Imperial College London
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ProfessorMartinSiegert

Faculty of Natural Sciences, The Grantham Institute for Climate Change

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 9666m.siegert Website

 
 
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Assistant

 

Ms Gosia Gayer +44 (0)20 7594 9666

 
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Location

 

Grantham Directors OfficeSherfield BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inbook{Wright:2013:10.1002/9781118670354.ch2,
author = {Wright, A and Siegert, MJ},
booktitle = {Antarctic Subglacial Aquatic Environments},
doi = {10.1002/9781118670354.ch2},
pages = {9--26},
title = {The Identification and Physiographical Setting of Antarctic Subglacial Lakes: An Update Based on Recent Discoveries},
url = {http://dx.doi.org/10.1002/9781118670354.ch2},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - CHAP
AB  - We investigate the glaciological and topographic setting of known Antarctic subglacial lakes following a previous assessment by Dowdeswell and Siegert (2002) based on the first inventory of 77 lakes. Procedures used to detect subglacial lakes are discussed, including radio echo sounding (RES) (which was first used to demonstrate the presence of subglacial lakes), surface topography, topographical changes, gravity measurements, and seismic investigations. Recent discoveries of subglacial lakes using these techniques are detailed, from which a revised new inventory of subglacial lakes is established, bringing the total number of known subglacial lakes to 387. Using this new inventory, we examine various controls on subglacial lakes, such as overlying ice thickness and position within the ice sheet and formulate frequency distributions for the entire subglacial lake population based on these (variable) controls. We show how the utility of RES in identifying subglacial lakes is spatially affected; lakes away from the ice divide are not easily detected by this technique, probably due to scattering at the ice sheet base. We show that subglacial lakes are widespread in Antarctica, and it is likely that many are connected within well-defined subglacial hydrological systems.
AU  - Wright,A
AU  - Siegert,MJ
DO  - 10.1002/9781118670354.ch2
EP  - 26
PY  - 2013///
SN  - 9780875904825
SP  - 9
TI  - The Identification and Physiographical Setting of Antarctic Subglacial Lakes: An Update Based on Recent Discoveries
T1  - Antarctic Subglacial Aquatic Environments
UR  - http://dx.doi.org/10.1002/9781118670354.ch2
ER  -
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