The covered mountain chain is characterized by high-alpine
meadows, rock faces and scree-covered areas. The area below
2000ma.s.l. is covered by sparse forest which becomes
dense as of ca. 1800ma.s.l. The Wannengrat area is used as
test site for various research projects at the WSL Institute
for Snow and Avalanche research SLF, mainly because of
the very good accessibility from Davos even if the avalanche
danger level is considerable. We collected hand-measured
snow depth plots, dGNSS points and TLS data sets close to
the Wannengrat peak as reference data sets (see Sect. 3.2) on
the day of the ADS80 data acquisition.
The Dischma test site is a high-alpine valley branching off
from the main valley of Davos (1500ma.s.l.) in a southeasterly
direction and rising up to 2000ma.s.l. at the end of the
valley. It covers an area of ca. 717 km (119 km2/ and contains
the complete catchment of the Dischma Creek where
several hydrological studies have been performed (Bavay et
al., 2009). The peaks surrounding this catchment reach up to
3130ma.s.l. (Piz Grialetsch). Forest covers the lower part of
the valley up to 2000ma.s.l. The southeastern two thirds of
the valley are completely forest free.We collected GPR snow
depth measurements at the valley bottom in the northwestern
part of the test site as reference data on the day of the ADS80
data acquisition. Because the central flight strip at the valley
bottom was corrupted in the summer 2010 data set, resulting
in a low-quality summer DSM, we repeated the flight in
summer 2013.
The covered mountain chain is characterized by high-alpinemeadows, rock faces and scree-covered areas. The area below2000ma.s.l. is covered by sparse forest which becomesdense as of ca. 1800ma.s.l. The Wannengrat area is used astest site for various research projects at the WSL Institutefor Snow and Avalanche research SLF, mainly because ofthe very good accessibility from Davos even if the avalanchedanger level is considerable. We collected hand-measuredsnow depth plots, dGNSS points and TLS data sets close tothe Wannengrat peak as reference data sets (see Sect. 3.2) onthe day of the ADS80 data acquisition.The Dischma test site is a high-alpine valley branching offfrom the main valley of Davos (1500ma.s.l.) in a southeasterlydirection and rising up to 2000ma.s.l. at the end of thevalley. It covers an area of ca. 717 km (119 km2/ and containsthe complete catchment of the Dischma Creek whereseveral hydrological studies have been performed (Bavay etal., 2009). The peaks surrounding this catchment reach up to3130ma.s.l. (Piz Grialetsch). Forest covers the lower part ofthe valley up to 2000ma.s.l. The southeastern two thirds ofthe valley are completely forest free.We collected GPR snowdepth measurements at the valley bottom in the northwesternpart of the test site as reference data on the day of the ADS80data acquisition. Because the central flight strip at the valleybottom was corrupted in the summer 2010 data set, resultingin a low-quality summer DSM, we repeated the flight insummer 2013.
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