[A-CC42] Permafrost in transition: causes, impacts and feedbacks

2026年5月26日(火) 09:00 〜 10:30 201B (幕張メッセ国際会議場)

座長:Liu Lin(Chinese University of Hong Kong)、古屋正人(北海道大学大学院理学研究院地球惑星科学部門)、Iwahana Go(University of Alaska Fairbanks)、Yi Yonghong(Tongji University)

Permafrost, a cornerstone of the cryosphere, is undergoing rapid and unprecedented changes, which poses great challenges on regional water supply, ecosystem health and infrastructure stability. This session delves into the multifaceted dynamics of this transition, exploring the interconnected processes that drive such changes, consequences, and critical feedbacks to climate system and our society. We invite contributions that investigate the causes of permafrost degradation, from atmospheric warming, changing snow cover to extreme events including wildfire and extreme rainfall events, and their impacts on ground thermal regime. We also seek studies on the diverse impacts of permafrost thaw, including geomorphic and hydrological changes, infrastructure damage, and transformations in Arctic and Alpine ecosystems. Interdisciplinary studies that integrate in-situ monitoring, modeling and remote sensing to advance our ability of characterizing above processes across spatial and temporal scales and feedbacks are particularly encouraged. The ultimate goal is to form a holistic view of the future fate of permafrost and its role in a warming world.

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09:00 〜 09:15

[ACC42-01] InSAR-Detected Permafrost Aggradation in a Wildfire-Affected Drained Lake in the Northwest Territories, Canada

*Zetao Cao¹, Masato Furuya^2,3 (1. Graduate School of Science, Hokkaido University, 2. Faculty of Science, Hokkaido University, 3. Arctic Research Center, Hokkaido University)

09:15 〜 09:30

[ACC42-02] アラスカ内陸部・ポーカーフラットにおける融解深、地表面変位、植生の空間分布

*阿部隆博¹、岩花剛^2,3、甘田岳⁴、蟹江俊仁⁵、斉藤和之⁶、飯島慈裕⁷ (1. 京都大学フィールド科学教育研究センター、2. アラスカ大学フェアバンクス校国際北極圏研究センター、3. 北海道大学北極域研究センター、4. 森林総合研究所、5. 北海道科学大学工学部都市環境学科、6. 海洋研究開発機構、7. 東京都立大学大学院都市環境科学研究科)

09:30 〜 09:45

[ACC42-03] Present and Future Mountain Permafrost Distribution in Japan Derived from a Land Surface Model and Observations: Impacts of Soil Physical Properties

*横畠徳太¹、岩花剛²、斉藤和之³、末吉哲雄⁴、荒川隆⁵、新田友子⁶、大沼友貴彦⁹、メルニコワイリーナ¹、渡辺泰士¹、石崎紀子¹、大久保遥斗⁷、澤悠夏⁷、長根汐南⁷、高田久美子⁸ (1. 国立環境研究所、2. アラスカ大学フェアバンクス校、3. 海洋研究開発機構、4. 国立極地研究所、5. 株式会社 CliMTech、6. 中央大学、7. 筑波大学、8. 麻布大学、9. 気象研究所)

09:45 〜 10:00

[ACC42-04] Evaluating the Capability of InSAR-Derived Surface Deformation to Characterize the Spatio-temporal variability of Active Layer Thickness Dynamics

*Qianhui Liu¹, Yonghong Yi¹ (1. Tongji University)

10:00 〜 10:15

[ACC42-05] Holocene evolution of permafrost-dominated nearshore environment and carbon source variability in Tuktoyaktuk Harbor, Canadian Beaufort Sea

*Blanda Anita Matzenbacher^1,2, Tommaso Tesi³, Petra Zahajska⁴, Bennet Juhls⁵, Michael Fritz⁵, Lisa Bröder⁶, Malin Kylander^1,2, Peter D. Heintzman^1,2, Julie Lattaud^1,2, Katharina Schwarzkopf^1,2, Inda Brinkmann^1,2, Pier Paul Overduin⁵, Dustin Whalen⁷, Matthew O'Regan^1,2 (1. Stockholm Univ., 2. Bolin Center, 3. CNR-ISP, 4. Univ. of Bern, 5. AWI, 6. ETH Zurich, 7. NRCan)

Discussion (10:15 〜 10:30)

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