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Isis remotely-operated vehicle (ROV) bathymetry data in Marguerite Trough, Antarctica, from James Clark Ross cruise JR157, 2007

On cruise JR157 the Isis ROV was deployed on 15 dives in the Marguerite Trough area in January and February 2007. We present here the data acquired during dives 10 and 11. Dives 10 and 11 targeted a bedrock channel system on the inner continental shelf to investigate channel incision processes and the history of glaciation in the area. The plan was to map parts of the channel walls and thalweg, and then to use these data to locate the best coring sites within the channel system. In reality, several small patches of bathymetric data were acquired from the channels by a multibeam echosounder mounted on the ROV.

This research was funded by UK Natural Environment Research Council grant AFI06/14 (NE/C506372/1) to J.A. Dowdeswell, R.D. Larter and G. Griffiths.

Simple

Alternate title
Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01585
Date (Publication)
2021-11-23
Identifier
http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01585
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  Polar Data Centre,Natural Environment Research Council,UK Research & Innovation - Dowdeswell, Julian;Larter, Robert;Noormets, Riko;Griffiths, Gwyn;Hogan, Kelly
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography
  • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
BAS Free-text keywords
  • Antarctica
  • Bedrock channels
  • Isis ROV
  • Marguerite Trough
  • Remotely-operated vehicle
  • bathymetry
  • multibeam
Use limitation

This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)

Further by downloading this data the user acknowledges that they agree with the NERC data policy (http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite the data

Dowdeswell, J., Larter, R., Noormets, R., Griffiths, G., & Hogan, K. (2021). Isis remotely-operated vehicle (ROV) bathymetry data in Marguerite Trough, Antarctica, from James Clark Ross cruise JR157, 2007 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/EF1996E4-7825-4456-B1F7-4D1B26531D72

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

Access constraints
otherRestrictions Other restrictions
Other constraints

This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)

Further by downloading this data the user acknowledges that they agree with the NERC data policy (http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite the data

Dowdeswell, J., Larter, R., Noormets, R., Griffiths, G., & Hogan, K. (2021). Isis remotely-operated vehicle (ROV) bathymetry data in Marguerite Trough, Antarctica, from James Clark Ross cruise JR157, 2007 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/EF1996E4-7825-4456-B1F7-4D1B26531D72

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

Metadata language
EnglishEnglish
Topic category
  • Elevation
  • Geoscientific information
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Begin date
2007-01-29
End date
2007-01-31
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
OnLine resource
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=ef1996e4-7825-4456-b1f7-4d1b26531d72
Hierarchy level
dataset Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date
Explanation
See the referenced specification
Pass
No
Statement

Quality of the multibeam bathymetric data was variable with some pervasive issues relating to vehicle motion (pitch/roll artefacts) and positioning during acquisition. Position error of the ROV exceeded the possible bathymetric grid size. The Isis ROV used ultra-short baseline (USBL) to obtain frequent absolute positions (each with rms error of 5 m) to correct for positional inaccuracies. Some raw data files did not import into the Caraibes software thus not all bathymetry data could be processed and included in the final grids.

Gridded multibeam bathymetry data have horizontal square grid cell sizes of 0.25 ? 0.5 m.

File identifier
GB_NERC_BAS_PDC_01585 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2021-11-23
Metadata standard name
NERC profile of ISO19115:2003
Metadata standard version
1.0
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/01585
 
 

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