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...
Published in: | Arctic, Antarctic, and Alpine Research |
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Online Access: | https://doi.org/10.1080/15230430.2021.1878739 https://repositorio.uchile.cl/handle/2250/183635 |
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ftunivchile:oai:repositorio.uchile.cl:2250/183635 2023-05-15T14:14:00+02:00 Freeze–thaw cycles and snow impact at arid permafrost region in Chajnantor volcano, Atacama, northern Chile Mena, Gabriela Yoshikawa, Kenji Schorghofer, Norbert Pastén, Cesar Ochoa, Felipe Agustín Yoshii, Yuzuru Doi, Mamoru Miyata, Takeshi Takahashi, Hidenori Casassa Rogazinski, Gino Sone, Toshio 2021 application/pdf https://doi.org/10.1080/15230430.2021.1878739 https://repositorio.uchile.cl/handle/2250/183635 en eng Taylor & Francis Arctic, Antarctic, and Alpine Research 2021, VOL. 53, NO. 1, 60–66 doi:10.1080/15230430.2021.1878739 https://repositorio.uchile.cl/handle/2250/183635 Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ CC-BY-NC-ND Arctic, Antarctic, and Alpine Research Permafrost Freeze–thaw cycle High elevation Atacama Snow Artículo de revista 2021 ftunivchile https://doi.org/10.1080/15230430.2021.1878739 2022-04-23T23:49:37Z 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. University of Tokyo Atacama Observatory (TAO) Department of Civil Engineering, University of Chile Versión publicada - versión final del editor Article in Journal/Newspaper Antarctic and Alpine Research Arctic permafrost Universidad de Chile: Repositorio académico Arctic, Antarctic, and Alpine Research 53 1 60 66 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Permafrost Freeze–thaw cycle High elevation Atacama Snow |
spellingShingle |
Permafrost Freeze–thaw cycle High elevation Atacama Snow Mena, Gabriela Yoshikawa, Kenji Schorghofer, Norbert Pastén, Cesar Ochoa, Felipe Agustín Yoshii, Yuzuru Doi, Mamoru Miyata, Takeshi Takahashi, Hidenori Casassa Rogazinski, Gino Sone, Toshio 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 |
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. University of Tokyo Atacama Observatory (TAO) Department of Civil Engineering, University of Chile Versión publicada - versión final del editor |
format |
Article in Journal/Newspaper |
author |
Mena, Gabriela Yoshikawa, Kenji Schorghofer, Norbert Pastén, Cesar Ochoa, Felipe Agustín Yoshii, Yuzuru Doi, Mamoru Miyata, Takeshi Takahashi, Hidenori Casassa Rogazinski, Gino Sone, Toshio |
author_facet |
Mena, Gabriela Yoshikawa, Kenji Schorghofer, Norbert Pastén, Cesar Ochoa, Felipe Agustín Yoshii, Yuzuru Doi, Mamoru Miyata, Takeshi Takahashi, Hidenori Casassa Rogazinski, Gino Sone, Toshio |
author_sort |
Mena, Gabriela |
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 |
publishDate |
2021 |
url |
https://doi.org/10.1080/15230430.2021.1878739 https://repositorio.uchile.cl/handle/2250/183635 |
genre |
Antarctic and Alpine Research Arctic permafrost |
genre_facet |
Antarctic and Alpine Research Arctic permafrost |
op_source |
Arctic, Antarctic, and Alpine Research |
op_relation |
Arctic, Antarctic, and Alpine Research 2021, VOL. 53, NO. 1, 60–66 doi:10.1080/15230430.2021.1878739 https://repositorio.uchile.cl/handle/2250/183635 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ |
op_rightsnorm |
CC-BY-NC-ND |
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 |
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1766286516258078720 |