BODC Cruise Metadata Report for RRS James Cook (740H) cruise JC132
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 JC132 |
|---|---|
| Short name | JC132 |
| Objectives and Narrative |
The primary objective of RRS James Cook cruise JC132 was to acquire the active-source geophysical data and seafloor imagery to complement the passive recordings of microseisms made by 25 ocean-bottom seismographs (OBS) deployed at the 13°20'N oceanic core complex on the Mid-Atlantic Ridge during JC102 and recovered during JC109.
Four main data types were collected during JC132: wide-angle recordings of airgun shots by up to 58 OBS; multichannel seismic (MCS) reflection data recorded by a 3 km streamer and airgun sources; near seafloor magnetic data and seafloor imagery recorded by Autosub. Gravity and swath bathymetry data were also acquired port-to-port. The swath bathymetry data were calibrated with a sound velocity dip undertaken at the lateral centre of the ocean-bottom seismograph grid; in the same location as sampled during JC102 and JC109. Good quality near-seabed bathymetry and magnetic data, and both wide-angle refraction and normal incidence reflection seismic data were acquired throughout the cruise with which to address the science objectives. |
| Ship | RRS James Cook |
| Departure Port | Mindelo, Cape Verde |
| Departure Date | 2016-01-14 |
| Arrival Port | Port of Spain, Trinidad and Tobago |
| Arrival Date | 2016-02-24 |
| Principal Scientist(s) | Christine Peirce (University of Durham, Department of Earth Sciences), Timothy Reston (University of Birmingham School of Geography, Earth and Environmental Sciences) |
| Responsible Organisation | University of Birmingham School of Geography, Earth and Environmental Sciences |
| Associated Project(s) | The Role and Extent of Detachment Faulting at Slow-Spreading Mid-Ocean Ridges |
| IHB Sea Areas Visited | North Atlantic Ocean |
| Marsden Squares Visited | 39/40/41/42/43 |
| Work Area Description | Central Atlantic |
| 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 | |
|---|---|
| Other physical oceanographic measurements |
Quantity:
number of deployments =
3
Description: Sound velocity / temperature vs depth in three locations. |
| Geology and geophysics | |
| Gravity measurements |
Quantity:
activity duration in days =
42
Description: Gravity run continuously from Cape Verde to study area to Trinidad |
| Magnetic measurements |
Quantity:
number of profiles =
1
Description: Magnetics recorded during multichannel seismic profiles (G76) and from AUV (G90) near-seafloor transects |
| Multi-beam echosounding |
Quantity:
activity duration in days =
42
Description: Swath bathymetry during all seismic profiles and during transit to-from the work area |
| Multichannel seismic reflection |
Quantity:
number of profiles =
27
Description: Multichannel seismic data between 13 40N - 12 00N; 44 30 - 45 30 W |
| Other geological/geophysical measurements |
Quantity:
number of profiles =
1
Description: Eh, Turbidity, microbathymetry and near seafloor magnetics collected by AUV Autosub 6000 in work area around 13 20'N |
| Seismic refraction |
Quantity:
number of deployments =
68
Description: Ocean bottom seismograph |
Cruise Inventory Mooring/Buoy Operations
No information on datasets is currently available
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 Solar Radiation Visible waveband radiance and irradiance measurements in the atmosphere Wind strength and direction |
| 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 Salinity of the water column Temperature of the water column Transmittance and attenuance of the water column |
| 1 | Single-beam echosounder |
Bathymetry and Elevation Date and time Horizontal platform movement Horizontal spatial co-ordinates Platform or instrument orientation |
| 3 | Sound Velocity Probe |
Reference numbers Sound velocity and travel time in the water column Vertical spatial coordinates |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
Full List
| BODC Reference | Instrument Description | Date/Time | Location | |
|---|---|---|---|---|
| 1760567 | Single-beam echosounder | 2016-01-14 07:28Z to 2016-02-24 16:36Z | 10° 36' N to 16° 54' N; 61° 43' W to 25° 0' W | Click for more |
| 1760579 | Meteorological data logger | 2016-01-14 07:28Z to 2016-02-24 16:36Z | 10° 36' N to 16° 54' N; 61° 43' W to 25° 0' W | Click for more |
| 1760580 | Multiple instrument types | 2016-01-14 07:28Z to 2016-02-24 16:36Z | 10° 36' N to 16° 54' N; 61° 43' W to 25° 0' W | Click for more |
| 1899938 | Sound Velocity Probe | 2016-02-11 20:26Z | 13° 15' N, 44° 53' W | Click for more |
| 1899951 | Sound Velocity Probe | 2016-01-15 07:57Z | 16° 17' N, 29° 14' W | Click for more |
| 1899963 | Sound Velocity Probe | 2016-01-19 06:37Z | 13° 25' N, 44° 52' W | Click for more |
Project Database
No data currently held for this cruise in the BODC Project Database
