BGS Hosted Metadata
Aeromagnetic survey across the Brunt Ice Shelf, 2017
This data set contains aeromagnetic data collected opportunistically during an airborne radar survey of the Brunt Ice Shelf as part of the NERC/BAS Life Time of Halley project. The survey was flown draped with an average height above the ice surface of 420m, and includes 4716 km of new data. The aircraft used was the BAS aerogeophysically equipped twin otter VP-FBL. Data are available include all data streams from raw to fully processed, following the ADMAP 2 naming convention, and are provided in both Geosoft database (.gdb) and ASCII file formats (.xyz). Base station data is also provided.
Simple
- Date (Creation)
- 2018-03-16
- Date (Revision)
- 2018-03-16
- Date (Publication)
- 2018-03-16
- Date (released)
- 2018-03-16
- Edition
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None
- Unique resource identifier
- https://doi.org/10.5285/410ee2f9-2d22-4155-aaed-43b93a7c3d62
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01072
- Codespace
- Other citation details
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Please cite this item as: Jordan, T., Corr, H., & Robinson, C. (2018). Aeromagnetic survey across the Brunt Ice Shelf, 2017 (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK. https://doi.org/10.5285/410ee2f9-2d22-4155-aaed-43b93a7c3d62
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Jordan, Tom
Author British Antarctic Survey Corr, Hugh
Author British Antarctic Survey Robinson, Carl
Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Antarctica
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Brunt Ice Shelf
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Coats Land
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Geophysics
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Magnetic
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- Place
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Brunt Ice Shelf, Coats Land, East Antarctica Antarctica
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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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/
- Use constraints
- 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 both the data and literature reference in any publication as follows:
DATA REFERENCE
Jordan, T., Corr, H. & Robinson, C. "Aeromagnetic survey across the Brunt Ice Shelf, 2017" (2018) Polar Data Centre, Natural Environment Research Council, UK Research & Innovation, UK
doi:10.5285/410ee2f9-2d22-4155-aaed-43b93a7c3d62
LITERATURE REFERENCE
Jordan and Becker 2018 In prep.
2. The user recognizes the limitations of data. 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.
- Use constraints
- Other restrictions
- Other constraints
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No restrictions apply.
- Unique resource identifier
- doi
- Codespace
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doi
- Association Type
- Cross reference
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- dependency
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
- Geoscientific information
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- Begin date
- 2017-01-09
- End date
- 2017-01-14
- Supplemental Information
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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
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
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6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Units of distribution
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bytes
- Transfer size
- 1
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show/?entryid=410ee2f9-2d22-4155-aaed-43b93a7c3d62 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Raw line aeromagnetic data from the 2017 Brunt Survey were corrected for the regional geomagnetic field (IGRF) and diurnal variations recorded by the Halley VI magnetic fluxgate base station. Base station corrections were filtered with a 30 minute filter to ensure short wavelength signals, likely only seen at the base station, were not transferred to the airborne dataset. Additional corrections for offsets induced by aircraft operations and flight heading direction were also applied. Note magnetic compensation was not carried out as the opportunistic nature of the dataset did not allow for a suitable calibration flight.
To further improve the levelling of the 2017 Brunt aeromagnetic survey data from ICEGRAV 2013 survey (Forsberg et al., 2017) was also considered, but is not included in this data download. Magnetic data from both surveys were continued to a common altitude of 500m. To minimize errors due to downward continuation data were filtered with a low pass filter two times the downward continuation distance. After continuation the data were statistically levelled to minimize survey to survey offsets and residual errors along individual lines.
Data collection:
Data was collected using the BAS aerogeophysicaly equipped twin otter VP-FBL. Magnetic data was collected using wing tip mounted Scintrex CS-3 High Sensitivity Cs magnetometers. Data was recorded at 10 Hz on a PicoEnvirotec logging system, before being decimated to 1 Hz for subsequent processing. Additional base station information from a calibrated long-term fluxgate sensor at Halley Station was used during data processing.
Data quality:
The standard deviation of the crossover error of the final statistically levelled dataset was 8.21 nT for 313 intersections, after removing 9 anomalously high (>30 nT) crossover values.
Resolution: The line spacing for the main survey area is 5km, with regional lines spaced ~18 km apart. The provided data is sampled at 1Hz, which equates to a 60m along track sample spacing.
Metadata
- File identifier
- 410ee2f9-2d22-4155-aaed-43b93a7c3d62 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2018-03-16
- Metadata standard name
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ISO 19115 Geographic Information - Metadata
- Metadata standard version
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ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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