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WAC.3

Temporary protective measures against avalanches have grown enormously in importance over the past few years. Compared to permanent constructional mitigation measures, today controlled-release of avalanches in small portions from the avalanche fracture zones are being introduced increasingly. 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.

We offer different avalanche detection systems:

  • Monitoring of larger areas from a central location (IDA®)
  • Systems for specific and exact monitoring of individual avalanche paths (LARA®)
  • Systems for pure verification directly close to the blasting installation (SARA®)
  • Geophone sensing units monitor avalanche activities in specific avalanche paths (GINA®)

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.

detektion-wyssen-all

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

 Enables the monitoring of avalanche activities in specific avalanche paths

Systems for specific and exact monitoring of individual avalanche paths

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

Systems for pure verification directly close to the blasting installation

Category Preventive Avalanche triggering Alarm systems Avalanche warning
Detection system Verification of the releasing result Closing traffic lines in case of an event Verification of the avalanche forecast
IDA® Infrasound Detection of Avalanches depends on distance n.a. very good
LARA® Long Range Avalanche Radar good very good possible
SARA® Short Range Avalanche Radar very good n.a. possible
GINA® Geophones in Avalanches good very good possible
Mechanical Systems: Rip cord, rope with pendulums very good
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