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Actively evolving subglacial conduits and eskers initiate ice shelf channels at an Antarctic grounding line

Abstract:

Ice-shelf channels are long curvilinear tracts of thin ice found on Antarctic ice shelves. Many of them originate near the grounding line, but their formation mechanisms remain poorly understood. Here we use ice-penetrating radar data from Roi Baudouin Ice Shelf, East Antarctica, to infer that the morphology of several ice-shelf channels is seeded upstream of the grounding line by large basal obstacles indenting the ice from below. We interpret each obstacle as an esker ridge formed from sedi...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/ncomms15228

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Institution:
University of Oxford
Oxford college:
Trinity College
Role:
Author
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Funding agency for:
Hewitt, I
Grant:
FP7 CIG grant (ImPISM
Publisher:
Springer Nature Publisher's website
Journal:
Nature Communications Journal website
Volume:
8
Article number:
15228
Publication date:
2017-05-09
Acceptance date:
2017-03-09
DOI:
ISSN:
2041-1723
Source identifiers:
695675
Language:
English
Keywords:
Pubs id:
pubs:695675
UUID:
uuid:62a1084f-54bf-4c63-bfb8-d56ccdc56826
Local pid:
pubs:695675
Deposit date:
2017-06-06

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