Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river
Détails
ID Serval
serval:BIB_67993CB3E1D1
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Etude de cas (case report): rapporte une observation et la commente brièvement.
Collection
Publications
Institution
Titre
Bedload transport monitoring with acoustic sensors in the Swiss Albula mountain river
Périodique
Proceedings of the International Association of Hydrological Sciences
ISSN
2199-899X
Statut éditorial
Publié
Date de publication
03/03/2017
Volume
375
Pages
5-10
Langue
anglais
Résumé
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 000m3 yr1). 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 5m3 s1;
(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.
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 000m3 yr1). 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 5m3 s1;
(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.
Open Access
Oui
Création de la notice
09/03/2017 12:10
Dernière modification de la notice
20/08/2019 15:23
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