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Geomorphic activity of rivers during snow melt and break‐up, Richardson Mountains, Yukon and Northwest Territories, Canada
Author(s) -
Priesnitz K.
Publication year - 1990
Publication title -
permafrost and periglacial processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.867
H-Index - 76
eISSN - 1099-1530
pISSN - 1045-6740
DOI - 10.1002/ppp.3430010309
Subject(s) - permafrost , geology , frost weathering , hydrology (agriculture) , snow , surface runoff , geomorphology , sediment , sediment transport , snowmelt , physical geography , soil water , geography , oceanography , geotechnical engineering , soil science , ecology , biology
The passage of the snow‐melt flood is divided into three phases: (i) The maximum runoff, with insignificant sediment transport taking place in a largely ice‐lined river bed and frozen sediment. (ii) The declining snow‐melt flood, with maximum sediment transport, thermoerosion being a main controlling process. (iii) The transition to low summer runoff, with secondary floods of great geomorphic effect.In an attempt to classify arctic and subarctic rivers, with respect to the morphodynamic potential of the snow‐melt break‐up period, six river regimes are distinguished.