Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress
Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km in...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Coperincus
2009
|
Subjects: | |
Online Access: | https://nrl.northumbria.ac.uk/id/eprint/37586/ https://doi.org/10.5194/tc-3-125-2009 https://nrl.northumbria.ac.uk/id/eprint/37586/1/Scott%20et%20al%20-%20Increased%20rate%20of%20acceleration%20on%20Pine%20Island%20Glacier%20strongly%20coupled%20to%20changes%20in%20gravitational%20driving%20stress%20OA.pdf |
id |
ftunivnorthumb:oai:nrl.northumbria.ac.uk:37586 |
---|---|
record_format |
openpolar |
spelling |
ftunivnorthumb:oai:nrl.northumbria.ac.uk:37586 2023-05-15T13:56:54+02:00 Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress Scott, J. B. T. Gudmundsson, Hilmar Smith, A. M. Bingham, Robert G. Pritchard, Hamish D. Vaughan, David G. 2009-05-13 text https://nrl.northumbria.ac.uk/id/eprint/37586/ https://doi.org/10.5194/tc-3-125-2009 https://nrl.northumbria.ac.uk/id/eprint/37586/1/Scott%20et%20al%20-%20Increased%20rate%20of%20acceleration%20on%20Pine%20Island%20Glacier%20strongly%20coupled%20to%20changes%20in%20gravitational%20driving%20stress%20OA.pdf en eng Coperincus https://nrl.northumbria.ac.uk/id/eprint/37586/1/Scott%20et%20al%20-%20Increased%20rate%20of%20acceleration%20on%20Pine%20Island%20Glacier%20strongly%20coupled%20to%20changes%20in%20gravitational%20driving%20stress%20OA.pdf Scott, J. B. T., Gudmundsson, Hilmar, Smith, A. M., Bingham, Robert G., Pritchard, Hamish D. and Vaughan, David G. (2009) Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress. The Cryosphere, 3 (1). pp. 125-131. ISSN 1994-0424 cc_by CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2009 ftunivnorthumb https://doi.org/10.5194/tc-3-125-2009 2022-09-25T06:08:59Z Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4% over 2007 and thinning was 3.5 ± 0.5 ma-1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1% over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the glacier is approaching a new steady state. Article in Journal/Newspaper Antarc* Antarctica Pine Island Pine Island Glacier The Cryosphere Northumbria University, Newcastle: Northumbria Research Link (NRL) Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) The Cryosphere 3 1 125 131 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Scott, J. B. T. Gudmundsson, Hilmar Smith, A. M. Bingham, Robert G. Pritchard, Hamish D. Vaughan, David G. Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4% over 2007 and thinning was 3.5 ± 0.5 ma-1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1% over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the glacier is approaching a new steady state. |
format |
Article in Journal/Newspaper |
author |
Scott, J. B. T. Gudmundsson, Hilmar Smith, A. M. Bingham, Robert G. Pritchard, Hamish D. Vaughan, David G. |
author_facet |
Scott, J. B. T. Gudmundsson, Hilmar Smith, A. M. Bingham, Robert G. Pritchard, Hamish D. Vaughan, David G. |
author_sort |
Scott, J. B. T. |
title |
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
title_short |
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
title_full |
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
title_fullStr |
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
title_full_unstemmed |
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress |
title_sort |
increased rate of acceleration on pine island glacier strongly coupled to changes in gravitational driving stress |
publisher |
Coperincus |
publishDate |
2009 |
url |
https://nrl.northumbria.ac.uk/id/eprint/37586/ https://doi.org/10.5194/tc-3-125-2009 https://nrl.northumbria.ac.uk/id/eprint/37586/1/Scott%20et%20al%20-%20Increased%20rate%20of%20acceleration%20on%20Pine%20Island%20Glacier%20strongly%20coupled%20to%20changes%20in%20gravitational%20driving%20stress%20OA.pdf |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Pine Island Glacier |
geographic_facet |
Pine Island Glacier |
genre |
Antarc* Antarctica Pine Island Pine Island Glacier The Cryosphere |
genre_facet |
Antarc* Antarctica Pine Island Pine Island Glacier The Cryosphere |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/37586/1/Scott%20et%20al%20-%20Increased%20rate%20of%20acceleration%20on%20Pine%20Island%20Glacier%20strongly%20coupled%20to%20changes%20in%20gravitational%20driving%20stress%20OA.pdf Scott, J. B. T., Gudmundsson, Hilmar, Smith, A. M., Bingham, Robert G., Pritchard, Hamish D. and Vaughan, David G. (2009) Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress. The Cryosphere, 3 (1). pp. 125-131. ISSN 1994-0424 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-3-125-2009 |
container_title |
The Cryosphere |
container_volume |
3 |
container_issue |
1 |
container_start_page |
125 |
op_container_end_page |
131 |
_version_ |
1766264502063464448 |