the sediment. In winter months this sediment begins to freeze which leads to expansion of sediment, confining the water and increasing the pressure. This results in the formation of a mound due to the upwards pressure. However, during summer months the ice core of the pingo begins to melt which causes the mound to cave in.

Hydraulic pingos

Hydraulic (open-system) pingos result from groundwater flowing from an outside source, i.e. sub-permafrost or intra-permafrost aquifers. Hydrostatic pressure

1.Previous
3.Next