Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau
The distribution and variations of permafrost in the Xidatan region, the northern permafrost boundary of the Qinghai-Tibet Plateau, were examined and analyzed using ground penetrating radar (GPR), borehole drilling, and thermal monitoring data. Results from GPR profiles together with borehole verifi...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/35421 2023-05-15T17:55:16+02:00 Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau Luo, Jing Niu, Fu-jun Lin, Zhan-ju Liu, Ming-hao Yin, Guo-an 2018 http://ir.imde.ac.cn/handle/131551/35421 https://doi.org/10.1007/s11629-017-4731-2 英语 eng JOURNAL OF MOUNTAIN SCIENCE http://ir.imde.ac.cn/handle/131551/35421 doi:10.1007/s11629-017-4731-2 cn.org.cspace.api.content.CopyrightPolicy@737f9015 Qinghai-Tibet Plateau Permafrost Climate warming Permafrost limit Ground penetrating radar Thermal monitoring Article 期刊论文 2018 ftchinacadscimhe https://doi.org/10.1007/s11629-017-4731-2 2022-12-19T18:23:29Z The distribution and variations of permafrost in the Xidatan region, the northern permafrost boundary of the Qinghai-Tibet Plateau, were examined and analyzed using ground penetrating radar (GPR), borehole drilling, and thermal monitoring data. Results from GPR profiles together with borehole verification indicate that the lowest elevation limit of permafrost occurrence is 4369 m above sea level in 2012. Compared to previous studies, the maximal rise of permafrost limit is 28 m from 1975 to 2012. The total area of permafrost in the study region has been decreased by 13.8%. One of the two previously existed permafrost islands has disappeared and second one has reduced by 76% in area during the past similar to 40 years. In addition, the ground temperature in the Xidatan region has increased from 2012 to 2016, with a mean warming rate of similar to 0.004A degrees C a-1 and similar to 0.003A degrees C a-1 at the depths of 6 and 15 m, respectively. The rising of permafrost limit in the Xidatan region is mainly due to global warming. However, some non-climatic factors such as hydrologic processes and anthropic disturbances have also induced permafrost degradation. If the air temperature continues to increase, the northern permafrost boundary in the Qinghai-Tibet Plateau may continue rising in the future. Article in Journal/Newspaper permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Journal of Mountain Science 15 4 765 778 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Qinghai-Tibet Plateau Permafrost Climate warming Permafrost limit Ground penetrating radar Thermal monitoring |
spellingShingle |
Qinghai-Tibet Plateau Permafrost Climate warming Permafrost limit Ground penetrating radar Thermal monitoring Luo, Jing Niu, Fu-jun Lin, Zhan-ju Liu, Ming-hao Yin, Guo-an Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
topic_facet |
Qinghai-Tibet Plateau Permafrost Climate warming Permafrost limit Ground penetrating radar Thermal monitoring |
description |
The distribution and variations of permafrost in the Xidatan region, the northern permafrost boundary of the Qinghai-Tibet Plateau, were examined and analyzed using ground penetrating radar (GPR), borehole drilling, and thermal monitoring data. Results from GPR profiles together with borehole verification indicate that the lowest elevation limit of permafrost occurrence is 4369 m above sea level in 2012. Compared to previous studies, the maximal rise of permafrost limit is 28 m from 1975 to 2012. The total area of permafrost in the study region has been decreased by 13.8%. One of the two previously existed permafrost islands has disappeared and second one has reduced by 76% in area during the past similar to 40 years. In addition, the ground temperature in the Xidatan region has increased from 2012 to 2016, with a mean warming rate of similar to 0.004A degrees C a-1 and similar to 0.003A degrees C a-1 at the depths of 6 and 15 m, respectively. The rising of permafrost limit in the Xidatan region is mainly due to global warming. However, some non-climatic factors such as hydrologic processes and anthropic disturbances have also induced permafrost degradation. If the air temperature continues to increase, the northern permafrost boundary in the Qinghai-Tibet Plateau may continue rising in the future. |
format |
Article in Journal/Newspaper |
author |
Luo, Jing Niu, Fu-jun Lin, Zhan-ju Liu, Ming-hao Yin, Guo-an |
author_facet |
Luo, Jing Niu, Fu-jun Lin, Zhan-ju Liu, Ming-hao Yin, Guo-an |
author_sort |
Luo, Jing |
title |
Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
title_short |
Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
title_full |
Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
title_fullStr |
Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
title_full_unstemmed |
Variations in the northern permafrost boundary over the last four decades in the Xidatan region, Qinghai-Tibet Plateau |
title_sort |
variations in the northern permafrost boundary over the last four decades in the xidatan region, qinghai-tibet plateau |
publishDate |
2018 |
url |
http://ir.imde.ac.cn/handle/131551/35421 https://doi.org/10.1007/s11629-017-4731-2 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
JOURNAL OF MOUNTAIN SCIENCE http://ir.imde.ac.cn/handle/131551/35421 doi:10.1007/s11629-017-4731-2 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@737f9015 |
op_doi |
https://doi.org/10.1007/s11629-017-4731-2 |
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Journal of Mountain Science |
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15 |
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4 |
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765 |
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778 |
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1766163191663951872 |