Signal response of the Swiss plate geophone monitoring system impacted by bedload particles with different transport modes | |
Chen, Zheng1,2,3; He, Siming3; Nicollier, Tobias2; Ammann, Lorenz2; Badoux, Alexandre2; Rickenmann, Dieter2 | |
刊名 | EARTH SURFACE DYNAMICS |
2022-03-31 | |
卷号 | 10期号:2页码:279-300 |
关键词 | 无 |
ISSN号 | 2196-6311 |
DOI | 10.5194/esurf-10-279-2022 |
英文摘要 | Controlled experiments were performed to investigate the acoustic signal response of the Swiss plate geophone (SPG) system impacted by bedload particles varying in size, impact angle, and transport mode. The impacts of bedload particles moving by saltation, rolling, and sliding were determined by analyzing the experimental videos and corresponding vibration signals. The finite element method (FEM) was utilized to construct a numerical model of the SPG system and to simulate the signals triggered by a quartz sphere hitting the plate at impact angles ranging from 0 degrees to 90 degrees. For a particle impact on the bed or on the geophone plates, the signature of the generated signal in terms of maximum amplitude, number of impulses, and centroid frequency was extracted from the raw monitoring data. So-called signal packets were determined by performing a Hilbert transform of the raw signal. The number of packets was calculated for each transport mode and for each particle size class, with sizes ranging from 28.1 to 171.5 mm The results show how the number of signal impulses per particle mass, the amplitude of the signal envelope, and the centroid frequency change with increasing particle size, and they also demonstrate the effect of bedload transport mode on the signal response of the SPG system. We found that there is a general increase in the strength of the signal response or in the centroid frequency when the transport mode changes from sliding to rolling to saltation. The findings of this study help us to better understand the signal responses of the SPG system for different bedload transport modes, and may also contribute to an improvement of the procedure to determine bedload particle size from the SPG signal. |
资助项目 | National Natural Science Foundation of China[41772312] ; National Natural Science Foundation of China[41790433] ; Key Deployment Project of CAS[KFZD-SW-424] ; China Scholarship Council CSC[201904910867] ; Swiss National Science Foundation SNSF[200021L_172606] |
WOS关键词 | BED-LOAD TRANSPORT ; HIGH-SPEED FLOWS ; SEDIMENT TRANSPORT ; MOUNTAIN STREAMS ; ERLENBACH STREAM ; GRAVEL ; CALIBRATION ; SALTATION ; DISCHARGE ; DYNAMICS |
WOS研究方向 | Physical Geography ; Geology |
语种 | 英语 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
WOS记录号 | WOS:000776198500001 |
资助机构 | National Natural Science Foundation of China ; Key Deployment Project of CAS ; China Scholarship Council CSC ; Swiss National Science Foundation SNSF |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/56510] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Chen, Zheng |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Swiss Fed Inst Forest Snow & Landscape Res WSL, CH-8903 Birmensdorf, Switzerland 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Zheng,He, Siming,Nicollier, Tobias,et al. Signal response of the Swiss plate geophone monitoring system impacted by bedload particles with different transport modes[J]. EARTH SURFACE DYNAMICS,2022,10(2):279-300. |
APA | Chen, Zheng,He, Siming,Nicollier, Tobias,Ammann, Lorenz,Badoux, Alexandre,&Rickenmann, Dieter.(2022).Signal response of the Swiss plate geophone monitoring system impacted by bedload particles with different transport modes.EARTH SURFACE DYNAMICS,10(2),279-300. |
MLA | Chen, Zheng,et al."Signal response of the Swiss plate geophone monitoring system impacted by bedload particles with different transport modes".EARTH SURFACE DYNAMICS 10.2(2022):279-300. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论