Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream

Boreholes drilled to the bottom of ice stream B in the West Antarctic Ice Sheet reveal that the base of the ice stream is at the melting point and the basal water pressure is within about 1.6 bars of the ice overburden pressure. These conditions allow the rapid ice streaming motion to occur by basal...

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Bibliographic Details
Published in:Science
Main Authors: Engelhardt, Hermann, Humphrey, Neil, Kamb, Barclay, Fahnestock, Mark
Format: Article in Journal/Newspaper
Language:unknown
Published: American Association for the Advancement of Science 1990
Subjects:
Antarctic
West Antarctic Ice Sheet
Antarc*
Ice Sheet
Ice Stream B
Online Access:https://authors.library.caltech.edu/46197/
https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658
id ftcaltechauth:oai:authors.library.caltech.edu:46197
record_format openpolar
spelling ftcaltechauth:oai:authors.library.caltech.edu:46197 2023-05-15T14:04:55+02:00 Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream Engelhardt, Hermann Humphrey, Neil Kamb, Barclay Fahnestock, Mark 1990-04-06 https://authors.library.caltech.edu/46197/ https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658 unknown American Association for the Advancement of Science Engelhardt, Hermann and Humphrey, Neil and Kamb, Barclay and Fahnestock, Mark (1990) Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream. Science, 248 (4951). pp. 57-59. ISSN 0036-8075. doi:10.1126/science.248.4951.57. https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658 <https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658> Article PeerReviewed 1990 ftcaltechauth https://doi.org/10.1126/science.248.4951.57 2021-11-11T18:58:07Z Boreholes drilled to the bottom of ice stream B in the West Antarctic Ice Sheet reveal that the base of the ice stream is at the melting point and the basal water pressure is within about 1.6 bars of the ice overburden pressure. These conditions allow the rapid ice streaming motion to occur by basal sliding or by shear deformation of unconsolidated sediments that underlie the ice in a layer at least 2 meters thick. The mechanics of ice streaming plays a role in the response of the ice sheet to climatic change. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Stream B Caltech Authors (California Institute of Technology) Antarctic West Antarctic Ice Sheet Science 248 4951 57 59
institution Open Polar
collection Caltech Authors (California Institute of Technology)
op_collection_id ftcaltechauth
language unknown
description Boreholes drilled to the bottom of ice stream B in the West Antarctic Ice Sheet reveal that the base of the ice stream is at the melting point and the basal water pressure is within about 1.6 bars of the ice overburden pressure. These conditions allow the rapid ice streaming motion to occur by basal sliding or by shear deformation of unconsolidated sediments that underlie the ice in a layer at least 2 meters thick. The mechanics of ice streaming plays a role in the response of the ice sheet to climatic change.
format Article in Journal/Newspaper
author Engelhardt, Hermann
Humphrey, Neil
Kamb, Barclay
Fahnestock, Mark
spellingShingle Engelhardt, Hermann
Humphrey, Neil
Kamb, Barclay
Fahnestock, Mark
Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
author_facet Engelhardt, Hermann
Humphrey, Neil
Kamb, Barclay
Fahnestock, Mark
author_sort Engelhardt, Hermann
title Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
title_short Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
title_full Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
title_fullStr Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
title_full_unstemmed Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream
title_sort physical conditions at the base of a fast moving antarctic ice stream
publisher American Association for the Advancement of Science
publishDate 1990
url https://authors.library.caltech.edu/46197/
https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658
geographic Antarctic
West Antarctic Ice Sheet
geographic_facet Antarctic
West Antarctic Ice Sheet
genre Antarc*
Antarctic
Ice Sheet
Ice Stream B
genre_facet Antarc*
Antarctic
Ice Sheet
Ice Stream B
op_relation Engelhardt, Hermann and Humphrey, Neil and Kamb, Barclay and Fahnestock, Mark (1990) Physical Conditions at the Base of a Fast Moving Antarctic Ice Stream. Science, 248 (4951). pp. 57-59. ISSN 0036-8075. doi:10.1126/science.248.4951.57. https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658 <https://resolver.caltech.edu/CaltechAUTHORS:20140611-095003658>
op_doi https://doi.org/10.1126/science.248.4951.57
container_title Science
container_volume 248
container_issue 4951
container_start_page 57
op_container_end_page 59
_version_ 1766276375727046656

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