Flow Mechanism of Glaciers on Soft Beds
Subhourly measurements of bed deformation, bed shear strength, subglacial water pressure, and surface speed at Storglaciären, a glacier in northern Sweden, showed that the shear-strain rates of the bed decrease during periods of high water pressure and surface speed. High water pressures appear to b...
Published in: | Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
1995
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.267.5194.80 https://www.science.org/doi/pdf/10.1126/science.267.5194.80 |
id |
craaas:10.1126/science.267.5194.80 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/science.267.5194.80 2024-09-15T18:26:03+00:00 Flow Mechanism of Glaciers on Soft Beds Iverson, Neal R. Hanson, Brian Hooke, Roger LeB. Jansson, Peter 1995 http://dx.doi.org/10.1126/science.267.5194.80 https://www.science.org/doi/pdf/10.1126/science.267.5194.80 en eng American Association for the Advancement of Science (AAAS) Science volume 267, issue 5194, page 80-81 ISSN 0036-8075 1095-9203 journal-article 1995 craaas https://doi.org/10.1126/science.267.5194.80 2024-08-29T04:01:00Z Subhourly measurements of bed deformation, bed shear strength, subglacial water pressure, and surface speed at Storglaciären, a glacier in northern Sweden, showed that the shear-strain rates of the bed decrease during periods of high water pressure and surface speed. High water pressures appear to be accompanied by a reduction in the coupling of ice with the bed that is sufficient to reduce or eliminate shearing. The instability of large ice masses may result from similar decoupling rather than from pervasive bed deformation, as has been commonly thought. Article in Journal/Newspaper Northern Sweden AAAS Resource Center (American Association for the Advancement of Science) Science 267 5194 80 81 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Subhourly measurements of bed deformation, bed shear strength, subglacial water pressure, and surface speed at Storglaciären, a glacier in northern Sweden, showed that the shear-strain rates of the bed decrease during periods of high water pressure and surface speed. High water pressures appear to be accompanied by a reduction in the coupling of ice with the bed that is sufficient to reduce or eliminate shearing. The instability of large ice masses may result from similar decoupling rather than from pervasive bed deformation, as has been commonly thought. |
format |
Article in Journal/Newspaper |
author |
Iverson, Neal R. Hanson, Brian Hooke, Roger LeB. Jansson, Peter |
spellingShingle |
Iverson, Neal R. Hanson, Brian Hooke, Roger LeB. Jansson, Peter Flow Mechanism of Glaciers on Soft Beds |
author_facet |
Iverson, Neal R. Hanson, Brian Hooke, Roger LeB. Jansson, Peter |
author_sort |
Iverson, Neal R. |
title |
Flow Mechanism of Glaciers on Soft Beds |
title_short |
Flow Mechanism of Glaciers on Soft Beds |
title_full |
Flow Mechanism of Glaciers on Soft Beds |
title_fullStr |
Flow Mechanism of Glaciers on Soft Beds |
title_full_unstemmed |
Flow Mechanism of Glaciers on Soft Beds |
title_sort |
flow mechanism of glaciers on soft beds |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1995 |
url |
http://dx.doi.org/10.1126/science.267.5194.80 https://www.science.org/doi/pdf/10.1126/science.267.5194.80 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Science volume 267, issue 5194, page 80-81 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.267.5194.80 |
container_title |
Science |
container_volume |
267 |
container_issue |
5194 |
container_start_page |
80 |
op_container_end_page |
81 |
_version_ |
1810466514081415168 |