Geometry and paleo-ice content of rock glaciers in the southeastern Alps (NE Italy – NW Slovenia)

Chiara Boccali, Manja Zebre, Renato R. Colucci

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Abstract

Rock glaciers in the southeastern Alps of Slovenia and Italy have been mapped in detail using high resolution digital elevation model and orthophotos, supported by field-based observations. A total of 52 rock glaciers with an area of 3.40 km2 have been delineated on a rock glacier map, divided in 18 sections at a scale of 1:15,000. Several geometrical parameters of rock glaciers have been calculated and their activity degree has been inferred. 90% of rock glaciers have been classified as relict, while the rest are assumed to be of uncertain activity and might still contain some ice. The volumetric ice content and water volume equivalent of the studied rock glaciers for the period of their activity has been calculated to 0.055 ± 0.011 km3 and 0.049 ± 0.010 km3, respectively, which is very close to the ice volume of glaciers reconstructed for this area during the little ice age to 0.069 km3.
Original languageEnglish
Pages (from-to)346-355
Number of pages10
JournalJournal of Maps
Volume15
Issue number2
DOIs
Publication statusPublished - 26 Apr 2019

Keywords

  • Periglacial landforms
  • Rock glacier
  • Volume/area scaling
  • Water content

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