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
Point of contact
Organisation name Individual name Electronic mail address Role
British Antarctic Survey Fremand, Alice Author
Centre for Environment, Fisheries and Aquaculture Science

Pettafor, Alison

 		Author

UK Hydrographic Office

Evans, Daniel

 		Author
British Antarctic Survey

Howard, Floyd

 		Author
British Antarctic Survey Morley, Simon Author
Centre for Environment, Fisheries and Aquaculture Science Bell, James Author
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

Point of contact
Maintenance and update frequency
As needed
Maintenance note
Completed
Global Change Master Directory (GCMD) Science Keywords
Theme

  • Bathymetry

  • Multibeam

  • Tristan da Cunha
Place

  • Tristan da Cunha South Atlantic Ocean

GEMET - INSPIRE themes, version 1.0
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no limitations to public access
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no limitations
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Open Government Licence v3.0
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This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

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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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None
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url
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url
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Cross reference
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doi
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doi
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doi
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doi
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doi
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doi
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url
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url
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url
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url
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url
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url
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url
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url
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Spatial representation type
Text, table
Language
English
Character set
UTF8
Topic category
  • Elevation
  • Geoscientific information
N
S
E
W
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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.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
Date (Publication)
2008-11-12
Cited responsible party
Organisation name Individual name Electronic mail address Role

European Petroleum Survey Group

EPSGadministrator@iogp.org

Publisher
Unique resource identifier
urn:ogc:def:crs:EPSG::3031
Version

6.18.3

Distributor

Distributor contact
Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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application/x-hdf
application/zip
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1932735283
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WWW:LINK-1.0-http--link

 		https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=181c6078-b470-4382-9425-bb8329e45d94

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 		https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=181c6078-b470-4382-9425-bb8329e45d94

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bytes
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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.

Metadata

File identifier
181c6078-b470-4382-9425-bb8329e45d94 XML
Metadata language
English
Character set
UTF8
Hierarchy level
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)
Metadata author
Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

polardatacentre@bas.ac.uk

Point of contact
 
 

Overviews

Spatial extent

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Keywords

Bathymetry Multibeam Tristan da Cunha
GEMET - INSPIRE themes, version 1.0

Oceanographic geographical features
Global Change Master Directory (GCMD) Science Keywords

EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography 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


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