A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay
Pine Island Glacier (PIG) is one of the fastest changing ice streams of the West Antarctic Ice Sheet. Its ice shelf underwent major calving events throughout recent years. The main factor for the considerable mass loss of PIG is sub-ice shelf melting caused by the advection of warm deep water into P...
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ftawi:oai:epic.awi.de:51988 2024-09-15T17:39:09+00:00 A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay Afanasyeva, Victoria Kuhn, Gerhard Hillenbrand, Claus-Dieter Klages, Johann P. Szczuciński, Witold Frederichs, Thomas Leitchenkov, German 2018 application/pdf https://epic.awi.de/id/eprint/51988/ https://epic.awi.de/id/eprint/51988/1/Afanasyeva_et_al_2018_polar2018_abstr.pdf http://www.professionalabstracts.com/POLAR2018/iPlanner https://hdl.handle.net/10013/epic.5cd2e9cc-339a-4eec-9a09-82332fe1a2f0 unknown SCAR https://epic.awi.de/id/eprint/51988/1/Afanasyeva_et_al_2018_polar2018_abstr.pdf Afanasyeva, V. , Kuhn, G. orcid:0000-0001-6069-7485 , Hillenbrand, C. D. , Klages, J. P. orcid:0000-0003-0968-1183 , Szczuciński, W. , Frederichs, T. and Leitchenkov, G. (2018) A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay , POLAR2018 SCAR/IASC Open Science Conference, Davos, 19 June 2018 - 23 June 2018 . hdl:10013/epic.5cd2e9cc-339a-4eec-9a09-82332fe1a2f0 EPIC3POLAR2018 SCAR/IASC Open Science Conference, Davos, 2018-06-19-2018-06-23Davos, SCAR Conference notRev 2018 ftawi 2024-06-24T04:24:41Z Pine Island Glacier (PIG) is one of the fastest changing ice streams of the West Antarctic Ice Sheet. Its ice shelf underwent major calving events throughout recent years. The main factor for the considerable mass loss of PIG is sub-ice shelf melting caused by the advection of warm deep water into Pine Island Bay on the shelf of the southeastern Amundsen Sea Embayment (ASE). Unique ice conditions during expedition PS104 with RV “Polarstern” to the ASE in February-March 2017 allowed to recover a 7.59 m-gravity core in an area that had been covered by the PIG ice shelf until 2015. The sediment core PS104_008-2 was taken at a water depth of 698 m near the eastern margin of the ice shelf. The new sedimentological data from the core will provide insights into sub-ice shelf environmental conditions and the Holocene history of meltwater plume deposition and oceanic ice-shelf melting. We will present results of our new multi-proxy study, including down-core lithological changes, grain size distribution and excess 210Pb data. Occasional occurrence of calcareous benthic foraminifera shells in the lower part of the core will allow the application of radiocarbon dating. Coupled with the excess 210Pb data, the AMS 14C ages will provide constraints on sub-ice shelf sediment accumulation rates and the discharge rates of subglacial meltwater plumes. Conference Object Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Pine Island Bay Pine Island Glacier Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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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) is one of the fastest changing ice streams of the West Antarctic Ice Sheet. Its ice shelf underwent major calving events throughout recent years. The main factor for the considerable mass loss of PIG is sub-ice shelf melting caused by the advection of warm deep water into Pine Island Bay on the shelf of the southeastern Amundsen Sea Embayment (ASE). Unique ice conditions during expedition PS104 with RV “Polarstern” to the ASE in February-March 2017 allowed to recover a 7.59 m-gravity core in an area that had been covered by the PIG ice shelf until 2015. The sediment core PS104_008-2 was taken at a water depth of 698 m near the eastern margin of the ice shelf. The new sedimentological data from the core will provide insights into sub-ice shelf environmental conditions and the Holocene history of meltwater plume deposition and oceanic ice-shelf melting. We will present results of our new multi-proxy study, including down-core lithological changes, grain size distribution and excess 210Pb data. Occasional occurrence of calcareous benthic foraminifera shells in the lower part of the core will allow the application of radiocarbon dating. Coupled with the excess 210Pb data, the AMS 14C ages will provide constraints on sub-ice shelf sediment accumulation rates and the discharge rates of subglacial meltwater plumes. |
format |
Conference Object |
author |
Afanasyeva, Victoria Kuhn, Gerhard Hillenbrand, Claus-Dieter Klages, Johann P. Szczuciński, Witold Frederichs, Thomas Leitchenkov, German |
spellingShingle |
Afanasyeva, Victoria Kuhn, Gerhard Hillenbrand, Claus-Dieter Klages, Johann P. Szczuciński, Witold Frederichs, Thomas Leitchenkov, German A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
author_facet |
Afanasyeva, Victoria Kuhn, Gerhard Hillenbrand, Claus-Dieter Klages, Johann P. Szczuciński, Witold Frederichs, Thomas Leitchenkov, German |
author_sort |
Afanasyeva, Victoria |
title |
A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
title_short |
A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
title_full |
A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
title_fullStr |
A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
title_full_unstemmed |
A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay |
title_sort |
new grounding-line proximal sedimentary record from inner pine island bay |
publisher |
SCAR |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/51988/ https://epic.awi.de/id/eprint/51988/1/Afanasyeva_et_al_2018_polar2018_abstr.pdf http://www.professionalabstracts.com/POLAR2018/iPlanner https://hdl.handle.net/10013/epic.5cd2e9cc-339a-4eec-9a09-82332fe1a2f0 |
genre |
Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Pine Island Bay Pine Island Glacier |
genre_facet |
Amundsen Sea Antarc* Antarctic Ice Sheet Ice Shelf Pine Island Bay Pine Island Glacier |
op_source |
EPIC3POLAR2018 SCAR/IASC Open Science Conference, Davos, 2018-06-19-2018-06-23Davos, SCAR |
op_relation |
https://epic.awi.de/id/eprint/51988/1/Afanasyeva_et_al_2018_polar2018_abstr.pdf Afanasyeva, V. , Kuhn, G. orcid:0000-0001-6069-7485 , Hillenbrand, C. D. , Klages, J. P. orcid:0000-0003-0968-1183 , Szczuciński, W. , Frederichs, T. and Leitchenkov, G. (2018) A New Grounding-line Proximal Sedimentary Record from Inner Pine Island Bay , POLAR2018 SCAR/IASC Open Science Conference, Davos, 19 June 2018 - 23 June 2018 . hdl:10013/epic.5cd2e9cc-339a-4eec-9a09-82332fe1a2f0 |
_version_ |
1810477811852378112 |