干旱区生态环境知识资源中心(Arid): Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile

Arid

DOI	10.1080/15230430.2021.1878739
	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
通讯作者	Yoshikawa, K (corresponding author), Box 74758, Fairbanks, AK 99707 USA.
来源期刊	ARCTIC ANTARCTIC AND ALPINE RESEARCH
ISSN	1523-0430
EISSN	1938-4246
出版年	2021
卷号	53 期号:1 页码:60-66
英文摘要	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.
英文关键词	Permafrost freeze– thaw cycle high elevation Atacama snow
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000617620600001
WOS类目	Environmental Sciences ; Geography, Physical
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347730
作者单位	[Mena, Gabriela; Yoshikawa, Kenji; Pasten, Cesar; Ochoa, Felipe Agustin] Univ Chile, Dept Civil Engn, Santiago, Chile; [Yoshikawa, Kenji] Univ Alaska Fairbanks, Water & Environm Res Ctr, Fairbanks, AK USA; [Schorghofer, Norbert] Planetary Sci Inst, Honolulu, HI USA; [Yoshii, Yuzuru; Doi, Mamoru; Miyata, Takeshi; Takahashi, Hidenori] Univ Tokyo, Inst Astron, Tokyo, Japan; [Casassa, Gino] Minist Publ Works, Gen Directorate Water, Santiago, Chile; [Casassa, Gino] Univ Magallanes, Gaia Antarct Res Ctr, Punta Arenas, Chile; [Sone, Toshio] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan
推荐引用方式 GB/T 7714	Mena, Gabriela,Yoshikawa, Kenji,Schorghofer, Norbert,et al. Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile[J],2021,53(1):60-66.
APA	Mena, Gabriela.,Yoshikawa, Kenji.,Schorghofer, Norbert.,Pasten, Cesar.,Ochoa, Felipe Agustin.,...&Sone, Toshio.(2021).Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile.ARCTIC ANTARCTIC AND ALPINE RESEARCH,53(1),60-66.
MLA	Mena, Gabriela,et al."Freeze-thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile".ARCTIC ANTARCTIC AND ALPINE RESEARCH 53.1(2021):60-66.