Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method
Within the gas hydrate drilling project in the Qilian Mountain permafrost region, a temperature–depth profile measured from borehole DK-12 in Juhugeng of Muri Coalfield, Tianjun County, Qinghai Province, China, was analyzed to infer recent climate changes. The long-term surface temperature and therm...
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ftdoajarticles:oai:doaj.org/article:88aa1fdd93dd4e3691ec625ad43518c0 2023-05-15T14:14:31+02:00 Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method Jia Liu Guanli Jiang Qingbai Wu Tingjun Zhang Siru Gao 2020-01-01T00:00:00Z https://doi.org/10.1080/15230430.2020.1801149 https://doaj.org/article/88aa1fdd93dd4e3691ec625ad43518c0 EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2020.1801149 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2020.1801149 https://doaj.org/article/88aa1fdd93dd4e3691ec625ad43518c0 Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 450-460 (2020) borehole paleothermometry geothermal gradient permafrost tikhonov regularization Environmental sciences GE1-350 Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1080/15230430.2020.1801149 2022-12-31T15:28:21Z Within the gas hydrate drilling project in the Qilian Mountain permafrost region, a temperature–depth profile measured from borehole DK-12 in Juhugeng of Muri Coalfield, Tianjun County, Qinghai Province, China, was analyzed to infer recent climate changes. The long-term surface temperature and thermal gradient were retrieved from borehole temperature measurements. The ground surface temperature (GST) changes were reconstructed by inversion of transient temperature perturbations through solving an inverse heat conduction problem using the Tikhonov method. Based on the instability of this kind of inverse problem and the nature of method-dependent features of borehole paleothermometry, we initially applied the Tikhonov regularization technique to obtain a stable past GST variation pattern with relatively low resolution. The inversion results showed that this region experienced temperature fluctuation with a total warming of 3°C (±1.6°C) from 1400 to the 2010s and a more exacerbated warming starting from the 1960s. The GST trend fit the surface air temperature observation trend from the nearest Yeniugou meteorological station. This work fills the gap created by limited meteorological records in the Muli area and extends knowledge of ground surface temperature trends going back more than ten centuries. Article in Journal/Newspaper Antarctic and Alpine Research Arctic permafrost Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 52 1 450 460 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
borehole paleothermometry geothermal gradient permafrost tikhonov regularization Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
borehole paleothermometry geothermal gradient permafrost tikhonov regularization Environmental sciences GE1-350 Ecology QH540-549.5 Jia Liu Guanli Jiang Qingbai Wu Tingjun Zhang Siru Gao Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
topic_facet |
borehole paleothermometry geothermal gradient permafrost tikhonov regularization Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Within the gas hydrate drilling project in the Qilian Mountain permafrost region, a temperature–depth profile measured from borehole DK-12 in Juhugeng of Muri Coalfield, Tianjun County, Qinghai Province, China, was analyzed to infer recent climate changes. The long-term surface temperature and thermal gradient were retrieved from borehole temperature measurements. The ground surface temperature (GST) changes were reconstructed by inversion of transient temperature perturbations through solving an inverse heat conduction problem using the Tikhonov method. Based on the instability of this kind of inverse problem and the nature of method-dependent features of borehole paleothermometry, we initially applied the Tikhonov regularization technique to obtain a stable past GST variation pattern with relatively low resolution. The inversion results showed that this region experienced temperature fluctuation with a total warming of 3°C (±1.6°C) from 1400 to the 2010s and a more exacerbated warming starting from the 1960s. The GST trend fit the surface air temperature observation trend from the nearest Yeniugou meteorological station. This work fills the gap created by limited meteorological records in the Muli area and extends knowledge of ground surface temperature trends going back more than ten centuries. |
format |
Article in Journal/Newspaper |
author |
Jia Liu Guanli Jiang Qingbai Wu Tingjun Zhang Siru Gao |
author_facet |
Jia Liu Guanli Jiang Qingbai Wu Tingjun Zhang Siru Gao |
author_sort |
Jia Liu |
title |
Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
title_short |
Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
title_full |
Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
title_fullStr |
Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
title_full_unstemmed |
Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method |
title_sort |
regional climate change signals inferred from a borehole temperature profile in muli, qilian mountain, using the tikhonov method |
publisher |
Taylor & Francis Group |
publishDate |
2020 |
url |
https://doi.org/10.1080/15230430.2020.1801149 https://doaj.org/article/88aa1fdd93dd4e3691ec625ad43518c0 |
genre |
Antarctic and Alpine Research Arctic permafrost |
genre_facet |
Antarctic and Alpine Research Arctic permafrost |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 450-460 (2020) |
op_relation |
http://dx.doi.org/10.1080/15230430.2020.1801149 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2020.1801149 https://doaj.org/article/88aa1fdd93dd4e3691ec625ad43518c0 |
op_doi |
https://doi.org/10.1080/15230430.2020.1801149 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
52 |
container_issue |
1 |
container_start_page |
450 |
op_container_end_page |
460 |
_version_ |
1766286941556310016 |