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

@article{Jeofry:2018:10.1038/s41467-018-06679-z,
author = {Jeofry, H and Ross, N and Le, Brocq A and Graham, A and Li, J and Gogineni, P and Morlighem, M and Jordan, T and Siegert, MJ},
doi = {10.1038/s41467-018-06679-z},
journal = {Nature Communications},
title = {Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations},
url = {http://dx.doi.org/10.1038/s41467-018-06679-z},
volume = {9},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Satellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial system. Here, ice-penetrating radar data show flow-parallel hard-bed landforms beneath the grounded ice, and channels incised upwards into the ice shelf beneath meandering surface channels. As the ice transitions to flotation, the ice shelf incorporates a corrugation resulting from the landforms. Radar reveals the presence of subglacial water alongside the landforms, indicating a well-organised drainage system in which water exits the ice sheet as a point source, mixes with cavity water and incises upwards into a corrugation peak, accentuating the corrugation downstream. Hard-bedded landforms influence both subglacial hydrology and ice-shelf structure and, as they are known to be widespread on formerly glaciated terrain, their influence on the ice-sheet-shelf transition could be more widespread than thought previously.
AU  - Jeofry,H
AU  - Ross,N
AU  - Le,Brocq A
AU  - Graham,A
AU  - Li,J
AU  - Gogineni,P
AU  - Morlighem,M
AU  - Jordan,T
AU  - Siegert,MJ
DO  - 10.1038/s41467-018-06679-z
PY  - 2018///
SN  - 2041-1723
TI  - Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-018-06679-z
UR  - http://hdl.handle.net/10044/1/64959
VL  - 9
ER  -
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