202
Climatic Geomorphology
Figure 8.35. Thermal erosion on a river bank (Walker, 1973, in Fookes and Vaughan, 1986, Figure 8.7).
may thaw the permafrost and undercut the channel banks giving place to thermoerosion niches that may reach 3 m in height and 1 to 3 m in width (Czudek and
Demek, 1970b; Walker, 1973) (Figure 8.35). These niches eventually collapse
supplying additional bedload to the fiver. In Central Yakutia, frozen fiver banks are
Climatic Geomorphology
Figure 8.35. Thermal erosion on a river bank (Walker, 1973, in Fookes and Vaughan, 1986, Figure 8.7).
may thaw the permafrost and undercut the channel banks giving place to thermoerosion niches that may reach 3 m in height and 1 to 3 m in width (Czudek and
Demek, 1970b; Walker, 1973) (Figure 8.35). These niches eventually collapse
supplying additional bedload to the fiver. In Central Yakutia, frozen fiver banks are