Bedload transport measurements with impact plate geophones : comparison of sensor calibration in different gravel-bed streams

Auteur(s) et Affiliation(s)

RICKENMANN, D.

Swiss Federal Research Inst. (WSI), Mountain Hydrology and Mass Movements, Birmensdorf, Suisse

TUROWSKI, J.M.

Swiss Federal Research Inst. (WSI), Mountain Hydrology and Mass Movements, Birmensdorf, Suisse

Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Allemagne

FRITSCHI, B.

Swiss Federal Research Inst. (WSI), Mountain Hydrology and Mass Movements, Birmensdorf, Suisse

WYSS, C.

Swiss Federal Research Inst. (WSI), Mountain Hydrology and Mass Movements, Birmensdorf, Suisse

LARONNE, J.

Geography and Environmental Development, Ben-Gurion Univ. of the Negev, Beer Sheva, Israel

BARZILAI, R.

Geography and Environmental Development, Ben-Gurion Univ. of the Negev, Beer Sheva, Israel

REID, I.

Dept. of Geography, Loughborough University, Loughborough, Royaume-Uni

KREISLER, A.

Inst. of Water Management, Hydrology and Hydraulic Engineering, Univ. of Natural Resources and life Sciences, Vienna, Autriche

AIGNER, J.

Inst. of Water Management, Hydrology and Hydraulic Engineering, Univ. of Natural Resources and life Sciences, Vienna, Autriche

SEITZ, H.

Inst. of Water Management, Hydrology and Hydraulic Engineering, Univ. of Natural Resources and life Sciences, Vienna, Autriche

HABERSACK, H.

Inst. of Water Management, Hydrology and Hydraulic Engineering, Univ. of Natural Resources and life Sciences, Vienna, Autriche

Description :
Indirect bedload transport measurements have been made with the Swiss plate geophone system in 5 gravel-bed mountain streams. At the Erlenbach in Switzerland, a moving-basket sampler was used. At the Fischbach and Ruetz streams in Austria, a Helley–Smith type bedload sampler provided the calibration measurements. A Bunte-type bedload trap was used at the Rofenache stream in Austria. At the Nahal Eshtemoa in Israel, Reid-type slot bedload samplers were used. To characterize the response of the geophone signal to bedload particles impacting on the plate, geophone summary values were calculated from the raw signal and stored at one second intervals. By comparing the calibration measurements from the different field sites and utilizing insights gained during preliminary flume experiments, it has been possible to identify the main factors that are responsible for site specific differences in the calibration coefficient. This analysis indicates that the geophone signal also contains some information about the grain size distribution of bedload.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2014, vol. 39, n°. 7, p. 928-942, nombre de pages : 15, Références bibliographiques : 2 p.

Date :
2014

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais