Measuring Glacier Elevation Change by Tracking Shadows on Satellite Monoscopic Optical Images
Por:
Dematteis N., Giordan D., Crippa B., Monserrat O.
Publicada:
1 ene 2023
Resumen:
Measuring glacier elevation change is crucial information for estimating glacier mass balance, calibrating mass balance and climate models, and assessing the impact of global warming. We examined the potentiality of clinometry to quantify glacier elevation changes. This technique allows calculating the elevation of the points that lie on the margins of the shadows cast by the local topography on monoscopic optical images. Mapping the shadow position across different images permits quantifying surface elevation changes. We applied clinometry to Sentinel-2 images of the Aletsch Glacier (Switzerland) and we measured a glacier thinning of -1.9 +/- 1.7 ma(-1) between 2017 and 2021, in agreement with previous observations.
Filiaciones:
Dematteis N.:
Research Institute for Geo-Hydrological Protection, Italian National Research Council, Turin, 10135, Italy
Italian Natl Res Council, Res Inst Geohydrol Protect, I-10135 Turin, Italy
Giordan D.:
Research Institute for Geo-Hydrological Protection, Italian National Research Council, Turin, 10135, Italy
Italian Natl Res Council, Res Inst Geohydrol Protect, I-10135 Turin, Italy
Crippa B.:
University of Milan, Department of Earth Sciences, Milan, 20122, Italy
Univ Milan, Dept Earth Sci, I-20122 Milan, Italy
Monserrat O.:
Centre Tecnològic de Telecomunicacions de Catalunya, Geomatic Division, Castelldefels, 08860, Spain
Ctr Tecnol Telecomunicac Catalunya, Geomat Div, Castelldefels 08860, Spain
hybrid, All Open Access; Hybrid Gold Open Access
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