High-resolution radar measurements of snow avalanches
High-resolution radar measurements of snow avalanches
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DOI：
10.1002/grl.50134
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发表时间：
2013-02-28
影响因子：
5.2
通讯作者：
Brennan, P. V.
中科院分区：
文献类型：
--
作者：
Vriend, N. M.;McElwaine, J. N.;Brennan, P. V.
2010-2011年冬季在瑞士Vallee de la Sionne发生的两次雪崩，使用具有前所未有的空间分辨率的新型相控阵FMCW雷达系统进行了研究。5.3 GHz的雷达穿透粉末云，并反射了底层密度更大的核心。数据记录在50赫兹，并有一个范围分辨率优于1米，在整个雪崩轨迹。我们能够证明雷达结果和现有的测量系统，记录在雪崩轨迹上的特定点之间的良好协议。雷达数据揭示了雪崩中丰富的结构，并首次允许跟踪单个锋面和斜坡上的浪涌。引用：Vriend，N. M.，J. N.麦克尔韦恩，B。索维拉角J. Keylock，M. Ash和P. V. Brennan（2013），雪雪崩的高分辨率雷达测量，地球物理学。保留信函：40，727-731，doi：10.1002/grl.50134。
Two snow avalanches that occurred in the winter 2010-2011 at Vallee 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. Citation: Vriend, N. M., J. N. McElwaine, B. Sovilla, C. J. Keylock, M. Ash, and P. V. Brennan (2013), High-resolution radar measurements of snow avalanches, Geophys. Res. Lett., 40, 727-731, doi:10.1002/grl.50134.