Comparison of avalanche-velocity measurements by means of pulsed Doppler radar, continuous wave radar and optical methods
Comparison of avalanche-velocity measurements by means of pulsed Doppler radar, continuous wave radar and optical methods
复制标题
脉冲多普勒雷达、连续波雷达和光学方法测量雪崩速度的比较
DOI：
10.1016/j.coldregions.2007.03.014
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发表时间：
2007
影响因子：
4.1
通讯作者：
F. Tiefenbacher
中科院分区：
文献类型：
--
作者：
L. Rammer;M. Kern;U. Gruber;F. Tiefenbacher
混合密流/粉雪雪崩的速度已经通过脉冲多普勒雷达和连续波雷达在全尺寸雪崩试验场Vallée de la Sionne进行了测量。从雷达数据，我们得出的速度的跃变层和雪崩的粉末部分。通过两种不同的雷达测量技术所获得的结果进行了比较，并检查对光电速度传感器安装在不同的高度上的20米高的桅杆在雪崩的轨道和对视频测量速度数据所获得的速度数据。我们证明，测量是一致的，并讨论如何从测量的雪崩结构的信息。
Velocities of mixed dense-flow/powder-snow avalanches have been measured by means of pulsed Doppler radar and by continuous wave radar at the full scale avalanche test site Vallée de la Sionne. From the radar data, we derive velocities of the saltation layer and of the powder part of the avalanche. The results obtained by the two different radar measurement techniques are compared and also are checked against the velocity data obtained by opto-electronic velocity sensors installed at different heights on the 20 m high mast in the avalanche track and against videogrammetry velocity data. We demonstrate that the measurements are consistent and discuss how information about the avalanche structure can be derived from the measurements.