High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin
The accumulation region of Fedchenko Glacier represents an extensive snow reservoir in the Pamir Mountains feeding the longest glacier in Central Asia. Observed elevation changes indicate a continuous ice loss in the ablation region of Fedchenko Glacier since 1928, while the mass balance of the accu...
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Cambridge University Press
2020
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Online Access: | https://doi.org/10.1017/jog.2019.97 https://doaj.org/article/4449e6a5412e490f9b7e9367e603c78b |
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ftdoajarticles:oai:doaj.org/article:4449e6a5412e490f9b7e9367e603c78b 2023-05-15T16:57:33+02:00 High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin Astrid Lambrecht Christoph Mayer Pascal Bohleber Vladimir Aizen 2020-04-01T00:00:00Z https://doi.org/10.1017/jog.2019.97 https://doaj.org/article/4449e6a5412e490f9b7e9367e603c78b EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143019000972/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.97 0022-1430 1727-5652 https://doaj.org/article/4449e6a5412e490f9b7e9367e603c78b Journal of Glaciology, Vol 66, Pp 219-230 (2020) accumulation applied glaciology ground-penetrating radar ice and climate mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/jog.2019.97 2023-03-12T01:30:57Z The accumulation region of Fedchenko Glacier represents an extensive snow reservoir in the Pamir Mountains feeding the longest glacier in Central Asia. Observed elevation changes indicate a continuous ice loss in the ablation region of Fedchenko Glacier since 1928, while the mass balance of the accumulation region is largely unknown. In this study, we show that accumulation varies considerably in the main accumulation basin, with accumulation rates up to 2400 mm w.e. a−1 in the West, decreasing to <1000 mm w.e. a−1 in the center, although the elevation difference is <200 m. The combination of snow/firn samples and ground-penetrating radar profiles suggests that this accumulation pattern is persistent during the recent past. The recent accumulation history is reconstructed from internal radar reflectors using a firn densification model and shows strong interannual variations, but near constant mean values since 2002. Modeling of trajectories, based on accumulation and glacier geometry, results in an estimate of the depth/age relation close to the main divide. This region provides one of the most suitable locations for retrieving climate information with temporal high resolution for the last millennium, with a potential to cover most of the Holocene in less detail. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 66 256 219 230 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
accumulation applied glaciology ground-penetrating radar ice and climate mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
accumulation applied glaciology ground-penetrating radar ice and climate mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Astrid Lambrecht Christoph Mayer Pascal Bohleber Vladimir Aizen High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
topic_facet |
accumulation applied glaciology ground-penetrating radar ice and climate mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
The accumulation region of Fedchenko Glacier represents an extensive snow reservoir in the Pamir Mountains feeding the longest glacier in Central Asia. Observed elevation changes indicate a continuous ice loss in the ablation region of Fedchenko Glacier since 1928, while the mass balance of the accumulation region is largely unknown. In this study, we show that accumulation varies considerably in the main accumulation basin, with accumulation rates up to 2400 mm w.e. a−1 in the West, decreasing to <1000 mm w.e. a−1 in the center, although the elevation difference is <200 m. The combination of snow/firn samples and ground-penetrating radar profiles suggests that this accumulation pattern is persistent during the recent past. The recent accumulation history is reconstructed from internal radar reflectors using a firn densification model and shows strong interannual variations, but near constant mean values since 2002. Modeling of trajectories, based on accumulation and glacier geometry, results in an estimate of the depth/age relation close to the main divide. This region provides one of the most suitable locations for retrieving climate information with temporal high resolution for the last millennium, with a potential to cover most of the Holocene in less detail. |
format |
Article in Journal/Newspaper |
author |
Astrid Lambrecht Christoph Mayer Pascal Bohleber Vladimir Aizen |
author_facet |
Astrid Lambrecht Christoph Mayer Pascal Bohleber Vladimir Aizen |
author_sort |
Astrid Lambrecht |
title |
High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
title_short |
High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
title_full |
High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
title_fullStr |
High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
title_full_unstemmed |
High altitude accumulation and preserved climate information in the western Pamir, observations from the Fedchenko Glacier accumulation basin |
title_sort |
high altitude accumulation and preserved climate information in the western pamir, observations from the fedchenko glacier accumulation basin |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/jog.2019.97 https://doaj.org/article/4449e6a5412e490f9b7e9367e603c78b |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 66, Pp 219-230 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143019000972/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.97 0022-1430 1727-5652 https://doaj.org/article/4449e6a5412e490f9b7e9367e603c78b |
op_doi |
https://doi.org/10.1017/jog.2019.97 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
256 |
container_start_page |
219 |
op_container_end_page |
230 |
_version_ |
1766049110956179456 |