Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau
Heat transfer mechanisms governing the permafrost-atmosphere interaction are essential to understand present permafrost degradation. Hydraulic and thermal dynamics of various active layers at four di erent permafrost sites on the QTP were investigated with various geophysical methods and soil-weathe...
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ftunivheidelb:oai:archiv.ub.uni-heidelberg.de:11934 2023-11-05T03:44:34+01:00 Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau Pan, Xicai 2011 application/pdf https://archiv.ub.uni-heidelberg.de/volltextserver/11934/ https://archiv.ub.uni-heidelberg.de/volltextserver/11934/1/2011_Pan_Xicai.pdf https://doi.org/10.11588/heidok.00011934 https://nbn-resolving.org/urn:nbn:de:bsz:16-opus-119346 eng eng https://archiv.ub.uni-heidelberg.de/volltextserver/11934/1/2011_Pan_Xicai.pdf doi:10.11588/heidok.00011934 urn:nbn:de:bsz:16-opus-119346 Pan, Xicai (2011) Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau. [Dissertation] info:eu-repo/semantics/openAccess http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html 550 550 Earth sciences Dissertation info:eu-repo/semantics/doctoralThesis NonPeerReviewed 2011 ftunivheidelb https://doi.org/10.11588/heidok.00011934 2023-10-10T12:06:07Z Heat transfer mechanisms governing the permafrost-atmosphere interaction are essential to understand present permafrost degradation. Hydraulic and thermal dynamics of various active layers at four di erent permafrost sites on the QTP were investigated with various geophysical methods and soil-weather monitoring stations. Complex eld data were detected and processed with appropriate methods. The principal physical processes controlling the active-layer thermal regime were characterized with a surface energy balance method at Chumaer, Qumahe and Tianshuihai. As a geophysical tool for characterizing soil properties, multi-channel GPR was further explored. Through Monte Carlo uncertainty analysis and eld tests, the accuracy of the multi-channel GPR method and its capability of quantifying eld-scale hydraulic properties and processes was validated at a non-permafrost sandy site. Based on precise soil temperature and soil water content data, heat transfer in various active layers were characterized with a transfer function method. Given the characteristics of ground heat transfer at the study sites, an inverse method for seasonal thermal conductivity parameterization was tested. Combining the transfer function method and the multi-channel GPR, a eld-scale thermal conductivity parameterization was proposed at the end. Doctoral or Postdoctoral Thesis permafrost Heidelberg University: HeiDok |
institution |
Open Polar |
collection |
Heidelberg University: HeiDok |
op_collection_id |
ftunivheidelb |
language |
English |
topic |
550 550 Earth sciences |
spellingShingle |
550 550 Earth sciences Pan, Xicai Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
topic_facet |
550 550 Earth sciences |
description |
Heat transfer mechanisms governing the permafrost-atmosphere interaction are essential to understand present permafrost degradation. Hydraulic and thermal dynamics of various active layers at four di erent permafrost sites on the QTP were investigated with various geophysical methods and soil-weather monitoring stations. Complex eld data were detected and processed with appropriate methods. The principal physical processes controlling the active-layer thermal regime were characterized with a surface energy balance method at Chumaer, Qumahe and Tianshuihai. As a geophysical tool for characterizing soil properties, multi-channel GPR was further explored. Through Monte Carlo uncertainty analysis and eld tests, the accuracy of the multi-channel GPR method and its capability of quantifying eld-scale hydraulic properties and processes was validated at a non-permafrost sandy site. Based on precise soil temperature and soil water content data, heat transfer in various active layers were characterized with a transfer function method. Given the characteristics of ground heat transfer at the study sites, an inverse method for seasonal thermal conductivity parameterization was tested. Combining the transfer function method and the multi-channel GPR, a eld-scale thermal conductivity parameterization was proposed at the end. |
format |
Doctoral or Postdoctoral Thesis |
author |
Pan, Xicai |
author_facet |
Pan, Xicai |
author_sort |
Pan, Xicai |
title |
Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
title_short |
Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
title_full |
Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
title_fullStr |
Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
title_full_unstemmed |
Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau |
title_sort |
hydraulic and thermal dynamics at various permafrost sites on the qinghai-tibet plateau |
publishDate |
2011 |
url |
https://archiv.ub.uni-heidelberg.de/volltextserver/11934/ https://archiv.ub.uni-heidelberg.de/volltextserver/11934/1/2011_Pan_Xicai.pdf https://doi.org/10.11588/heidok.00011934 https://nbn-resolving.org/urn:nbn:de:bsz:16-opus-119346 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://archiv.ub.uni-heidelberg.de/volltextserver/11934/1/2011_Pan_Xicai.pdf doi:10.11588/heidok.00011934 urn:nbn:de:bsz:16-opus-119346 Pan, Xicai (2011) Hydraulic and Thermal Dynamics at Various Permafrost Sites on the Qinghai-Tibet Plateau. [Dissertation] |
op_rights |
info:eu-repo/semantics/openAccess http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html |
op_doi |
https://doi.org/10.11588/heidok.00011934 |
_version_ |
1781704752738861056 |