Geomorphology of the Hohsand basin (Western Italian Alps)

Nicola Colombo, Luca Paro, Danilo Godone and Simona Fratianni

Journal of Maps, 2016, vol. 12, issue 5, 975-978

Abstract: The 1:10,000 scale geomorphological map of the Hohsand basin (Piemonte Region, Italy) encompasses an area of 18 km2 (elevation range: 2300 ÷ 3374 m a.s.l.) where deposits and landforms linked to different processes (glacial, periglacial, gravitational, weathering and surface water) have been distinguished. This basin hosts one of the largest glacial areas of the Western Italian Alps in which it is possible to observe and study the relationships between glacial and periglacial processes. Indeed, due to climate change, Hohsand basin has highlighted an impressive glacier retreat since the end of the Little Ice Age (1600–1900s). In recently deglaciated areas, newly developed periglacial processes and landforms have been recognised and mapped in detail at 1:3,000 scale. All these maps, including a synthesis map at 1:25,000 illustrating the distribution of glacial deposits, have been produced using multitemporal photographic interpretation of aerial images and more recent digital orthoimages, and systematic field surveys performed during the summers 2012 and 2013. The cartographic results provide information about the geomorphological setting of this high-altitude alpine zone through a detailed representation of the genetically different landforms and deposits. Moreover, the in-depth geomorphological analysis of landforms related to glacial and periglacial environments allow understanding of the dynamic interaction between these two typical alpine systems in the present context of climate change.

Date: 2016
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DOI: 10.1080/17445647.2015.1105762

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