Minor imbalance of the lowermost Italian glacier from 2006 to 2019
| Autor: | Livia Piermattei, Sara Cucchiaro, Luca Carturan, Federico Cazorzi, Giancarlo Dalla Fontana, Jessica De Marco, Daniele Moro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
010504 meteorology & atmospheric sciences Geography Planning and Development Climate change Geodetic method Aquatic Science 010502 geochemistry & geophysics Water equivalent Atmospheric sciences 01 natural sciences Biochemistry Terrestrial Laser Scanning (TLS) Structure from Motion (SfM) Glacier mass balance lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Precipitation Debris-covered glaciers 0105 earth and related environmental sciences Water Science and Technology geography lcsh:TD201-500 geography.geographical_feature_category Glacier Debris Very small glaciers Air temperature Environmental science Glacier dynamics Surface dynamics |
| Zdroj: | Water, Vol 12, Iss 2503, p 2503 (2020) Water Volume 12 Issue 9 |
| Popis: | The response of very small glaciers to climate changes is highly scattered and little known in comparison with larger ice bodies. In particular, small avalanche-fed and debris-covered glaciers lack mass balance series of sufficient length. In this paper we present 13 years of high-resolution observations over the Occidentale del Montasio Glacier, collected using Airborne Laser Scanning, Terrestrial Laser Scanning, and Structure from Motion Multi-View Stereo techniques for monitoring its geodetic mass balance and surface dynamics. The results have been analyzed jointly with meteorological variables, and compared to a sample of &ldquo reference&rdquo glaciers for the European Alps. From 2006 to 2019 the mass balance showed high interannual variability and an average rate much closer to zero than the average of the Alpine reference glaciers (&minus 0.09 vs. &minus 1.42 m water equivalent per year, respectively). This behavior can be explained by the high correlation between annual balance and solid precipitation, which displayed recent peaks. The air temperature is not significantly correlated with the mass balance, which is main controlled by avalanche activity, shadowing and debris cover. However, its rapid increase is progressively reducing the fraction of solid precipitation, and increasing the length of the ablation season. |
| Databáze: | OpenAIRE |
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