| DOI: | 10.1002/2015GL065074
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| 论文题名: | A glimpse beneath Antarctic sea ice: Platelet layer volume from multifrequency electromagnetic induction sounding |
| 作者: | Hunkeler P.A.; Hoppmann M.; Hendricks S.; Kalscheuer T.; Gerdes R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9536
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| EISSN: | 1944-9267
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| 出版年: | 2016
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| 卷: | 43, 期:1 | | 起始页码: | 222
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| 结束页码: | 231
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| 语种: | 英语
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| 英文关键词: | Antarctic sea ice
; multifrequency EM
; ocean/ice shelf interaction
; platelet ice
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| Scopus关键词: | Electromagnetic induction
; Platelets
; Sea ice
; Antarctic sea ice
; Electromagnetic induction sounding
; Field observations
; Multi frequency
; Ocean/ice shelf interaction
; Platelet ices
; Point measurement
; Unconsolidated layers
; Ice
; electrical conductivity
; electromagnetic field
; frequency analysis
; ice crystal
; ice shelf
; ice thickness
; ice-ocean interaction
; sea ice
; volume change
; Antarctica
; Southern Ocean
; Weddell Sea
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| 英文摘要: | In Antarctica, ice crystals emerge from ice shelf cavities and accumulate in unconsolidated layers beneath nearby sea ice. Such sub-ice platelet layers form a unique habitat and serve as an indicator for the state of an ice shelf. However, the lack of a suitable methodology impedes an efficient quantification of this phenomenon on scales beyond point measurements. In this study, we inverted multifrequency electromagnetic (EM) induction soundings, obtained on fast ice with an underlying platelet layer along profiles of 100 km length in the eastern Weddell Sea. EM-derived platelet layer thickness and conductivity are consistent with other field observations. Our results suggest that platelet layer volume is higher than previously thought in this region and that platelet layer ice volume fraction is proportional to its thickness. We conclude that multifrequency EM is a suitable tool to determine platelet layer volume, with the potential to obtain crucial knowledge of associated processes in otherwise inaccessible ice shelf cavities. © 2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970912919&doi=10.1002%2f2015GL065074&partnerID=40&md5=034dde6e204d140dc84f3607c3f902e9
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10499
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
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| Recommended Citation: | |
Hunkeler P.A.,Hoppmann M.,Hendricks S.,et al. A glimpse beneath Antarctic sea ice: Platelet layer volume from multifrequency electromagnetic induction sounding[J]. Geophysical Research Letters,2016-01-01,43(1).
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