Casey Station Footprint GIS Layers, 2002-2018

This dataset contains GIS spatial layers of the medium and heavy disturbance footprint surrounding Casey Research Station at the years 2002, 2008, 2015 and 2018. The footprint mapping used a consistent methodology for digitisation for the years 2002, 2015, and 2018, whereas the year 2008 included ground-truther field measurements. Some variation in the footprint is due to snow cover hiding areas of disturbance. The sources and date of the data used is as follows:• 2018 Casey Heavy Disturbance – digitised by S. Brooks from Worldview-3 imagery, captured 27/1/2018.• 2018 Casey Medium Disturbance – digitised by S. Brooks from Worldview-3 imagery, captured 27/1/2018.• 2015 Casey Heavy Disturbance – digitised by S. Brooks from AAS 5024 UAV-imagery.• 2015 Casey Medium Disturbance – digitised by S. Brooks from AAS 5024 UAV-imagery.• 2008 Casey Heavy Disturbance – produced from data associated with: Brooks, S.T. 2014. Developing a Standardised Approach to Measuring the Environmental Footprint of Antarctic Research Stations. Journal of Environmental Assessment Policy and Management, 16(04), 1450037.• 2008 Casey Medium Disturbance – produced from aerial imagery and field data opportunistically collected in association with: Brooks, S.T. 2014. Developing a Standardised Approach to Measuring the Environmental Footprint of Antarctic Research Stations. Journal of Environmental Assessment Policy and Management, 16(04), 1450037.• 2002 Casey Heavy Disturbance – digitised by S. Brooks from 2002 AADC-held Orthophoto• 2002 Casey Medium Disturbance – digitised by S. Brooks from 2002 AADC-held Orthophoto