Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack
Flow of the Western Antarctic Ice Sheet is distinctly heterogeneous in a vast region bordering the Ross Sea. Broad streaks of ice, ~1 km thick, called "ice streams", having horizontal width of several 10s of km, slide over their bed (of soil-like matter, which was seafloor in the last inte...
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ftharvardudash:oai:dash.harvard.edu:1/41426693 2023-05-15T14:02:08+02:00 Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack Rice, James Perol, Thibaut Platt, John Suckale, Jenny Meyer, Colin 2017-06 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:41426693 en_US eng https://www.icfweb.org/Procf/ICF14/Vol2/589/#zoom=z 14th International Conference on Fracture Rice, James R., Thibaut Perol, John D. Platt, Jenny Suckale, and Colin R. Meyer. 2017. Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack. In 14th International Conference on Fracture (ICF 14), Rhodes, Greece, June 18-23, 2017. http://nrs.harvard.edu/urn-3:HUL.InstRepos:41426693 Conference Paper 2017 ftharvardudash 2022-04-05T18:54:04Z Flow of the Western Antarctic Ice Sheet is distinctly heterogeneous in a vast region bordering the Ross Sea. Broad streaks of ice, ~1 km thick, called "ice streams", having horizontal width of several 10s of km, slide over their bed (of soil-like matter, which was seafloor in the last inter-glacial period) at > 100 m/yr, whereas they are bordered laterally by stagnant ridges flowing at < 10 m/yr. Major issues are those of why this morphology forms and what it means for the overall rate of ice loss. Our recent studies show how shear heating of the ice, consequent formation of temperate ice zones producing melt as they deform, and subglacial hydrological processes associated with Rothlisberger drainage channels, can naturally form a non-singular Barenblatt ending of a tens of km long shear crack between ice and till at the bed. Engineering and Applied Sciences Accepted Manuscript Conference Object Antarc* Antarctic Ice Sheet Ross Sea Harvard University: DASH - Digital Access to Scholarship at Harvard Antarctic Ross Sea |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
description |
Flow of the Western Antarctic Ice Sheet is distinctly heterogeneous in a vast region bordering the Ross Sea. Broad streaks of ice, ~1 km thick, called "ice streams", having horizontal width of several 10s of km, slide over their bed (of soil-like matter, which was seafloor in the last inter-glacial period) at > 100 m/yr, whereas they are bordered laterally by stagnant ridges flowing at < 10 m/yr. Major issues are those of why this morphology forms and what it means for the overall rate of ice loss. Our recent studies show how shear heating of the ice, consequent formation of temperate ice zones producing melt as they deform, and subglacial hydrological processes associated with Rothlisberger drainage channels, can naturally form a non-singular Barenblatt ending of a tens of km long shear crack between ice and till at the bed. Engineering and Applied Sciences Accepted Manuscript |
format |
Conference Object |
author |
Rice, James Perol, Thibaut Platt, John Suckale, Jenny Meyer, Colin |
spellingShingle |
Rice, James Perol, Thibaut Platt, John Suckale, Jenny Meyer, Colin Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
author_facet |
Rice, James Perol, Thibaut Platt, John Suckale, Jenny Meyer, Colin |
author_sort |
Rice, James |
title |
Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
title_short |
Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
title_full |
Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
title_fullStr |
Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
title_full_unstemmed |
Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack |
title_sort |
ice, water, soil and a barenblatt ending of a super-long glacial shear crack |
publishDate |
2017 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:41426693 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Ice Sheet Ross Sea |
genre_facet |
Antarc* Antarctic Ice Sheet Ross Sea |
op_relation |
https://www.icfweb.org/Procf/ICF14/Vol2/589/#zoom=z 14th International Conference on Fracture Rice, James R., Thibaut Perol, John D. Platt, Jenny Suckale, and Colin R. Meyer. 2017. Ice, Water, Soil and a Barenblatt Ending of a Super-Long Glacial Shear Crack. In 14th International Conference on Fracture (ICF 14), Rhodes, Greece, June 18-23, 2017. http://nrs.harvard.edu/urn-3:HUL.InstRepos:41426693 |
_version_ |
1766272221881303040 |