Item: 8 years experience in avalanche detection by using a Pulse Doppler Radar
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Title: 8 years experience in avalanche detection by using a Pulse Doppler Radar
Proceedings: International Snow Science Workshop Proceedings 2018, Innsbruck, Austria
Authors:
- Richard Koschuch [ IBTP Koschuch e.U., Langegg 31, 8483 Leutschach, Austria ]
Date: 2018-10-07
Abstract: Nowadays, artificial release of avalanches for road and slope safety is very common. To do so safely, a reliable detection and monitoring system in any weather and light condition (rain; snowfall, fog, wind, night etc.) is required. Parameters for detecting and characterizing avalanches are volume, mass and the velocity distribution. A known technology to measure velocities very accurate is the RADAR-Technology using the Doppler-Effect on moving objects. The RADAR cross-section of an object for a given wavelength is a function of the magnitude, material, incident and reflecting angle, which determines the scattered intensity. Therefore, this reflected intensity is a parameter that belongs to the cross section of the moving volume of the detected object. So, RADAR-technology is able to measure both magnitude and the velocity distribution. It is also needed, that a monitoring and alarming system should detect all events without missing one and it should of course detect only events and minimize false alarms. According to the "Projekt Lawinendetektion Schlussbericht" (Lussi et al., SLF, 2012) of all known technologies only the Radar can fit all this needs. Till now there have been Radars of this type running for years in Ischgl, Kappl, Feichten, St. Leonhard, Sölden and hundreds of sponta - neous and triggered avalanches are detected so far. After the first season of each installation of a Radar the trigger levels can be adjusted so, that the detection quote is nearly 100% (even for the smallest avalanches) and the false alarm quote goes to 0 %.
Object ID: ISSW2018_O07.12.pdf
Language of Article: English
Presenter(s):
Keywords: Avalanche Radar, Avalanche Detection, Alarming System, Monitoring System
Page Number(s): 636-639
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