Subglacial stream

Subglacial streams are streams which flow in a channel at the bottom of an ice-sheet or a glacier, and are usually close to the glacier terminus or snout. These are fed by streams on top of the glacier which descend through ducts in the ice. The pressures are very high in these streams due to the huge mass of ice above them, consequently, they have very high erosive power meaning they will increase the volume of water flowing through, maintaining the high pressure. Some subglacial streams have the strange property of 'flowing' uphill due to the colossal pressures that are present.^[1]

References

↑ Moore, Peter D.; Garratt, Richard (2007). Tundra. Infobase Publishing. pp. 50–51. ISBN 978-0-8160-5933-1. |access-date= requires |url= (help)

Glaciers

Types

Anatomy

Processes

Measurements

Volcanic relations

Landforms

Erosional	Arête Cirque Cirque stairway Crag and tail Fjord Glacial horn Glacial lake Glacial striae Hanging valley Ribbon lake Roche moutonnée Tarn Tunnel valley U-valley Zungenbecken

Depositional	Drumlin Erratic block Moraine Moraine-dammed lake Pulju moraine Rogen moraine Sevetti moraine Terminal moraine Till plain Veiki moraine

Glacifluvial	Alpentor Diluvium Esker Giant current ripples Kame Kame delta Kettle hole Outwash fan Sandur Urstromtal

Glaciology
Category
List
Template:Periglacial environment

This article is issued from Wikipedia - version of the Friday, May 04, 2012. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.