First Results on Monitoring Glacier Dynamics with the Aid of Terrestrial Laser Scanning on Pasterze Glacier (Hohe Tauern, Austria)

Graz

2006

S. 27-36

5 Abb., 19 Lit. Ang.

Artikel aus einer ZeitschriftUnselbständiges Werk

200143488

Terrestrial laser scanning is a quite new technique for glacier monitoring. Long-range laser scanners are able to acquire high-resolution 3D data of surface structures. They can achieve measuring distances up to a few kilometres of range with accuracy in the range of a few centimetres. We report on an integrated system that is capable of describing 3D motion and deformations of glacier (especially glacier fronts) within a single dayĘs measurement campaign, including logistics and evaluation. The Pasterze glacier in the Hohe Tauern National Park (Central Alps, Austria) has been monitored during the last years beginning with 2001. Results give a clear picture of comprehensive modifi cations of the entire area. At least three zones of a collapsing of the ice body are detectable as well as a different behaviour of the bare ice and debris covered glacier tongue. Surface elevation changes in paraglacial areas such as adjacent slopes and newly developed kame terraces are available area wide for further analyses.