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https://doi.org/10.5194/tc-2021-332
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2021-332
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
03 Dec 2021
| 03 Dec 2021
Status: this preprint has been withdrawn by the authors.
New large subglacial lake in Princess Elizabeth Land, East Antarctica, detected by airborne geophysical observations
Abstract. Knowledge of subglacial lakes is important for understanding the stability of the Antarctica Ice Sheet (AIS) and its contribution to the global sea-level change. We designed an intensified airborne campaign to collect geophysical data in Princess Elizabeth Land (PEL), East Antarctica, during the 2015–2019 CHINARE expeditions. We developed an innovative method to build a set of evidence of a newly detected subglacial lake, Lake Zhongshan. Adaptive RES data analysis allowed us to detect the lake surface and extent. We quantified the lake depth and volume via gravity modeling. Another dataset collected at Lake Vostok provided the ground truth. The results revealed that Lake Zhongshan, located at 73°26'53"S, 80°30'39"E and ~3,603 m below surface, has an area of 328 ± 1 km2, making it the only one in PEL and the fifth largest in Antarctica. These findings are important for understanding subglacial hydrodynamics in PEL, as well as the stability of the AIS.
This preprint has been withdrawn.
How to cite. Li, L., Zhao, A., Feng, T., Cui, X., An, L., Xu, B., Lang, S., Jing, L., Hao, T., Guo, J., Sun, B., and Li, R.: New large subglacial lake in Princess Elizabeth Land, East Antarctica, detected by airborne geophysical observations, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2021-332, 2021.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Lin Li
Polar Research Institute of China, Shanghai, China
Aiguo Zhao
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Tiantian Feng
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Xiangbin Cui
Polar Research Institute of China, Shanghai, China
Lu An
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Ben Xu
Faculty of Information Technology, Beijing University of Technology, Beijing, China
Shinan Lang
Faculty of Information Technology, Beijing University of Technology, Beijing, China
Liwen Jing
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Jingxue Guo
Polar Research Institute of China, Shanghai, China
Bo Sun
Polar Research Institute of China, Shanghai, China
Center for Spatial Information Science and Sustainable Development Applications, Tongji University, Shanghai, China
College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
Short summary
No subglacial lakes have been reported in Princess Elizabeth Land (PEL), East Antarctica. In this study, thanks to a new suite of airborne geophysical observations in PEL, including RES and gravity data collected during the Chinese National Antarctic Research Expedition, we detected a large subglacial lake of ~45 km in length, ~11 km in width, and ~250 m in depth. These findings will help us understand ice sheet stability in the PEL region.
No subglacial lakes have been reported in Princess Elizabeth Land (PEL), East Antarctica. In...