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  1. 防災科研関係論文

Effect of Permafrost Thawing on Discharge of the Kolyma River, Northeastern Siberia

https://nied-repo.bosai.go.jp/records/6100
https://nied-repo.bosai.go.jp/records/6100
1ffdf1b0-b390-4a43-99f9-e0d45547cf63
Item type researchmap(1)
公開日 2023-04-27
タイトル
言語 en
タイトル Effect of Permafrost Thawing on Discharge of the Kolyma River, Northeastern Siberia
言語
言語 eng
著者 Kazuyoshi Suzuki

× Kazuyoshi Suzuki

en Kazuyoshi Suzuki

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Hotaek Park

× Hotaek Park

en Hotaek Park

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Olga Makarieva

× Olga Makarieva

en Olga Makarieva

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Hironari Kanamori

× Hironari Kanamori

en Hironari Kanamori

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Masahiro Hori

× Masahiro Hori

en Masahiro Hori

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Koji Matsuo

× Koji Matsuo

en Koji Matsuo

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Shinji Matsumura

× Shinji Matsumura

en Shinji Matsumura

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Nataliia Nesterova

× Nataliia Nesterova

en Nataliia Nesterova

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Tetsuya Hiyama

× Tetsuya Hiyama

en Tetsuya Hiyama

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抄録
内容記述タイプ Other
内容記述 With permafrost warming, the observed discharge of the Kolyma River in northeastern Siberia decreased between 1930s and 2000; however, the underlying mechanism is not well understood. To understand the hydrological changes in the Kolyma River, it is important to analyze the long-term hydrometeorological features, along with the changes in the active layer thickness. A coupled hydrological and biogeochemical model was used to analyze the hydrological changes due to permafrost warming during 1979-2012, and the simulated results were validated with satellite-based products and in situ observational records. The increase in the active layer thickness by permafrost warming suppressed the summer discharge contrary to the increased summer precipitation. This suggests that the increased terrestrial water storage anomaly (TWSA) contributed to increased evapotranspiration, which likely reduced soil water stress to plants. As soil freeze-thaw processes in permafrost areas serve as factors of climate memory, we identified a two-year lag between precipitation and evapotranspiration via TWSA. The present results will expand our understanding of future Arctic changes and can be applied to Arctic adaptation measures.
言語 en
書誌情報 en : REMOTE SENSING

巻 13, 号 21, 発行日 2021-11
出版者
言語 en
出版者 MDPI
ISSN
収録物識別子タイプ EISSN
収録物識別子 2072-4292
DOI
関連識別子 10.3390/rs13214389
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