Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile

Mena, Gabriela; Yoshikawa, Kenji; Schorghofer, Norbert; Pasten, Cesar; Ochoa, Felipe Agustin; Yoshii, Yuzuru; Doi, Mamoru; Miyata, Takeshi; Takahashi, Hidenori; Casassa, Gino; Sone, Toshio

Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile

Mena, Gabriela; Yoshikawa, Kenji; Schorghofer, Norbert et al.

Arctic antarctic and alpine research, 2021, 53(1), 60-66

Permalink : https://hdl.handle.net/2115/80637

このアイテムのアクセス数:636件（2026-10-11 15:29 集計）

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ファイル	フォーマット	サイズ	閲覧回数	説明
https://doi.org/10.1080/15230430.2021.1878739			44

論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/80637
タイトル	Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile
著者	Mena, Gabriela ; Yoshikawa, Kenji ; Schorghofer, Norbert ; Pasten, Cesar ; Ochoa, Felipe Agustin ; Yoshii, Yuzuru ; Doi, Mamoru ; Miyata, Takeshi ; Takahashi, Hidenori ; Casassa, Gino ; Sone, Toshio
著者名 Mena, Gabriela
著者名 Yoshikawa, Kenji
著者名 Schorghofer, Norbert
著者名 Pasten, Cesar
著者名 Ochoa, Felipe Agustin
著者名 Yoshii, Yuzuru
著者名 Doi, Mamoru
著者名 Miyata, Takeshi
著者名 Takahashi, Hidenori
著者名 Casassa, Gino
e-Rad_Researcher 10222077 著者名 Sone, Toshio
言語	英語
キーワード	Permafrost
	freeze–thaw cycle
	high elevation
	Atacama
	snow
発行日	2021-01-02
出版者	Taylor & Francis
収録物名	Arctic antarctic and alpine research
巻(号)	53(1)
ページ	60-66
抄録	Permafrost occurs in the high Atacama Desert, and its thermal state was characterized at a study site 5,075 m a.s.l., at the lower regional altitude boundary for permafrost. The permafrost body is about 5 m thick and located in the hydrothermal alteration zone. The freeze-thaw layer and upper part of the permafrost layer temperatures were measured at 0 to 39 cm depth at 1-cm resolution throughout the year. The upper 3 cm of the ground experienced more than 100 freeze-thaw cycles in 2019. The maximum thaw depth was 14 cm. No significant thermal offset is observed between the annual mean of the surface temperature and the top permafrost boundary. The 14-m borehole reveals that the geothermal gradient was quite high at 200 degrees C/km. In 2019 the seventy days of snow cover impacted the surface energy budget. Winter and summer snow conditions contribute to cooling the surface temperature regime in different ways.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	1523-0430
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1080/15230430.2021.1878739