BGS Hosted Metadata
Processed high resolution line aeromagnetic data over Pine Island Glacier Ice Shelf (2010-2011)
In 2011, aerogeophysics data were acquired over Pine Island Glacier, West Antarctica on a grid comprising 30 transverse lines across the glacier, each around 20 km long, and with a spacing of roughly 500 m between the lines. The orientation of the lines was selected to be perpendicular to the surface features visible in satellite images in the central part of the ice shelf. Elevation of the ice-surface directly beneath the aircraft was simultaneously measured using a nadir-pointing laser altimeter.
We present here the processed line aeromagnetic data acquired using scintrex cesium magnetometers mounted on the BAS aerogeophysical equiped Twin Otter.
Data are provided as XYZ ASCII line data.
Simple
- Date (Creation)
- 2020-06-30
- Date (Revision)
- 2020-06-30
- Date (Publication)
- 2020-06-30
- Date (released)
- 2020-06-30
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/84b382c3-6b6f-4524-9807-ec7941e5620d
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01355
- Codespace
- Other citation details
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Please cite this item as: Jordan, T., & Ferraccioli, F. (2020). Processed high resolution line aeromagnetic data over Pine Island Glacier Ice Shelf (2010-2011) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/84b382c3-6b6f-4524-9807-ec7941e5620d
- 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 Ferraccioli, Fausto Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Aerogeophysics
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Aeromagnetics
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Antarctica
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- Place
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Pine Island Glacier Ice Shelf 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 the data in any publication as follows:
Jordan, T., & Ferraccioli, F. (2020). Processed high resolution line aeromagnetic data over Pine Island Glacier Ice Shelf (2010-2011) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/84B382C3-6B6F-4524-9807-EC7941E5620D
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.
- Unique resource identifier
- url
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url
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- Cross reference
- Unique resource identifier
- url
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url
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doi
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doi
- Association Type
- Cross reference
- Unique resource identifier
- doi
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doi
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Geoscientific information
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- Begin date
- 2011-01-13
- End date
- 2011-01-17
- 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
- Distributor format
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Name Version text/plain
- Units of distribution
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bytes
- Transfer size
- 6291456
- 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=84b382c3-6b6f-4524-9807-ec7941e5620d Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Details on survey design and the PIG mouth aeromagnetic data collection are presented in Vaughan et al. (2012). The dataset available here includes all channels from raw through to levelled, and microlevelled products. Channel naming follows SCAR/ADMAP2 data release protocols, although the order of processing steps differs from that outlined by ADMAP2 documentation.
Also included in the database is a subset of lines from the BBAS survey of the catchment of Pine Island glacier. This subset includes three flow-parallel tie lines and shorter line segments roughly transverse to flow. These lines have been levelled to the high resolution grid of the PIG mouth survey, but not included in microlevelling given their contrasting orientation.
Magnetic data channels and processing flow:
MagR- Raw magnetic total field intensity data (nT).
MagC- Raw magnetic total field intensity data (nT) compensated for aircraft roll, pitch and yaw using PicoEnvirotec software.
TCorr- Tiptank corrections (nT). These include DC shifts and gradients due to aircraft noice, etc. Dummy values if not applicable.
RefField- Geomagnetic reference field value for which the magnetic data has been compensated. IGRF model 2010 as implemented in Geosoft (nT).
MagRTC- Compensated magnetic data corrected for tiptank events and the geomagnetic reference field. MagRTC= MagTCorr- RefField
BCorr- Base station measured geomagnetic field variations. A base station was not used in the PIG mouth survey hence no BCorr has been applied.
ACorr- MagRTC filtered using a low pass filter with a cut-off length of 15 fiducials to account for any remnant noise in the data.
SCorr- Any DC shift applied. A +12 nT shift has been applied to P lines in the database to adjust their level to that of the rest of the survey.
MagF- Final mag value before levelling. MagF= MagRTC- SCorr- ACorr
MagL- Statistically levelled mag data.
MagML- Microlevelled magnetic data following technique of (Ferraccioli et al., 1998). Note tie lines are not included in the microlevelled data channel.
Basic channel description:
Line name Line Number
Flight ID Sequential flight number
x x projected meters*
y y projected meters*
Lon Longitude WGS 1984,
Lat Latitude WGS 1984,
Height_WGS1984 Aircraft altitude (meters) in WGS 1984,
Date Date of flight in time format e.g. 2006/01/08
Time Time (UTC) of flight e.g. 23:52:42.0
*Projected coordinates (x and y) are in Polar Stereographic:
Latitude of natural origin: -71
Longitude of natural origin: 0
Scale factor at natural origin: 0.994
False easting 0
False northing 2072760.109
Positioning for the PIG mouth survey used a dual-frequency carrier-phase GPS (Vaughan et al., 2012). Positions are calculated for the phase centre of the aircraft antenna. All positions (Lat, lon and height) are referred to the WGS1984 ellipsoid.
Aeromagnetic data acquired as part of BBAS project in 2004 was used for levelling. See related dataset: https://doi.org/10.5285/485e6b9b-d033-441f-8c98-b2d0efcb1d63
Data quality:
No values are given for MagC, BCorr, and MagBRTC. No base station was run, and no compensation was carried out.
Metadata
- File identifier
- 84b382c3-6b6f-4524-9807-ec7941e5620d XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2020-06-30
- 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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