Item: Visualization and Analysis of the Swiss Avalanche Bulletin Using GPS
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Title: Visualization and Analysis of the Swiss Avalanche Bulletin Using GPS
Proceedings: Proceedings of the 1996 International Snow Science Workshop, Banff, Canada
Authors:
- Heiri Leuthold [ Division of Spatial Data Handling, Department of Geography, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland ]
- Britta Allgower [ Division of Spatial Data Handling, Department of Geography, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland ]
Date: 1996
Abstract: For the visualization of the (verbal) Swiss avalanche bulletin a GIS prototype was developed which aims at the prediction of the local avalanche hazard in a scale of 1:25'000. For this purpose weight factors are derived from the actual bulletin concerning the bulletin hazard level, the critical values for altitude, slope and aspect. Main input data is a high resolution digital terrain model (25 x 25 meters). As GIS-Software ARC/INFO 7.04 was used and in particular its raster data module GRID. The prototype is based on AML-scripts and is completely menu driven. Whenever a new bulletin appears the GIS-based calculations can be performed within a few minutes and be used to adjust the accuracy of the bulletin before its release. The evaluation of the prototype will take place during winter 1996/97; it includes the comparison of the predicted avalanche hazard and observed avalanches as well as statistical tests.
Object ID: issw-1996-035-040.pdf
Language of Article: English
Presenter(s): Unknown
Keywords: avalanche bulletin, geographic information systems (gis), hazard mapping, visualization
Page Number(s): 35-40
Subjects: geographic information system (gis) avalanche hazard avalanche forecasting
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