Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya
We quantify the surface elevation changes along Yala Glacier in Langtang Valley, Nepal Himalaya, since 1981 using geodetic methods to understand the recent evolution and current state of small debris-free glaciers across the region. We analyse differential global positioning system measurements and...
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Cambridge University Press
2023
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Online Access: | https://doi.org/10.1017/jog.2022.118 https://doaj.org/article/fc8a55e881cf44208113e3aebbacd67d |
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ftdoajarticles:oai:doaj.org/article:fc8a55e881cf44208113e3aebbacd67d 2023-05-15T16:57:35+02:00 Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya Sojiro Sunako Koji Fujita Takeki Izumi Satoru Yamaguchi Akiko Sakai Rijan Bhakta Kayastha 2023-04-01T00:00:00Z https://doi.org/10.1017/jog.2022.118 https://doaj.org/article/fc8a55e881cf44208113e3aebbacd67d EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022001186/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.118 0022-1430 1727-5652 https://doaj.org/article/fc8a55e881cf44208113e3aebbacd67d Journal of Glaciology, Vol 69, Pp 425-432 (2023) Glacier mass balance glacier monitoring mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.118 2023-03-19T01:31:51Z We quantify the surface elevation changes along Yala Glacier in Langtang Valley, Nepal Himalaya, since 1981 using geodetic methods to understand the recent evolution and current state of small debris-free glaciers across the region. We analyse differential global positioning system measurements and aerial stereo imagery that were acquired along Yala Glacier in 2007, 2009, 2012 and 2015 to generate digital elevation models for each calculation period. Continuous surface lowering has mainly been observed across the down-glacier area during the calculation periods, although a large degree of variability exists, with this lowering trend propagating up-glacier in recent years. The area-weighted glacier mass balances range from −0.98 ± 0.27 to −0.26 ± 0.30 m w.e. a−1 for the five calculation periods (1981–2007, 2007–2009, 2009–2012, 2012–2015 and 2007–2015). These calculated mass-balance data reveal that Yala Glacier has undergone accelerated mass loss since the late 2000s, which is consistent with the results of previous in situ measurement and remote-sensing studies. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 69 274 425 432 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier mass balance glacier monitoring mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier mass balance glacier monitoring mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Sojiro Sunako Koji Fujita Takeki Izumi Satoru Yamaguchi Akiko Sakai Rijan Bhakta Kayastha Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
topic_facet |
Glacier mass balance glacier monitoring mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
We quantify the surface elevation changes along Yala Glacier in Langtang Valley, Nepal Himalaya, since 1981 using geodetic methods to understand the recent evolution and current state of small debris-free glaciers across the region. We analyse differential global positioning system measurements and aerial stereo imagery that were acquired along Yala Glacier in 2007, 2009, 2012 and 2015 to generate digital elevation models for each calculation period. Continuous surface lowering has mainly been observed across the down-glacier area during the calculation periods, although a large degree of variability exists, with this lowering trend propagating up-glacier in recent years. The area-weighted glacier mass balances range from −0.98 ± 0.27 to −0.26 ± 0.30 m w.e. a−1 for the five calculation periods (1981–2007, 2007–2009, 2009–2012, 2012–2015 and 2007–2015). These calculated mass-balance data reveal that Yala Glacier has undergone accelerated mass loss since the late 2000s, which is consistent with the results of previous in situ measurement and remote-sensing studies. |
format |
Article in Journal/Newspaper |
author |
Sojiro Sunako Koji Fujita Takeki Izumi Satoru Yamaguchi Akiko Sakai Rijan Bhakta Kayastha |
author_facet |
Sojiro Sunako Koji Fujita Takeki Izumi Satoru Yamaguchi Akiko Sakai Rijan Bhakta Kayastha |
author_sort |
Sojiro Sunako |
title |
Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
title_short |
Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
title_full |
Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
title_fullStr |
Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
title_full_unstemmed |
Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya |
title_sort |
up-glacier propagation of surface lowering of yala glacier, langtang valley, nepal himalaya |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.118 https://doaj.org/article/fc8a55e881cf44208113e3aebbacd67d |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 69, Pp 425-432 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022001186/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.118 0022-1430 1727-5652 https://doaj.org/article/fc8a55e881cf44208113e3aebbacd67d |
op_doi |
https://doi.org/10.1017/jog.2022.118 |
container_title |
Journal of Glaciology |
container_volume |
69 |
container_issue |
274 |
container_start_page |
425 |
op_container_end_page |
432 |
_version_ |
1766049143852105728 |