Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay
Abstract Glaciers located in western High Mountain Asia (HMA) have shown mass gain or limited mass losses compared to other mountain regions since ~2000. Increases in accumulation may be responsible. Although no contemporary measurements exist to explore this hypothesis, extensive historic measureme...
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crcambridgeupr:10.1017/jog.2020.103 2024-06-23T07:54:15+00:00 Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay Kronenberg, Marlene Machguth, Horst Eichler, Anja Schwikowski, Margit Hoelzle, Martin 2020 http://dx.doi.org/10.1017/jog.2020.103 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020001033 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 67, issue 262, page 253-268 ISSN 0022-1430 1727-5652 journal-article 2020 crcambridgeupr https://doi.org/10.1017/jog.2020.103 2024-06-05T04:03:27Z Abstract Glaciers located in western High Mountain Asia (HMA) have shown mass gain or limited mass losses compared to other mountain regions since ~2000. Increases in accumulation may be responsible. Although no contemporary measurements exist to explore this hypothesis, extensive historic measurements including firn density, stratigraphy and accumulation rates at ~4400 m a.s.l. on Abramov Glacier, Pamir Alay, provide valuable indications of accumulation changes. Abramov Glacier is located at the northern margin of western HMA. In this study, we assess unique historical firn data of Abramov Glacier from the 1970s to evaluate past firn conditions in this data sparse region. The current firn state is investigated based on a series of in situ measurements including firn cores and ground-penetrating radar measurements performed in 2018. We compare the legacy data with contemporary firn characteristics. Our results indicate a high year-to-year variability, but generally increasing net accumulation during the last 60 years on Abramov Glacier, with 0.84 ± 0.22 m w.e. for 2011–18 compared to 0.68 ± 0.32 m w.e. for 1965–72 and 0.59 ± 0.22 m w.e. for 1970–97. These results from in situ data provide ground truth for the data-sparse western HMA. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 67 262 253 268 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Glaciers located in western High Mountain Asia (HMA) have shown mass gain or limited mass losses compared to other mountain regions since ~2000. Increases in accumulation may be responsible. Although no contemporary measurements exist to explore this hypothesis, extensive historic measurements including firn density, stratigraphy and accumulation rates at ~4400 m a.s.l. on Abramov Glacier, Pamir Alay, provide valuable indications of accumulation changes. Abramov Glacier is located at the northern margin of western HMA. In this study, we assess unique historical firn data of Abramov Glacier from the 1970s to evaluate past firn conditions in this data sparse region. The current firn state is investigated based on a series of in situ measurements including firn cores and ground-penetrating radar measurements performed in 2018. We compare the legacy data with contemporary firn characteristics. Our results indicate a high year-to-year variability, but generally increasing net accumulation during the last 60 years on Abramov Glacier, with 0.84 ± 0.22 m w.e. for 2011–18 compared to 0.68 ± 0.32 m w.e. for 1965–72 and 0.59 ± 0.22 m w.e. for 1970–97. These results from in situ data provide ground truth for the data-sparse western HMA. |
format |
Article in Journal/Newspaper |
author |
Kronenberg, Marlene Machguth, Horst Eichler, Anja Schwikowski, Margit Hoelzle, Martin |
spellingShingle |
Kronenberg, Marlene Machguth, Horst Eichler, Anja Schwikowski, Margit Hoelzle, Martin Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
author_facet |
Kronenberg, Marlene Machguth, Horst Eichler, Anja Schwikowski, Margit Hoelzle, Martin |
author_sort |
Kronenberg, Marlene |
title |
Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
title_short |
Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
title_full |
Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
title_fullStr |
Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
title_full_unstemmed |
Comparison of historical and recent accumulation rates on Abramov Glacier, Pamir Alay |
title_sort |
comparison of historical and recent accumulation rates on abramov glacier, pamir alay |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/jog.2020.103 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020001033 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 67, issue 262, page 253-268 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2020.103 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
262 |
container_start_page |
253 |
op_container_end_page |
268 |
_version_ |
1802646357330100224 |