Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet)
A 198.8 m deep borehole was drilled through ice to subglacial bedrock in the northwestern marginal part of Princess Elizabeth Land, ~12 km south of Zhongshan Station, in January–February 2019. Three years later, in February 2022, the borehole temperature profile was measured, and the geothermal heat...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2023-10-01
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| Series: | Journal of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143023000436/type/journal_article |
| _version_ | 1827785947439169536 |
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| author | Pavel G. Talalay Da Gong Xiaopeng Fan Yazhou Li German Leitchenkov Bing Li Nan Zhang Rusheng Wang Yang Yang Jialin Hong |
| author_facet | Pavel G. Talalay Da Gong Xiaopeng Fan Yazhou Li German Leitchenkov Bing Li Nan Zhang Rusheng Wang Yang Yang Jialin Hong |
| author_sort | Pavel G. Talalay |
| collection | DOAJ |
| description | A 198.8 m deep borehole was drilled through ice to subglacial bedrock in the northwestern marginal part of Princess Elizabeth Land, ~12 km south of Zhongshan Station, in January–February 2019. Three years later, in February 2022, the borehole temperature profile was measured, and the geothermal heat flow (GHF) was estimated using a 1-D time-dependent energy-balance equation. For a depth corresponding to the base of the ice sheet, the GHF was calculated as 72.6 ± 2.3 mW m−2 and temperature −4.53 ± 0.27°C. The regional averages estimated for this area based, generally, on tectonic setting vary from 55 to 66 mW m−2. A higher GHF is interpreted to originate mostly from the occurrence of metamorphic complexes intruded by heat-producing elements in the subglacial bedrock below the drill site. |
| first_indexed | 2024-03-11T16:26:59Z |
| format | Article |
| id | doaj.art-36132d461103449585673d1e4bd886b7 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-03-11T16:26:59Z |
| publishDate | 2023-10-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-36132d461103449585673d1e4bd886b72023-10-24T09:48:09ZengCambridge University PressJournal of Glaciology0022-14301727-56522023-10-01691524152810.1017/jog.2023.43Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet)Pavel G. Talalay0https://orcid.org/0000-0002-8230-4600Da Gong1Xiaopeng Fan2Yazhou Li3German Leitchenkov4https://orcid.org/0000-0001-6316-8511Bing Li5Nan Zhang6Rusheng Wang7Yang Yang8Jialin Hong9Polar Research Center, Jilin University, Changchun, China China University of Geosciences, Beijing, ChinaPolar Research Center, Jilin University, Changchun, ChinaPolar Research Center, Jilin University, Changchun, ChinaChina University of Geosciences, Beijing, ChinaAll-Russian Scientific Research Institute for Geology and Mineral Resources of the Ocean (‘VNIIOkeangeologia’), Saint-Petersburg, Russia Institute of Earth Sciences, Saint-Petersburg State University, Saint-Petersburg, RussiaChina University of Geosciences, Beijing, ChinaPolar Research Center, Jilin University, Changchun, ChinaPolar Research Center, Jilin University, Changchun, ChinaPolar Research Center, Jilin University, Changchun, ChinaPolar Research Center, Jilin University, Changchun, ChinaA 198.8 m deep borehole was drilled through ice to subglacial bedrock in the northwestern marginal part of Princess Elizabeth Land, ~12 km south of Zhongshan Station, in January–February 2019. Three years later, in February 2022, the borehole temperature profile was measured, and the geothermal heat flow (GHF) was estimated using a 1-D time-dependent energy-balance equation. For a depth corresponding to the base of the ice sheet, the GHF was calculated as 72.6 ± 2.3 mW m−2 and temperature −4.53 ± 0.27°C. The regional averages estimated for this area based, generally, on tectonic setting vary from 55 to 66 mW m−2. A higher GHF is interpreted to originate mostly from the occurrence of metamorphic complexes intruded by heat-producing elements in the subglacial bedrock below the drill site.https://www.cambridge.org/core/product/identifier/S0022143023000436/type/journal_articleglaciological instruments and methodsice temperaturesubglacial exploration geophysics |
| spellingShingle | Pavel G. Talalay Da Gong Xiaopeng Fan Yazhou Li German Leitchenkov Bing Li Nan Zhang Rusheng Wang Yang Yang Jialin Hong Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) Journal of Glaciology glaciological instruments and methods ice temperature subglacial exploration geophysics |
| title | Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) |
| title_full | Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) |
| title_fullStr | Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) |
| title_full_unstemmed | Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) |
| title_short | Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet) |
| title_sort | geothermal heat flow from borehole measurements at the margin of princess elizabeth land east antarctic ice sheet |
| topic | glaciological instruments and methods ice temperature subglacial exploration geophysics |
| url | https://www.cambridge.org/core/product/identifier/S0022143023000436/type/journal_article |
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