Field and flume measurements with the impact plate: Effect of bedload grain‐size distribution on signal response
Field and flume measurements with the impact plate: Effect of bedload grain‐size distribution on signal response
复制标题
使用冲击板进行现场和水槽测量:底土颗粒尺寸分布对信号响应的影响
DOI:
10.1002/esp.5117
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发表时间:
2021
影响因子:
3.3
通讯作者:
Hartlieb
中科院分区:
文献类型:
--
作者:
Nicollier;Rickenmann;Hartlieb
The Swiss plate geophone is a bedload surrogate monitoring system that has been calibrated in several gravel‐bed streams using direct sampling techniques. Past systematic flume experiments have highlighted the dependency of the signal response on the bed roughness and the flow velocity. To further develop the existing calibration approaches and better understand the role of site‐specific factors, we conducted calibration measurements of the Swiss plate geophone system in two gravel‐bed streams in the Swiss Alps with a crane‐mounted net sampler. In parallel, we performed full‐scale controlled flume experiments at an outdoor flume facility, where we reproduced the channel characteristics and the transport conditions observed at each field site. We evaluated changes in signal response using relations between the transported bedload mass and the number of detected impulses or packets (representing a single particle impact). Using experiments with single grain sizes, we confirmed that increasing flow velocity reduces the signal response. Additionally, we performed mixed‐grain‐size experiments and found that the grain‐size distribution of the transported bedload can influence the signal response of the Swiss plate geophone system over more than one order of magnitude and lead to a biased estimation of the bedload flux. We show that the effect of the grain‐size distribution on the signal response is visible at multiple field sites and discuss possible explanations for this phenomenon.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
D. Rickenmann;B. Fritschi
通讯作者:
B. Fritschi
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
D. Rickenmann;J. Turowski;B. Fritschi;C. Wyss;J. Laronne;Ronel Barzilai;I. Reid;Andrea Kreisler;J. Aigner;H. Seitz;H. Habersack
通讯作者:
H. Habersack
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
C. Wyss;D. Rickenmann;B. Fritschi;J. Turowski;V. Weitbrecht;R. Boes
通讯作者:
R. Boes
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
D. Rickenmann;Gilles Antoniazza;C. Wyss;B. Fritschi;S. Boss
通讯作者:
S. Boss
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
J. Barrière;A. Krein;A. Oth;Reimar Schenkluhn
通讯作者:
Reimar Schenkluhn