Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet)
In: Journal of Glaciology, Jg. 69 (2023-10-01), S. 1524-1528
Online
academicJournal
Zugriff:
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.
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Geothermal heat flow from borehole measurements at the margin of Princess Elizabeth Land (East Antarctic Ice Sheet)
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Autor/in / Beteiligte Person: | Talalay, Pavel G. ; Gong, Da ; Fan, Xiaopeng ; Li, Yazhou ; Leitchenkov, German ; Li, Bing ; Zhang, Nan ; Wang, Rusheng ; Yang, Yang ; Hong, Jialin |
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Zeitschrift: | Journal of Glaciology, Jg. 69 (2023-10-01), S. 1524-1528 |
Veröffentlichung: | Cambridge University Press, 2023 |
Medientyp: | academicJournal |
ISSN: | 0022-1430 (print) ; 1727-5652 (print) |
DOI: | 10.1017/jog.2023.43 |
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