Data di Pubblicazione:
2021
Citazione:
Evolution of recently deglaciated high mountain landforms in the Eastern Anatolia / R.S. Azzoni, I.M. Bollati, M. Pelfini, M. Akif Sarıkaya, A. Zerboni. ((Intervento presentato al convegno EGU General Assembly tenutosi a online nel 2021.
Abstract:
High mountain environments and especially proglacial systems, which are areas defined by
subtracting modern glacier outlines from Little Ice Age (LIA) limits, are among the most dynamic
geomorphic contexts on Earth. They are extremely sensitive to ongoing climate change and its
consequences are especially intense – yet relatively poorly investigated – at middle-low latitudes,
as in the case of the circum-Mediterranean mountainous contexts. This area (excluding the Alps)
encompasses recently deglaciated ground from the borders of the Mediterranean Sea and
comprises more than hundred ice bodies dramatically receding since their LIA extension. Most of
these glaciers are completely disappeared leaving extensive proglacial areas, which differs from
those described in the Alps for the timing and types of ongoing processes. Here, we present and
discuss the unique characteristics of such dynamic proglacial contexts, focusing on recently
deglaciated high mountain areas of Southeast Turkey that are affected by fast geomorphological
evolution tuned by their specific climatic and geological settings. We compare two areas differing
for climatic, structural, and lithological settings: i) the Mount Ararat/Ağrı Dağı (5137 m a.s.l.), a
stratovolcano, and ii) the Cilo mountain range (up to 4116 m a.s.l.), characterized by a limestone
bedrock. Since the LIA, the two areas underwent different trajectories of evolution and different
rates of geomorphic processes. High-resolution satellite data from Pleiades and SPOT 6 platforms
permit to investigate the overprint of specific local factors (volcanism, tectonic, and topography)
on climate-driven surface evolution explains the specific evolution of each proglacial area.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
R.S. Azzoni, I.M. Bollati, M. Pelfini, M. Akif Sarıkaya, A. Zerboni
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