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Worksheet introduction 
The Ny Ålesund village and its airstrip are seen in the centre-left of the image. The big glacier system to the right is the Kronebreen. Kronebreen and its connected neighbours have an icefront in the sea. The Kronebreen glacier is one of the largest and fastest-flowing glaciers of Svalbard. Close to its calving front in the sea the ice flows a distance of up to 800 m per year, which is several metres per day. Besides this large glacier system, a number of small glaciers are situated on the peninsula to the left, close to Ny Ålesund. Purpose of the exercises You will use three radar images of the area (Images_Glaciers.zip): one was taken in winter, one in spring, and one in late summer. By comparing these three images you will see how snow and ice differently reflect radar signals depending on their current conditions. You will then be able to assess if it is possible to map snow and ice properties from radar images. You can also use a Landsat image of the area, but the data does not perfectly overlap because the ASAR and Landsat sensors have a different sensor geometry. ASAR uses a radar antenna, whereas Landsat uses a scanning digital camera. Last update: 23 January 2014
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