www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly
Abstract. 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...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.426.3354 2023-05-15T13:51:18+02:00 www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly J. B. T. Scott G. H. Gudmundsson A. M. Smith R. G. Bingham H. D. Pritchard D. G. Vaughan The Pennsylvania State University CiteSeerX Archives 2009 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.426.3354 http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.426.3354 http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.pdf text 2009 ftciteseerx 2016-01-08T04:19:59Z Abstract. 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. 1 Text Antarc* Antarctica Pine Island Pine Island Glacier Unknown Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract. 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. 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J. B. T. Scott G. H. Gudmundsson A. M. Smith R. G. Bingham H. D. Pritchard D. G. Vaughan |
spellingShingle |
J. B. T. Scott G. H. Gudmundsson A. M. Smith R. G. Bingham H. D. Pritchard D. G. Vaughan www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
author_facet |
J. B. T. Scott G. H. Gudmundsson A. M. Smith R. G. Bingham H. D. Pritchard D. G. Vaughan |
author_sort |
J. B. T. Scott |
title |
www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
title_short |
www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
title_full |
www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
title_fullStr |
www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
title_full_unstemmed |
www.the-cryosphere.net/3/125/2009/ © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. The Cryosphere Increased rate of acceleration on Pine Island Glacier strongly |
title_sort |
www.the-cryosphere.net/3/125/2009/ © author(s) 2009. this work is distributed under the creative commons attribution 3.0 license. the cryosphere increased rate of acceleration on pine island glacier strongly |
publishDate |
2009 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.426.3354 http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.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 |
genre_facet |
Antarc* Antarctica Pine Island Pine Island Glacier |
op_source |
http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.426.3354 http://aura.abdn.ac.uk/bitstream/2164/2402/1/2009_Scott_TC_PIG_GPS.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766255104558628864 |