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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 375, 5-10, 2017
https://doi.org/10.5194/piahs-375-5-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
03 Mar 2017
Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river
Dieter Rickenmann, Gilles Antoniazza, Carlos R. Wyss, Bruno Fritschi, and Stefan Boss Swiss Federal Research Institute WSL, Birmensdorf, 8903, Switzerland
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 m3 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 m3 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.

Citation: Rickenmann, D., Antoniazza, G., Wyss, C. R., Fritschi, B., and Boss, S.: Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river, Proc. IAHS, 375, 5-10, https://doi.org/10.5194/piahs-375-5-2017, 2017.
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Short summary
Bedload transport measurements were performed with acoustic sensors (geophones and accelerometers) mounted underneath impact plates during summer 2015 in the Albula River in Switzerland. The measurements showed that the signal response in terms of geophone and accelerometer impulses is comparable for both types of sensors and that there is a good correlation between discharge data and impulses recorded by both types of sensors.
Bedload transport measurements were performed with acoustic sensors (geophones and...
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