Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar
Abstract The density–depth relationship of the Antarctic ice sheet is important for establishing a high-precision surface mass balance model and predicting future ice-sheet contributions to global sea levels. A new algorithm is used to reconstruct firn density and densification rate by inverting mon...
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Online Access: | http://dx.doi.org/10.1017/jog.2021.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000708 |
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crcambridgeupr:10.1017/jog.2021.70 2024-03-03T08:38:42+00:00 Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar Yang, Wangxiao Dou, Yinke Zhao, Bo Guo, Jingxue Tang, Xueyuan Zuo, Guangyu Wang, Yuchen Chen, Yan Zhang, Yuzhong 2021 http://dx.doi.org/10.1017/jog.2021.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000708 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 67, issue 266, page 1213-1227 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2021 crcambridgeupr https://doi.org/10.1017/jog.2021.70 2024-02-08T08:45:12Z Abstract The density–depth relationship of the Antarctic ice sheet is important for establishing a high-precision surface mass balance model and predicting future ice-sheet contributions to global sea levels. A new algorithm is used to reconstruct firn density and densification rate by inverting monostatic radio wave echoes from ground-operated frequency-modulated continuous wave radar data collected near four ice cores along the transect from Zhongshan Station to Dome A. The inverted density profile is consistent with the core data within 5.54% root mean square error. Due to snow redistribution, the densification rate within 88 km of ice core DT401 is correlated with the accumulation rate and varies greatly over horizontal distances of <5 km. That is, the depth at which a critical density of 830 kg m −3 is reached decreases and densification rate increases in high-accumulation regions but decreases in low-accumulation regions. This inversion technique can be used to analyse more Antarctic radar data and obtain the density distribution trend, which can improve the accuracy of mass-balance estimations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Journal of Glaciology Cambridge University Press Antarctic The Antarctic East Antarctica Zhongshan ENVELOPE(76.371,76.371,-69.373,-69.373) Zhongshan Station ENVELOPE(76.371,76.371,-69.373,-69.373) Journal of Glaciology 1 15 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Yang, Wangxiao Dou, Yinke Zhao, Bo Guo, Jingxue Tang, Xueyuan Zuo, Guangyu Wang, Yuchen Chen, Yan Zhang, Yuzhong Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
topic_facet |
Earth-Surface Processes |
description |
Abstract The density–depth relationship of the Antarctic ice sheet is important for establishing a high-precision surface mass balance model and predicting future ice-sheet contributions to global sea levels. A new algorithm is used to reconstruct firn density and densification rate by inverting monostatic radio wave echoes from ground-operated frequency-modulated continuous wave radar data collected near four ice cores along the transect from Zhongshan Station to Dome A. The inverted density profile is consistent with the core data within 5.54% root mean square error. Due to snow redistribution, the densification rate within 88 km of ice core DT401 is correlated with the accumulation rate and varies greatly over horizontal distances of <5 km. That is, the depth at which a critical density of 830 kg m −3 is reached decreases and densification rate increases in high-accumulation regions but decreases in low-accumulation regions. This inversion technique can be used to analyse more Antarctic radar data and obtain the density distribution trend, which can improve the accuracy of mass-balance estimations. |
format |
Article in Journal/Newspaper |
author |
Yang, Wangxiao Dou, Yinke Zhao, Bo Guo, Jingxue Tang, Xueyuan Zuo, Guangyu Wang, Yuchen Chen, Yan Zhang, Yuzhong |
author_facet |
Yang, Wangxiao Dou, Yinke Zhao, Bo Guo, Jingxue Tang, Xueyuan Zuo, Guangyu Wang, Yuchen Chen, Yan Zhang, Yuzhong |
author_sort |
Yang, Wangxiao |
title |
Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
title_short |
Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
title_full |
Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
title_fullStr |
Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
title_full_unstemmed |
Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar |
title_sort |
inversion for the density–depth profile of dome a, east antarctica, using frequency-modulated continuous wave radar |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/jog.2021.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000708 |
long_lat |
ENVELOPE(76.371,76.371,-69.373,-69.373) ENVELOPE(76.371,76.371,-69.373,-69.373) |
geographic |
Antarctic The Antarctic East Antarctica Zhongshan Zhongshan Station |
geographic_facet |
Antarctic The Antarctic East Antarctica Zhongshan Zhongshan Station |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 67, issue 266, page 1213-1227 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2021.70 |
container_title |
Journal of Glaciology |
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15 |
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1792507138865627136 |