Correlation of recent calving front retreat at Pine Island Glacier to bathymetry
Pine Island Glacier (PIG) currently experiences the largest negative mass balance in comparison to other outlet glaciers in Antarctica and hence is the largest contributor to modern sea-level rise. Due to the glacier’s topographic setting, a bed that deepens beyond the grounding line to the deep int...
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ftawi:oai:epic.awi.de:47493 2023-05-15T13:45:21+02:00 Correlation of recent calving front retreat at Pine Island Glacier to bathymetry Arndt, Jan Erik Larter, Robert D. Friedl, Peter Gohl, Karsten Höppner, Kathrin 2018-06-21 https://epic.awi.de/id/eprint/47493/ https://hdl.handle.net/10013/epic.cc4b7162-30bb-4930-be39-5eb1c1d72f3c unknown Arndt, J. E. orcid:0000-0002-9413-1612 , Larter, R. D. , Friedl, P. , Gohl, K. orcid:0000-0002-9558-2116 and Höppner, K. (2018) Correlation of recent calving front retreat at Pine Island Glacier to bathymetry , Polar2018, Davos, 19 June 2018 - 23 June 2018 . hdl:10013/epic.cc4b7162-30bb-4930-be39-5eb1c1d72f3c EPIC3Polar2018, Davos, 2018-06-19-2018-06-23 Conference notRev 2018 ftawi 2021-12-24T15:43:57Z Pine Island Glacier (PIG) currently experiences the largest negative mass balance in comparison to other outlet glaciers in Antarctica and hence is the largest contributor to modern sea-level rise. Due to the glacier’s topographic setting, a bed that deepens beyond the grounding line to the deep interior basin of the West Antarctic Ice Sheet (WAIS), it has been suggested that this increased ice loss may be a precursor of WAIS collapse. Despite the increased mass loss, however, the calving front of PIG remained more or less stable since the earliest observations in the mid-20th century. Large icebergs where calved at intervals of a few years but subsequently the calving front re-advanced close to or even beyond its former position. This pattern changed in 2015 when a calving event resulted in a reoriented (45°-25° clockwise compared to previous calving lines) and most retreated calving line position ever observed. This new calving geometry was confirmed by a calving event in September 2017. In February 2017 we were able to access the formerly ice-shelf covered area during RV Polarstern expedition PS104. Bathymetric data from this area revealed a bathymetric ridge that has acted as a pinning point of PIG in the past. We use these bathymetric data in combination with satellite data from the last decades to investigate the correlation of bathymetric features to the calving dynamics of Pine Island Glacier. Conference Object Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Iceberg* Pine Island Pine Island Glacier Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) West Antarctic Ice Sheet |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Pine Island Glacier (PIG) currently experiences the largest negative mass balance in comparison to other outlet glaciers in Antarctica and hence is the largest contributor to modern sea-level rise. Due to the glacier’s topographic setting, a bed that deepens beyond the grounding line to the deep interior basin of the West Antarctic Ice Sheet (WAIS), it has been suggested that this increased ice loss may be a precursor of WAIS collapse. Despite the increased mass loss, however, the calving front of PIG remained more or less stable since the earliest observations in the mid-20th century. Large icebergs where calved at intervals of a few years but subsequently the calving front re-advanced close to or even beyond its former position. This pattern changed in 2015 when a calving event resulted in a reoriented (45°-25° clockwise compared to previous calving lines) and most retreated calving line position ever observed. This new calving geometry was confirmed by a calving event in September 2017. In February 2017 we were able to access the formerly ice-shelf covered area during RV Polarstern expedition PS104. Bathymetric data from this area revealed a bathymetric ridge that has acted as a pinning point of PIG in the past. We use these bathymetric data in combination with satellite data from the last decades to investigate the correlation of bathymetric features to the calving dynamics of Pine Island Glacier. |
format |
Conference Object |
author |
Arndt, Jan Erik Larter, Robert D. Friedl, Peter Gohl, Karsten Höppner, Kathrin |
spellingShingle |
Arndt, Jan Erik Larter, Robert D. Friedl, Peter Gohl, Karsten Höppner, Kathrin Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
author_facet |
Arndt, Jan Erik Larter, Robert D. Friedl, Peter Gohl, Karsten Höppner, Kathrin |
author_sort |
Arndt, Jan Erik |
title |
Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
title_short |
Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
title_full |
Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
title_fullStr |
Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
title_full_unstemmed |
Correlation of recent calving front retreat at Pine Island Glacier to bathymetry |
title_sort |
correlation of recent calving front retreat at pine island glacier to bathymetry |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47493/ https://hdl.handle.net/10013/epic.cc4b7162-30bb-4930-be39-5eb1c1d72f3c |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Pine Island Glacier West Antarctic Ice Sheet |
geographic_facet |
Antarctic Pine Island Glacier West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Iceberg* Pine Island Pine Island Glacier |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Iceberg* Pine Island Pine Island Glacier |
op_source |
EPIC3Polar2018, Davos, 2018-06-19-2018-06-23 |
op_relation |
Arndt, J. E. orcid:0000-0002-9413-1612 , Larter, R. D. , Friedl, P. , Gohl, K. orcid:0000-0002-9558-2116 and Höppner, K. (2018) Correlation of recent calving front retreat at Pine Island Glacier to bathymetry , Polar2018, Davos, 19 June 2018 - 23 June 2018 . hdl:10013/epic.cc4b7162-30bb-4930-be39-5eb1c1d72f3c |
_version_ |
1766221269568585728 |