Hinteres Langtalkar Rock Glacier (Carinthia, Austria):

Hinteres Langtalkar Rock

The Hinteres Langtalkar rock glacier (12°45'56" E, 46°58'53" N) is located in the Schober group of the Hohe Tauern range within the boundaries of the Austrian Hohe Tauern National Park. The rock glacier is situated in the Hinteres Langtal cirque. The foot of the front slope is located at 2460 m a.s.l. The northern lobe of the rock glacier is 850 m long and 200 m wide. This highly active part of the rock glacier is in contrast to the rather inactive southern, smaller part of the rock glacier. The latter is characterized by a sequence of adjacent ridges and furrows, which typically relates to compressive flow. At the rooting zone of both parts of the rock glacier marked depressions are present. Further information about the geographical setting and results of geological and hydrological investigations can be found in Lieb (1987) and Krainer & Mostler (2001), respectively. The Hinteres Langtalkar rock glacier is very interesting from a geomorphological point of view, since the lower end of the rock glacier tongue has moved into steeper terrain. A sliding process has started as early as 1992, as the strength of the ice/rock mixture could no longer resist gravitational forces. This phenomenon was identified for the first time in aerial photographs of 1997.

References (selected):

Time-series analysis (animations)

                  Langtalkar rock glacier
                  Langtalkar rock glacier 2006
horizontal movement
1954 - 2006
horizontal movement
  2002- 2006

Animation of rock glacier movement: https://www.staff.tugraz.at/viktor.kaufmann/animations.html#Hinteres_Langtalkar_rock_glacier

For more information on rock glacier kinematics, please see http://www.staff.tugraz.at/viktor.kaufmann/Hinteres_Langtalkar_Rock_Glacier/

last update: february 11, 2021

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