NERC Data Catalogue Service
The record of track and size evolution of giant iceberg B31 from Pine Island Glacier, November 2013-July 2015
The data set contains information on the position, and occasionally dimensions, of giant Antarctic iceberg B31 over the period from its calving in November 2013, until July 2015. This used a range of satellite sensors, both visible and microwave.
The columns are: year (A), date in Julian day of that year (B), area of B31, in km2 (C), major axis of B31, in km (D), minor axis of B31, in km (E), perimeter of B31, in km (F), latitude and longitude, in degrees from the Greenwich Meridian (G & H) and satellite source of data (I).
NERC grant reference(s): NE/L010054/1 and NE/M007820/1
Simple
- Date (Creation)
- 2016-02-11
- Date (Revision)
- 2016-02-11
- Date (Publication)
- 2016-02-11
- Date (released)
- 2016-02-11
- Edition
- None
- Unique resource identifier
- https://doi.org/10.5285/d30db85e-5e7a-4861-af56-b893bf2862b1
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/00873
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/L010054/1
- Codespace
- award
- Unique resource identifier
- NE/M007820/1
- Codespace
- award
- Other citation details
- Please cite this item as: Bigg, G., & Wilton, D. (2017). The record of track and size evolution of giant iceberg B31 from Pine Island Glacier, November 2013-July 2015 (Version None) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/d30db85e-5e7a-4861-af56-b893bf2862b1
- 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
- Theme
-
- B31
- Iceberg
- MODIS
- Pine Island Glacier
- SAR
- Place
-
- Amundsen Sea Antarctica
- GEMET - INSPIRE themes, version 1.0
- Access constraints
- otherRestrictions Other restrictions
- 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
- This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- No restrictions apply.
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Climatology, meteorology, atmosphere
- Environment
))
- Begin date
- 2013-11-15
- End date
- 2015-07-30
- 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/
- Units of distribution
- bytes
- Transfer size
- 1
- OnLine resource
-
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- Hierarchy level
- dataset Dataset
- Statement
-
Methodology:
The data was obtained from a set of MODIS visible imagery (named 'Worldview' in the 'source' column) and a range of Synthetic Aperture Radar (SAR) microwave images from the TerraSAR-X and Radarsat satellites. The SAR images were only available occasionally, and a roughly fortnightly acquisition target was sought - this was reduced during the austral winter when the satellites are often used on specialised missions. However, the area, perimeter, major (maj) and minor (min) axes were calculated in these instances. On a daily basis during the daylit period of September-April visible imagery was also examined. If B31 was visible its position was noted, and when a, rare, clear view of the iceberg was available dimensional information was calculated. However, the resolution of the visible imagery was 250 m, while the SAR imagery was 20-50 m, depending on satellite mode, leading to more confidence in size estimates from the SAR imagery. The dimensional calculations used the ITSARI algorithm (Silva and Bigg, 2005), although very occasionally ARCMAP estimates were required if reflective conditions were not suitable for ITSARI.
See: Silva, T. A. M., and G. R. Bigg, 2005, Computer-based identification and tracking of Antarctic icebergs in SAR images, Rem. Sens. Environ., 94: 287-297.
- File identifier
- d30db85e-5e7a-4861-af56-b893bf2862b1 XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2016-02-11
- 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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