Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010
In this study, we investigated changes in active layer thickness (ALT) and permafrost temperatures at different depths using data from the permafrost monitoring network along the Qinghai-Xizang (Tibet) Railway (QXR) since 2005. Among these sites, mean ALT is ~3.1 m, with a range of ~1.1 to 5.9 m. Fr...
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ftdoajarticles:oai:doaj.org/article:23c650173f9044309d80df3836db059f 2023-05-15T13:03:00+02:00 Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 Q. Wu T. Zhang Y. Liu 2012-05-01T00:00:00Z https://doi.org/10.5194/tc-6-607-2012 https://doaj.org/article/23c650173f9044309d80df3836db059f EN eng Copernicus Publications http://www.the-cryosphere.net/6/607/2012/tc-6-607-2012.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-6-607-2012 1994-0416 1994-0424 https://doaj.org/article/23c650173f9044309d80df3836db059f The Cryosphere, Vol 6, Iss 3, Pp 607-612 (2012) Environmental sciences GE1-350 Geology QE1-996.5 article 2012 ftdoajarticles https://doi.org/10.5194/tc-6-607-2012 2022-12-31T07:08:02Z In this study, we investigated changes in active layer thickness (ALT) and permafrost temperatures at different depths using data from the permafrost monitoring network along the Qinghai-Xizang (Tibet) Railway (QXR) since 2005. Among these sites, mean ALT is ~3.1 m, with a range of ~1.1 to 5.9 m. From 2006 through 2010, ALT has increased at a rate of ~6.3 cm a −1 . The mean rate of permafrost temperature rise at the depth of 6.0 m is ~0.02 °C a −1 , estimated by linear regression using 5 yr of data, and the mean rate of mean annual ground temperature (MAGT) rise at a depth of zero amplitude is ~0.012 °C a −1 . Changes for colder permafrost (MAGT <−1.0 °C) are greater than changes for relatively warmer permafrost (MAGT >−1.0 °C). This is consistent with results observed in the Arctic and subarctic. Article in Journal/Newspaper Active layer thickness Arctic permafrost Subarctic The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 6 3 607 612 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 Q. Wu T. Zhang Y. Liu Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
In this study, we investigated changes in active layer thickness (ALT) and permafrost temperatures at different depths using data from the permafrost monitoring network along the Qinghai-Xizang (Tibet) Railway (QXR) since 2005. Among these sites, mean ALT is ~3.1 m, with a range of ~1.1 to 5.9 m. From 2006 through 2010, ALT has increased at a rate of ~6.3 cm a −1 . The mean rate of permafrost temperature rise at the depth of 6.0 m is ~0.02 °C a −1 , estimated by linear regression using 5 yr of data, and the mean rate of mean annual ground temperature (MAGT) rise at a depth of zero amplitude is ~0.012 °C a −1 . Changes for colder permafrost (MAGT <−1.0 °C) are greater than changes for relatively warmer permafrost (MAGT >−1.0 °C). This is consistent with results observed in the Arctic and subarctic. |
format |
Article in Journal/Newspaper |
author |
Q. Wu T. Zhang Y. Liu |
author_facet |
Q. Wu T. Zhang Y. Liu |
author_sort |
Q. Wu |
title |
Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
title_short |
Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
title_full |
Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
title_fullStr |
Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
title_full_unstemmed |
Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010 |
title_sort |
thermal state of the active layer and permafrost along the qinghai-xizang (tibet) railway from 2006 to 2010 |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-607-2012 https://doaj.org/article/23c650173f9044309d80df3836db059f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Active layer thickness Arctic permafrost Subarctic The Cryosphere |
genre_facet |
Active layer thickness Arctic permafrost Subarctic The Cryosphere |
op_source |
The Cryosphere, Vol 6, Iss 3, Pp 607-612 (2012) |
op_relation |
http://www.the-cryosphere.net/6/607/2012/tc-6-607-2012.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-6-607-2012 1994-0416 1994-0424 https://doaj.org/article/23c650173f9044309d80df3836db059f |
op_doi |
https://doi.org/10.5194/tc-6-607-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
3 |
container_start_page |
607 |
op_container_end_page |
612 |
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1766325996952223744 |