TY - CHAP
T1 - Antarctic subglacial lakes
AU - Siegert, Martin J.
AU - Woodward, John
AU - Royston-Bishop, George
PY - 2012
Y1 - 2012
N2 - Subglacial lakes are large pockets of water that lie beneath large ice sheets. Despite mean annual ice surface temperatures of below −50°C, background levels of geothermal heating (∼50 mW m−2) ensure that, where the ice is in excess of 3 km thick, basal temperatures can reach the pressure melting point. Subglacial water flows under the influence of gravity and ice overburden pressure. It can flow “uphill” if the magnitude of the ice surface slope is greater than 1/10th of the bedrock slope. Water collects, however, where basal slopes are larger, to form subglacial lakes.
AB - Subglacial lakes are large pockets of water that lie beneath large ice sheets. Despite mean annual ice surface temperatures of below −50°C, background levels of geothermal heating (∼50 mW m−2) ensure that, where the ice is in excess of 3 km thick, basal temperatures can reach the pressure melting point. Subglacial water flows under the influence of gravity and ice overburden pressure. It can flow “uphill” if the magnitude of the ice surface slope is greater than 1/10th of the bedrock slope. Water collects, however, where basal slopes are larger, to form subglacial lakes.
UR - https://www.scopus.com/pages/publications/85044017350
U2 - 10.1007/978-1-4020-4410-6_39
DO - 10.1007/978-1-4020-4410-6_39
M3 - Chapter
AN - SCOPUS:85044017350
SN - 9781402056161
T3 - Encyclopedia of Earth Sciences Series
SP - 37
EP - 39
BT - Encyclopedia of Lakes and Reservoirs
A2 - Bengtsson, Lars
A2 - Herschy, Reginald W.
A2 - Fairbridge, Rhodes W.
PB - Springer
CY - Dordrecht
ER -