A GIS-based glacier inventory for the Antarctic Peninsula and the South Shetland Islands —A first case study on King George Island |
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Authors: | Matthias Braun F Rau Jefferson Cardia Simões |
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Institution: | 1. Institut für Physische Geographie, Albert-Luowigs-Universit?t Freiburg, Werderring 4, D-79085, Freiburg, Geronary
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Abstract: | The aim of the international project “Global Land Ice Measurements from Space (GLIMS)” headed by the US Geological Survey
is to establish a world wide glacier inventory based on satellite imagery. This data set will form a first digital baseline
study for future glacier monitoring. The presented GIS-based glacier inventory for King George Island is a case study for
the area of the Antarctic Peninsula. In the database of the glacier inventory topographic information, specific glaciological
parameters as well as metadata will be included. The topographic data consists of drainage basin limits, basin areas, altitudinal
ranges, perimeters and mean lengths. Glaciological data sets should comprise information on glacier retreat in different periods,
glacier velocities, ice thickness and bedrock topography as well as derived parameters. Modelled and measured mass balance
parameters could be included as additional data layers. In particular, these metadata records must comprise background information
on data accuracy and data sources and should be compatible with a future data model for the King George Island GIS (KGIS).
Three examples illustrate that the GLIMS database will not only contain information valuable for glaciological applications,
but also other environmental studies on the island will benefit from this standardised remote sensing data sets. Therefore,
a very close link between the data models of KGIS and GLIMS has to be established to enable these synergisms. Finally, better
access to historic aerial photography would enable a continuous record of glacier retreat from the beginning of the 1950's
onward. |
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Keywords: | King George Island South Shetland Islands geographic information system glacier inventory glacier retreat glacier parameters |
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