Fra: NGIInfo | Opprettet: 10. mai 2011
Determining volume, path, and erosional force of a snow avalanche is an active topic of research at NGI, primarily in the Natural Hazards Division. In order to develop sophisticated models and accurate simulations advanced data collection operations and techniques are required.
At the NGI avalanche test site at Rygfonn, near Stryn in Western Norway, the world first long range snow and ice scanner was deployed (Optech Ilris LR). The above video illustrates the challenges of working in such conditions and systems required to complete a single 3d lidar survey.
The video shows both the blasting tower that is used to activate radio controlled explosives that are designed to generate avalanches and the survey station in which the lidar data were collected.