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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Paweł Kroh & Piotr Dolnicki & Adam Łajczak, 2021. "Subnival Processes and Subnival Sedimentation Mechanisms, the Pamir-Alay Mts., Tajikistan," Land, MDPI, vol. 10(2), pages 1-10, January.
    • Handle: RePEc:gam:jlands:v:10:y:2021:i:2:p:104-:d:485418
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    References listed on IDEAS

    as
    1. Martin S. Brook & Jacob Williams, 2013. "A Relict Pronival (Protalus) Rampart in the Tararua Range, North Island, New Zealand," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 24(1), pages 67-74, January.
    2. Michel Paquette & Daniel Fortier & Melissa Lafrenière & Warwick F. Vincent, 2020. "Periglacial slopewash dominated by solute transfers and subsurface erosion on a High Arctic slope," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 31(4), pages 472-486, October.
    3. A. Pissart & B. Francou, 1992. "Vertical movements of boulders in a subnival boulder pavement at 2800 m a.s.l. in the Alps (France)," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(3), pages 203-208, July.
    4. Hanne Hvidtfeldt Christiansen, 1996. "Effects of nivation on periglacial landscape evolution in western Jutland, Denmark," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 7(2), pages 111-138, April.
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