OBS-4 deployed 20/09/2019 |
| 5° 51' S | 11° 1' E | Geophysical measurements made at depth | OBS-5 deployed 22/09/2019 |
| 5° 45' S | 8° 7' E | Geophysical measurements made at depth | OBS-6 deployed 28/09/2019 |
| 5° 45' S | 7° 52' E | Geophysical measurements made at depth | OBS-7 deployed 28/09/2019 |
| 5° 46' S | 7° 16' E | Geophysical measurements made at depth | OBS-8 deployed 28/09/2019 |
| 5° 54' S | 6° 53' E | Geophysical measurements made at depth | OBS-9 deployed 29/09/2019 |
| 5° 54' S | 11° 19' E | Other geological/geophysical measurements | IFREMER Aniitra-2 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 19/09/19 |
| 5° 52' S | 11° 10' E | Other geological/geophysical measurements | IFREMER Aniitra-3 mooring, 75 kHz ADCP 250 m ASB and sediment traop 40 m ASB, deployed 21/09/19 |
| 5° 50' S | 11° 2' E | Other geological/geophysical measurements | Mooring 2: CTD 153 m ASB, 75 kHz ADCP 152 m ASB, CTD 65 m ASB, 300 kHz ADCP 65 m, Hydrophone 50 m ASB deployed 25/09/19 |
| 6° 27' S | 6° 3' E | Other geological/geophysical measurements | Mooring 7: CTD 30 m ASB, Sediment trap 23m ASB, CTD and 300 kHz ADCP 79 m ASB deployed 11/09/19 |
| 5° 50' S | 11° 2' E | Other geological/geophysical measurements | Mooring 9: CTD 44 m ASB, 600 kHz ADCP 44 m ASB, CTD 34 m ASB, sediment trap 32 m ASB deployed 21/09/19 |
| 5° 51' S | 11° 1' E | Other geological/geophysical measurements | OBIC hydrophone mooring array, 20 hydrophones in vertical array, deployed 22/09/19 |
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
Summary
| # Series | Instrument Description | Parameters |
|---|---|---|
| 1 | Meteorological data logger |
Air pressure Air temperature Atmospheric humidity Date and time Horizontal spatial co-ordinates Raw light meter output Reference numbers Solar Radiation Visible waveband radiance and irradiance measurements in the atmosphere Wind strength and direction |
| 1 | Multi-beam echosounder |
Bathymetry and Elevation Date and time Horizontal platform movement Horizontal spatial co-ordinates Platform or instrument orientation Reference numbers |
| 1 | Multiple instrument types |
Chlorophyll pigment concentrations in water bodies Date and time Electrical conductivity of the water column Horizontal spatial co-ordinates Metadata parameters Raw fluorometer output Raw suspended particulate material concentration sensor output Reference numbers 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 | |
|---|---|---|---|---|
| 2058436 | Multi-beam echosounder | 2019-08-31 11:08Z to 2019-10-07 09:41Z | 22° 57' S to 16° 55' N; 25° 8' W to 14° 30' E | Click for more |
| 2058448 | Meteorological data logger | 2019-08-31 11:08Z to 2019-10-07 09:41Z | 22° 57' S to 16° 55' N; 25° 8' W to 14° 30' E | Click for more |
| 2058461 | Multiple instrument types | 2019-08-31 11:08Z to 2019-10-07 09:41Z | 22° 57' S to 16° 55' N; 25° 8' W to 14° 30' E | Click for more |
Project Database
No data currently held for this cruise in the BODC Project Database
