Item: Use of Ground Based INSAR Radar to Monitor Glide Avalanches
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Title: Use of Ground Based INSAR Radar to Monitor Glide Avalanches
Proceedings: International Snow Science Workshop 2016 Proceedings, Breckenridge, CO, USA
Authors:
- Ingrid Skrede [ Norwegian Water Resources and Energy Directorate, Stranda, Norway ]
- Lene Kristensen [ Norwegian Water Resources and Energy Directorate, Stranda, Norway ]
- Carlo Rivolta [ Ellegi srl, Milano, Italy ]
Date: 2016-10-02
Abstract: Ground based InSAR radars are commonly used to monitor deformations on rock slopes, using acceleration to predict the risk of failure. During the spring of 2015 and 2016 this method has been tested for glide avalanches at Stavbrekkfonna in Western Norway. The investigations have been part of a research project, and the aim for this particular case study has been to see if ground based InSAR radars can measure displacement on snow surfaces, and if so, to improve the knowledge of the dynamics of glide avalanches in addition to investigate the possibility to predict the time of failure. The preliminary results show that ground based InSAR radars accurately measures displacements and velocity on snow surfaces. Acceleration has been measured before each failure, implying that prediction of such avalanches might be possible. The actual avalanches can also be seen in the radar images, giving the time and duration of the avalanches, in addition to showing the avalanche path. However, more research and experience is needed to provide a reliable warning system.
Language of Article: English
Presenters:
Keywords: Glide avalanche, InSAR, radar, monitoring, Stavbrekkfonna
Page Number(s): 51-57
Subjects: Glide avalanche Interferometric synthetic aperture radar Stavbrekkfonna
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Digital Abstract Not Available
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