Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile
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 o...
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2021
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Online Access: | https://doi.org/10.1080/15230430.2021.1878739 https://doaj.org/article/7821f2d259eb4f5195f5b60a12e600f9 |
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ftdoajarticles:oai:doaj.org/article:7821f2d259eb4f5195f5b60a12e600f9 2023-05-15T14:14:33+02:00 Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile Gabriela Mena Kenji Yoshikawa Norbert Schorghofer César Pastén Felipe Agustin Ochoa Yuzuru Yoshii Mamoru Doi Takeshi Miyata Hidenori Takahashi Gino Casassa Toshio Sone 2021-01-01T00:00:00Z https://doi.org/10.1080/15230430.2021.1878739 https://doaj.org/article/7821f2d259eb4f5195f5b60a12e600f9 EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2021.1878739 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2021.1878739 https://doaj.org/article/7821f2d259eb4f5195f5b60a12e600f9 Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 60-66 (2021) permafrost freeze–thaw cycle high elevation atacama snow Environmental sciences GE1-350 Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1080/15230430.2021.1878739 2022-12-31T04:10:54Z 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°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. Article in Journal/Newspaper Antarctic and Alpine Research Arctic permafrost Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 53 1 60 66 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost freeze–thaw cycle high elevation atacama snow Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
permafrost freeze–thaw cycle high elevation atacama snow Environmental sciences GE1-350 Ecology QH540-549.5 Gabriela Mena Kenji Yoshikawa Norbert Schorghofer César Pastén Felipe Agustin Ochoa Yuzuru Yoshii Mamoru Doi Takeshi Miyata Hidenori Takahashi Gino Casassa Toshio Sone Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
topic_facet |
permafrost freeze–thaw cycle high elevation atacama snow Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
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°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. |
format |
Article in Journal/Newspaper |
author |
Gabriela Mena Kenji Yoshikawa Norbert Schorghofer César Pastén Felipe Agustin Ochoa Yuzuru Yoshii Mamoru Doi Takeshi Miyata Hidenori Takahashi Gino Casassa Toshio Sone |
author_facet |
Gabriela Mena Kenji Yoshikawa Norbert Schorghofer César Pastén Felipe Agustin Ochoa Yuzuru Yoshii Mamoru Doi Takeshi Miyata Hidenori Takahashi Gino Casassa Toshio Sone |
author_sort |
Gabriela Mena |
title |
Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
title_short |
Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
title_full |
Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
title_fullStr |
Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
title_full_unstemmed |
Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor Volcano, Atacama, northern Chile |
title_sort |
freeze–thaw cycles and snow impact at arid permafrost region in chajnantor volcano, atacama, northern chile |
publisher |
Taylor & Francis Group |
publishDate |
2021 |
url |
https://doi.org/10.1080/15230430.2021.1878739 https://doaj.org/article/7821f2d259eb4f5195f5b60a12e600f9 |
genre |
Antarctic and Alpine Research Arctic permafrost |
genre_facet |
Antarctic and Alpine Research Arctic permafrost |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 60-66 (2021) |
op_relation |
http://dx.doi.org/10.1080/15230430.2021.1878739 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2021.1878739 https://doaj.org/article/7821f2d259eb4f5195f5b60a12e600f9 |
op_doi |
https://doi.org/10.1080/15230430.2021.1878739 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
53 |
container_issue |
1 |
container_start_page |
60 |
op_container_end_page |
66 |
_version_ |
1766286953409413120 |