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Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica
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| Zeitschriftentitel: | Annals of Glaciology |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Annals of Glaciology, 59, 2018, 76pt1, S. 10-15 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
|
| Schlagwörter: |
| author_facet |
Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. |
|---|---|
| author |
Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. |
| spellingShingle |
Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. Annals of Glaciology Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica Earth-Surface Processes |
| author_sort |
schroeder, dustin m. |
| spelling |
Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. 0260-3055 1727-5644 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/aog.2017.45 <jats:title>ABSTRACT</jats:title><jats:p>The catchments of Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are two of the largest, most rapidly changing, and potentially unstable sectors of the West Antarctic Ice Sheet. They are also neighboring outlets, separated by the topographically unconfined eastern shear margin of Thwaites Glacier and the southwest tributary of Pine Island Glacier. This tributary begins just downstream of the eastern shear margin and flows into the Pine Island ice shelf. As a result, it is a potential locus of interaction between the two glaciers and could result in cross-catchment feedback during the retreat of either. Here, we analyze relative basal reflectivity profiles from three radar sounding survey lines collected using the UTIG HiCARS radar system in 2004 and CReSIS MCoRDS radar system in 2012 and 2014 to investigate the extent and character of ocean access beneath the southwest tributary. These profiles provide evidence of ocean access ~12 km inland of the 1992–2011 InSAR-derived grounding line by 2014, suggesting either retreat since 2011 or the intrusion of ocean water kilometers inland of the grounding line.</jats:p> Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica Annals of Glaciology |
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Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_unstemmed |
Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_full |
Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_fullStr |
Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_full_unstemmed |
Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_short |
Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_sort |
ocean access beneath the southwest tributary of pine island glacier, west antarctica |
| topic |
Earth-Surface Processes |
| url |
http://dx.doi.org/10.1017/aog.2017.45 |
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2018 |
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10-15 |
| description |
<jats:title>ABSTRACT</jats:title><jats:p>The catchments of Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are two of the largest, most rapidly changing, and potentially unstable sectors of the West Antarctic Ice Sheet. They are also neighboring outlets, separated by the topographically unconfined eastern shear margin of Thwaites Glacier and the southwest tributary of Pine Island Glacier. This tributary begins just downstream of the eastern shear margin and flows into the Pine Island ice shelf. As a result, it is a potential locus of interaction between the two glaciers and could result in cross-catchment feedback during the retreat of either. Here, we analyze relative basal reflectivity profiles from three radar sounding survey lines collected using the UTIG HiCARS radar system in 2004 and CReSIS MCoRDS radar system in 2012 and 2014 to investigate the extent and character of ocean access beneath the southwest tributary. These profiles provide evidence of ocean access ~12 km inland of the 1992–2011 InSAR-derived grounding line by 2014, suggesting either retreat since 2011 or the intrusion of ocean water kilometers inland of the grounding line.</jats:p> |
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| author | Schroeder, Dustin M., Hilger, Andrew M., Paden, John D., Young, Duncan A., Corr, Hugh F. J. |
| author_facet | Schroeder, Dustin M., Hilger, Andrew M., Paden, John D., Young, Duncan A., Corr, Hugh F. J., Schroeder, Dustin M., Hilger, Andrew M., Paden, John D., Young, Duncan A., Corr, Hugh F. J. |
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| description | <jats:title>ABSTRACT</jats:title><jats:p>The catchments of Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are two of the largest, most rapidly changing, and potentially unstable sectors of the West Antarctic Ice Sheet. They are also neighboring outlets, separated by the topographically unconfined eastern shear margin of Thwaites Glacier and the southwest tributary of Pine Island Glacier. This tributary begins just downstream of the eastern shear margin and flows into the Pine Island ice shelf. As a result, it is a potential locus of interaction between the two glaciers and could result in cross-catchment feedback during the retreat of either. Here, we analyze relative basal reflectivity profiles from three radar sounding survey lines collected using the UTIG HiCARS radar system in 2004 and CReSIS MCoRDS radar system in 2012 and 2014 to investigate the extent and character of ocean access beneath the southwest tributary. These profiles provide evidence of ocean access ~12 km inland of the 1992–2011 InSAR-derived grounding line by 2014, suggesting either retreat since 2011 or the intrusion of ocean water kilometers inland of the grounding line.</jats:p> |
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| spelling | Schroeder, Dustin M. Hilger, Andrew M. Paden, John D. Young, Duncan A. Corr, Hugh F. J. 0260-3055 1727-5644 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/aog.2017.45 <jats:title>ABSTRACT</jats:title><jats:p>The catchments of Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are two of the largest, most rapidly changing, and potentially unstable sectors of the West Antarctic Ice Sheet. They are also neighboring outlets, separated by the topographically unconfined eastern shear margin of Thwaites Glacier and the southwest tributary of Pine Island Glacier. This tributary begins just downstream of the eastern shear margin and flows into the Pine Island ice shelf. As a result, it is a potential locus of interaction between the two glaciers and could result in cross-catchment feedback during the retreat of either. Here, we analyze relative basal reflectivity profiles from three radar sounding survey lines collected using the UTIG HiCARS radar system in 2004 and CReSIS MCoRDS radar system in 2012 and 2014 to investigate the extent and character of ocean access beneath the southwest tributary. These profiles provide evidence of ocean access ~12 km inland of the 1992–2011 InSAR-derived grounding line by 2014, suggesting either retreat since 2011 or the intrusion of ocean water kilometers inland of the grounding line.</jats:p> Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica Annals of Glaciology |
| spellingShingle | Schroeder, Dustin M., Hilger, Andrew M., Paden, John D., Young, Duncan A., Corr, Hugh F. J., Annals of Glaciology, Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica, Earth-Surface Processes |
| title | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_full | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_fullStr | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_full_unstemmed | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_short | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| title_sort | ocean access beneath the southwest tributary of pine island glacier, west antarctica |
| title_unstemmed | Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica |
| topic | Earth-Surface Processes |
| url | http://dx.doi.org/10.1017/aog.2017.45 |