Change Detection around the West Antarctic Coastline between 1997 and 2001 using Satellite Derived Images (2008)
Type of ContentTheses / Dissertations
Degree NamePostgraduate Certificate in Antarctic Studies
The Southern Ocean and the area of the Antarctic Ice Sheet are intrinsically linked to global climate; and changes in shape and extent of the Antarctic Ice Shelf may be diagnostic indicators of climate change. The recent recession of ice shelves around the West Antarctic coastline has been subject to major scrutiny by glaciologists and the media. This project aims to reveal the recent changes in area along the West Antarctic coastline that have not yet been measured. This change detection was analysed, using ENVI and ArcGIS software, around the West Antarctic coastline in 1997 and in 2001. The most recent satellite image of Antarctica, Landsat Image Mosaic of Antarctica completed in 2007, was compared to the Radarsat Image Mosaic of Antarctica (1997). Measurements of changes in area revealed that retreat and break up of the larger ice shelves (37,341.85 km2 ) in the region was the most prominent change. The Ronne Ice Shelf unexpectedly retreated the most, followed by the Ross Ice Shelf, the Northern Larsen Ice Shelf and the Thwaites Glacier. Sea ice expanded by a total of 35,806.78 km2 . In addition, iceberg and ice shelf advance were investigated. The change detection results closely correlate with climate change records taken from nearby Antarctic stations. During the four-year study period the temperature increased by one-degree Celsius. It can be concluded that ice shelves are an indicator of climate change in the region.
RightsAll Rights Reserved
Showing items related by title, author, creator and subject.
Visually framing press freedom and responsibility of a massacre: Photographic and graphic images in Charlie Hedbo’s newspaper front pages around the world Gustafson, K.; Kenix, L.J. (University of Canterbury. School of Language, Social and Political SciencesUniversity of Canterbury. Media and Communications, 2015)This research examines 441 front-page images published in 367 newspapers on the day following the shooting in Paris of twelve people at or near the satirical magazine to understand how mainstream media visually frame ...
The influence of an Antarctic ice shelf on land-fast sea ice detected by in-situ and satellite measurements. Brett, Gemma Marie (University of Canterbury, 2020)In proximity to ice shelves, the growth of land-fast sea ice can be influenced by meltwater in the upper surface ocean originating from basal melting. In the western Ross Sea, strong southerly winds advect sea ice offshore ...
Can SMOS Ocean Salinity Data Detect a Link Between Increasing Antarctic Sea Ice Extent and Freshwater Flux from Basal Melting of Antarctic ice shelves? Schroeter, Serena (2015)The drivers behind the observed trend of increasing Antarctic sea ice extent are not yet well understood, though several potential drivers have been identified, such as the increased input of freshwater into the Southern ...