Aufeis (German for "ice on top") is new ice that continues to form on top of older ice. To meet Wikipedias quality standards, this article or section may require cleanup. ...

Description

Aufeis accumulates during winter along stream and river valleys in arctic and subarctic environments. Aufeis forms by upwelling of river water behind ice dams, or by ground-water discharge. The latter mechanism prevails in high-gradient alpine streams as they freeze solid. For other senses of this word, see winter (disambiguation). ... A running stream. ... The River Thames in London River running into Harrietville Trout Farm A river is a large natural waterway. ... Fljótsdalur in East Iceland, a rather flat valley Mt. ... The red line indicates the 10°C isotherm in July, commonly used to define the Arctic region border Satellite image of the Arctic surface The Arctic is the area around the Earths North Pole, opposite the Antarctican area around the South Pole. ... The subarctic is a region in the Northern Hemisphere immediately south of the true Arctic and covering much of Canada and Siberia, the north of Scandinavia, northern Mongolia and the extreme north of Heilongjiang. ... DAMS is a racing team from France, involved in many areas of motorsports. ... Alpine may refer to: Alpine, a breed of goat. ...

Ground-water discharge is blocked by ice, perturbing the steady-state condition, and causing a small incremental rise in the local water table until discharge occurs along the bank at the top of the previously formed ice. The water table is the upper limit of abundant groundwater. ...

During winter, successive freezing of the onlapping ice layers can lead to aufeis accumulations several meters thick.

References

• Wanty et al, Aufeis Accumulations in Stream Bottoms in Arctic and Subarctic Environments as an Indicator of Geologic Structure