Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river
Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river
复制标题
使用声学传感器监测瑞士阿尔布拉山区河流的底泥运输
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Boss
中科院分区：
文献类型：
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作者：
D. Rickenmann;Gilles Antoniazza;C. Wyss;B. Fritschi;S. Boss
抽象。2015年夏季，在瑞士阿尔布拉河采用声学传感器进行了推移质输运测量。使用了一个带有地震检波器和加速度计传感器的冲击板测量系统。该系统提供了河道推移质输运的间接估算。2015年4月，在一个新的永久性测量站安装了30个撞击传感器，以连续监测年泥沙输运率很高（约90000 m3 yr −1）的山区河流的推移质输运。第一年的测量记录表明：（i）两种传感器在地震检波器和加速计脉冲方面的信号响应相当;（ii）两种传感器记录的流量数据和脉冲之间有很好的相关性;（iii）推移质开始时的临界流量约为5 m3 s-1 ;（iv）可以估计地震检波器脉冲的平均校准因子，该平均校准因子处于与利用现场校准测量从其他地点确定的值类似的范围内。
Abstract. Bedload transport measurements with acoustic sensors were obtained during summer 2015 in the Albula River in Switzerland. An impact plate measuring system was used with geophone and accelerometer sensors. This system provides indirect estimations of bedload transport in water courses. In April 2015, 30 impact sensors were installed in a new permanent measuring station to monitor continuously bedload transport in a mountain river with a large annual rate of sediment transport (around 90 000 m 3 yr −1 ). Records of the first year of measurement showed that (i) the signal response in terms of geophone and accelerometer impulses is comparable for both types of sensors; (ii) there is a good correlation between discharge data and impulses recorded by both types of sensors; (iii) the critical discharge at the start of bedload transport is around 5 m 3 s −1 ; (iv) a mean calibration factor for the geophone impulses can be estimated which is in a similar range as values determined from other sites with field calibration measurements.