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  1. 防災科研関係論文

Modeling Glacier Behavior under Different Precipitation Seasonalities

https://nied-repo.bosai.go.jp/records/5312
https://nied-repo.bosai.go.jp/records/5312
25a8425f-a659-4ae8-8088-6fa9dba4e788
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Modeling Glacier Behavior under Different Precipitation Seasonalities
言語
言語 eng
著者 Satoru Yamaguchi

× Satoru Yamaguchi

en Satoru Yamaguchi

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Koji Fujita

× Koji Fujita

en Koji Fujita

Search repository
抄録
内容記述タイプ Other
内容記述 To understand the dependence of glacial features on precipitation, glacier behavior was simulated under different precipitation conditions using a glacier fluctuation model that combined a mass-balance model with a glacier flow model. The results reveal a strong dependence of glacier behavior on precipitation conditions. Glacier volume changes in accordance with both precipitation seasonality and annual precipitation amount. Glacier volume also fluctuates in response to changes in precipitation seasonality even if no change in annual precipitation amount occurs, because of changes in glacier albedo and the volume that is able to accumulate. Furthermore, the accumulation area ratio (AAR) depends not only on the annual precipitation amount, but also on precipitation seasonality. These relationships should be considered when the AAR method is used to reconstruct the past equilibrium line of glaciers. Glacier reactions to temperature change become more sensitive as the amount of annual precipitation increases. Response time is different for each glacier type defined by precipitation seasonality: the winter-precipitation-seasonality type had the longest response time, and the summer-precipitation-seasonality type had the shortest. The difference in the response time of glacier types is larger under arid conditions and smaller under humid conditions. The simulation results in this study underscore the importance of including glacier response to precipitation conditions when estimating glacier reactions to climate change.
言語 en
書誌情報 en : ARCTIC ANTARCTIC AND ALPINE RESEARCH

巻 45, 号 1, p. 143-152
出版者
言語 en
出版者 INST ARCTIC ALPINE RES
ISSN
収録物識別子タイプ EISSN
収録物識別子 1938-4246
DOI
関連識別子 10.1657/1938-4246-45.1.143
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