NERC Data Catalogue Service
Gridded bathymetric compilation of Tristan da Cunha from multibeam echosounder data collected by multiple vessels (1996-2019)
We present a new gridded bathymetric compilation around Tristan da Cunha here defined by the following bounding box: 5 to 16.8W, 33 to 43.5S.
This bathymetry grid was compiled from a variety of multibeam swath bathymetry data acquired during 7 different cruises (see lineage). The data is available as a grid of 0.001 degrees resolution in three different formats: NetCDF, ArcView ASCII and GeoTIFF formats using geographic coordinates on the WGS84 datum.
This grid is an output of the UK FCDO 'Blue Belt' program and the following Natural Environment Research Council (NERC) BAS-ODA fundings: NE/R000107/1 and NE/T012439/1.
Simple
- Date (Creation)
- 2021-09-13
- Date (Revision)
- 2021-09-13
- Date (Publication)
- 2021-09-13
- Date (released)
- 2021-09-13
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/181c6078-b470-4382-9425-bb8329e45d94
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01559
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/R000107/1
- Codespace
- award
- Unique resource identifier
- NE/T012439/1
- Codespace
- award
- Other citation details
- Please cite this item as: Fremand, A., Pettafor, A., Evans, D., Howard, F., Morley, S., & Bell, J. (2021). Gridded bathymetric compilation of Tristan da Cunha from multibeam echosounder data collected by multiple vessels (1996-2019) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/181c6078-b470-4382-9425-bb8329e45d94
- Credit
- No credit.
- Status
- completed Completed
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Maintenance and update frequency
- asNeeded As needed
- Maintenance note
- completed Completed
- Global Change Master Directory (GCMD) Science Keywords
-
- EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
- EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
- EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seamounts
- EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth
- EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography
- Theme
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- Bathymetry
- Multibeam
- Tristan da Cunha
- Place
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- Tristan da Cunha South Atlantic Ocean
- GEMET - INSPIRE themes, version 1.0
- Access constraints
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- Other constraints
- no limitations to public access
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- no limitations
- Use constraints
- license License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
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Further by downloading this data the user acknowledges that they agree with the NERC data policy (), and the following conditions:
1. To cite the data
Fremand, A., Pettafor, A., Evans, D., Howard, F., Morley, S., & Bell, J. (2021). Gridded bathymetric compilation of Tristan da Cunha from multibeam echosounder data collected by multiple vessels (1996-2019) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/181C6078-B470-4382-9425-BB8329E45D94
2. The user recognizes the limitations of data and will not use this data for navigation purposes. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.
NOT TO BE USED FOR NAVIGATION
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- otherRestrictions Other restrictions
- Other constraints
- None
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
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- Codespace
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- url
- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Elevation
- Geoscientific information
))
- Begin date
- 1996-04-04
- End date
- 2019-04-01
- Supplemental Information
- It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
Distributor
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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- 1932735283
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- Hierarchy level
- dataset Dataset
- Statement
-
Methodology:
The bathymetry map was compiled from a variety of different data sources. The primary data are multibeam swath bathymetry collected from scientific cruises undertaken by British Antarctic Survey (BAS) but also German and US cruises. The complete list of the cruises used for the compilation is the following:
-RRS James Clark Ross: JR287, JR17004
-RRS Discovery: DY100
-RV MARIA S. MERIAN: MSM20/2 and MSM24
-RV Melville: MV1203
-RV Knorr: KN145L17
The grid was created using the mbgrid program from MB-system version 5.7.6, using the parameters " -E0.001/0.001/degrees! -G4 -A2 -F1 -R-16.8/-5/-43.5/-33" for the Arc/Info and ArcView ASCII grid and " -E0.001/0.001/degrees! -G3 -A2 -F1 -R-16.8/-5/-43.5/-33" for the netCDF file (GMT version 2 GRD file) . This uses a Gaussian weighted mean filter. Bathymetry data is gridded as topography (positive upwards).
Data collection:
Data collected from the following cruises:
-RRS James Clark Ross: JR287, JR17004
-RRS Discovery: DY100
-RV MARIA S. MERIAN: MSM20/2 and MSM24
-RV Melville: MV1203
-RV Knorr: KN145L17
Data quality:
The data has been processed using different software including CARIS and MB-system. Final quality control was undertaken manually to remove any outliers in the source datasets. This involved cleaning much of the raw data using the "mbedit" program from MB-system.
- File identifier
- 181c6078-b470-4382-9425-bb8329e45d94 XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2021-09-13
- Metadata standard name
- ISO 19115 Geographic Information - Metadata
- Metadata standard version
- ISO 19115:2003(E)
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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