Avalanche Detection Overview

Can you see the avalanche?
Our Ladies do
at any time, even at night!
...day and night 24/7,
in any weather...
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total avalanches were detected by Wyssen detection systems worldwide in the 2023/24 winter season

Modern remote-controlled blasting installations allow triggering even during snowfall or in the night if necessary. Naturally, with this benefit, the requirements for detection systems that are independent of visibility for verification of successful blasting are also increasing. Furthermore, when avalanches are registered, alarms can be set off and transport routes blocked with traffic lights as well as general information collected about avalanche activity, which could give important indications for avalanche warning. Thanks to technological advances in recent years, reliable and low-maintenance systems for monitoring and alarming are available:

Overview of avalanche detection Wyssen:

The data are visualized, documented and archived on the web-based platform WAC.3® and gives the avalanche commission a simplified overview as a basis for decision-making.

Lawinendetektion Übersicht
Lawinendetektion Lia

Laser Impulse Snow Height Acquistion

3D Laser measurement of changes in the snow accumulations in the avalanche release area

Lawinendetektion Gina

Geophones in Avalanches

Enables the monitoring of avalanche activities in specific avalanche paths

Lawinendetektion Lara

Long Range Avalanche Radar

Systems for specific and exact monitoring of individual avalanche paths

Infrasound Detection System

Large area monitoring for the verification of the avalanche forecast and avalanche control as well as an early warning index when the general avalanche activity is rising

People Tracking Radar

To monitor endangered areas in order to make sure no people are exposed to controlled released avalanches if visibility is poor

Application and Comparison Detections systems

Detection system Verification of the releasing result Closing traffic lines in case of an event Verification of the avalanche forecast
LIA® Laser Impulse Snow Height Acquisition very good n.a. possible
GINA® Geophones in Avalanches good very good possible
IDA® Infrasound Detection depends on distance n.a. very good
LARA® Long Range Avalanche Radar good very good possible
Mechanical Systems: Rip cord, rope with pendulums very good

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