| DOI: | 10.1002/grl.50134
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| 论文题名: | High-resolution radar measurements of snow avalanches |
| 作者: | Vriend N.M.; McElwaine J.N.; Sovilla B.; Keylock C.J.; Ash M.; Brennan P.V.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9299
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| EISSN: | 1944-9030
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| 出版年: | 2013
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| 卷: | 40, 期:4 | | 起始页码: | 727
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| 结束页码: | 731
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| 语种: | 英语
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| 英文关键词: | Doppler radar
; imaging
; phased array radar
; snow avalanche
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| Scopus关键词: | Doppler radar
; Imaging techniques
; Measurements
; Radar imaging
; Radar measurement
; Radar systems
; FMCW radar systems
; High resolution radar
; Measurement system
; Phased array radars
; Point measurement
; Range resolution
; Snow avalanche
; Spatial resolution
; Avalanches (snowslides)
; cloud water
; data acquisition
; measurement method
; radar imagery
; snow avalanche
; spatial resolution
; tracking
; velocity profile
; Sionne Valley
; Switzerland
; Valais
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| 英文摘要: | Two snow avalanches that occurred in the winter 2010-2011 at Vallée de la Sionne, Switzerland, are studied using a new phased array FMCW radar system with unprecedented spatial resolution. The 5.3 GHz radar penetrates through the powder cloud and reflects off the underlying denser core. Data are recorded at 50 Hz and have a range resolution better than 1 m over the entire avalanche track. We are able to demonstrate good agreement between the radar results and existing measurement systems that record at particular points on the avalanche track. The radar data reveal a wealth of structure in the avalanche and allow the tracking of individual fronts and surges down the slope for the first time. Key Points Validation between our radar results and existing point measurement systems High-resolution radar allows tracking of fronts and surges from start to finish Velocity linked with topography may be used to measure rheology of snow ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878185123&doi=10.1002%2fgrl.50134&partnerID=40&md5=c6fe7de735a71e156c752d0f65ade63a
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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/6563
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United Kingdom
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| Recommended Citation: | |
Vriend N.M.,McElwaine J.N.,Sovilla B.,et al. High-resolution radar measurements of snow avalanches[J]. Geophysical Research Letters,2013-01-01,40(4).
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