Subnival Processes and Subnival Sedimentation Mechanisms, the Pamir-Alay Mts., Tajikistan

Paweł Kroh, Piotr Dolnicki and Adam Łajczak
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Paweł Kroh: Institute of Geography, Pedagogical University of Krakow, ul. Podchorazych 2, 30-084 Kraków, Poland
Piotr Dolnicki: Institute of Geography, Pedagogical University of Krakow, ul. Podchorazych 2, 30-084 Kraków, Poland
Adam Łajczak: Institute of Geography, Pedagogical University of Krakow, ul. Podchorazych 2, 30-084 Kraków, Poland

Land, 2021, vol. 10, issue 2, 1-10

Abstract: Geomorphological research in the Fann Mountains of the Pamir-Alay has indicated that subnival processes are occurring. Contemporary subnival sediments indicate that complex relationships occur between the snow patches, subnival waters, and ground. Underneath a semi-permanent snow patch, snow melts slowly from the direction of the ground, resulting in a hollow that is filled with sediments produced by wash-down from the river terraces. The energy of subnival waters washes away and displaces sediments present underneath the snow patch, but also causes them to be redeposited. The sediment features imply a significant impact of the relief under the snow patch on the thickness of nival deposits and the nivation mechanism. The sediments also indicate that subnival waters may be under hydrostatic pressure, which has a considerable impact on both the snowmelt and sedimentation processes.

Keywords: subnival processes; semi-permanent snow patch; periglacial geomorphology; Pamiro-Alay Mts (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
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