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Changes in ice thickness and flow velocity of Yala Glacier, Langtang Himal, Nepal, from 1982 to 2009
https://nied-repo.bosai.go.jp/records/5735
https://nied-repo.bosai.go.jp/records/5735b0e2642d-53e0-47cd-b1cd-1faecca07bb1
| Item type | researchmap(1) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||||||||||
| タイトル | ||||||||||||||||
| 言語 | en | |||||||||||||||
| タイトル | Changes in ice thickness and flow velocity of Yala Glacier, Langtang Himal, Nepal, from 1982 to 2009 | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 著者 |
Shin Sugiyama
× Shin Sugiyama
× Kotaro Fukui
× Koji Fujita
× Kenta Tone
× Satoru Yamaguchi
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||
| 内容記述 | To investigate recent glacier changes in the Himalayan region, we carried out GPS and ground-penetrating radar (GPR) measurements at Yala Glacier, a benchmark glacier in Nepal. Glacier surface elevation and ice thickness were surveyed along a 1.5 km profile from the glacier top to the terminus. Ice flow velocity was measured at five locations by surveying stakes for either 1 year or 4 day periods. Obtained surface elevation and ice velocity were compared with those measured in 1982 and 1996. The mean ice thickness along the radar profile was 36 m in 2009 and the ice has been thinning at rates of -0.69 +/- 0.25 and -0.75 +/- 0.24 m a(-1) during the periods 1982-96 and 1996-2009, respectively. The thinning rate increases down-glacier, reaching a magnitude up to -1.8 m a(-1) near the terminus from 1996 to 2009. The ice velocity has reduced by >70% from 1982 to 2009 in the lower half of the glacier. By assuming a constant driving stress over the glacier, the total ice volume in 2009 was estimated as 0.061 km(3). Our results indicate that Yala Glacier has lost similar to 40% of its ice volume over the last 27 years and that the rate of the mass loss has accelerated over the last decade. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 書誌情報 |
en : ANNALS OF GLACIOLOGY 巻 54, 号 64, p. 157-162, 発行日 2013 |
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| 出版者 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 出版者 | CAMBRIDGE UNIV PRESS | |||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||
| 収録物識別子 | 1727-5644 | |||||||||||||||
| DOI | ||||||||||||||||
| 関連識別子 | 10.3189/2013AoG64A111 | |||||||||||||||
