Aufeis

In 1859 the Baltic German scientist and explorer Alexander von Middendorff used this term to describe his observations of the phenomenon in northern Siberia.

Such restrictions or “choke-points” result in bulk overflow and local increases in hydrostatic pressure, causing water to move upward through fissures onto the original ice layer.

[11] Sheets of aufeis may block stream channels and cause their flood plains to widen as spring floodwaters are forced to flow around the ice.

[5] In late 2011, Mongolia planned to test the use and storage of artificial naleds as a way of cooling Ulan Bator in the hot Mongolian summer, and reducing the use of energy-intensive air conditioning.

[24][25] Analysis of satellite imagery from 2000 to 2015 has shown that the extent and duration of many Alaskan river icings has decreased due to climate change.

Laminations of ice in a sheet of aufeis
A sheet of aufeis in a glacial valley in Mongolia
Backpackers cross a sheet of aufeis in the Anaktuvuk River Valley of Alaska