[PDF][PDF] Ground-based and satellite interferometric observations of a fast moving rock glacier complex (Ádjet mountain, North Norway)
Permafrost and Periglacial Processes, 2015•academia.edu
Ádjet is a 8-km long mountain ridge situated in the northeast side of the glacial formed
Skibotn valley, northern Norway. The area is part of the Reisa nappe complex, originally
sedimentary rocks trusted and metamorphosed during the Caledonian orogeny. It consists in
mica schist and meta-arkose (sandstone) and is affected by several faults and fractures
(Boyd et al. 1985; Quenardel, et al. 2008). The regional permafrost limit has been
documented to descend from about 990 masl in the western part of northern Norway to …
Skibotn valley, northern Norway. The area is part of the Reisa nappe complex, originally
sedimentary rocks trusted and metamorphosed during the Caledonian orogeny. It consists in
mica schist and meta-arkose (sandstone) and is affected by several faults and fractures
(Boyd et al. 1985; Quenardel, et al. 2008). The regional permafrost limit has been
documented to descend from about 990 masl in the western part of northern Norway to …
Ádjet is a 8-km long mountain ridge situated in the northeast side of the glacial formed Skibotn valley, northern Norway. The area is part of the Reisa nappe complex, originally sedimentary rocks trusted and metamorphosed during the Caledonian orogeny. It consists in mica schist and meta-arkose (sandstone) and is affected by several faults and fractures (Boyd et al. 1985; Quenardel, et al. 2008). The regional permafrost limit has been documented to descend from about 990 masl in the western part of northern Norway to about 550 masl in the eastern part (Christiansen et al., 2010). With a ridge up to 1360 masl, the upper part of Ádjet is expected to be located in the regional permafrost zone.
The highly fractured material in the source area is transported downslope by various rock slope processes (rockslide, rockfall, rock glacier, debris flow, solifluction), which were not intensively studied until now. Preliminary fieldwork highlights the presence of several lobe-shaped creeping landforms, believed to be rock glaciers, ie creeping ice-rich frozen material in cold-climate high-relief regions (Humlum, 2000; Haeberli et al., 2006).
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