DOI: 10.5194/hess-23-1045-2019
论文题名: Citizen science flow-an assessment of simple streamflow measurement methods
作者: Davids J.C. ; Rutten M.M. ; Pandey A. ; Devkota N. ; David Van Oyen W. ; Prajapati R. ; Van De Giesen N.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 2 起始页码: 1045
结束页码: 1065
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Catchments
; Dilution
; Errors
; Information management
; Landforms
; Runoff
; Stream flow
; Water management
; Acoustic Doppler velocimeter
; Computing error
; Headwater catchment
; Hydrologic data
; Hydrological data
; Information contents
; Reference measurements
; Streamflow measurements
; Uncertainty analysis
; error analysis
; flow measurement
; flow velocity
; headwater
; monsoon
; participatory approach
; river flow
; river water
; salinity
; streamflow
; water management
; Kathmandu Valley
; Nepal
英文摘要: Wise management of water resources requires data. Nevertheless, the amount of streamflow data being collected globally continues to decline. Generating hydrologic data together with citizen scientists can help fill this growing hydrological data gap. Our aim herein was to (1) perform an initial evaluation of three simple streamflow measurement methods (i.e., float, salt dilution, and Bernoulli run-up), (2) evaluate the same three methods with citizen scientists, and (3) apply the preferred method at more sites with more people. For computing errors, we used midsection measurements from an acoustic Doppler velocimeter as reference flows. First, we (authors) performed 20 evaluation measurements in headwater catchments of the Kathmandu Valley, Nepal. Reference flows ranged from 6.4 to 240 L s -1 . Absolute errors averaged 23 %, 15 %, and 37 % with average biases of 8 %, 6 %, and 26 % for float, salt dilution, and Bernoulli methods, respectively. Second, we evaluated the same three methods at 15 sites in two watersheds within the Kathmandu Valley with 10 groups of citizen scientists (three to four members each) and one "expert" group (authors). At each site, each group performed three simple methods; experts also performed SonTek FlowTracker midsection reference measurements (ranging from 4.2 to 896 L s -1 ). For float, salt dilution, and Bernoulli methods, absolute errors averaged 41 %, 21 %, and 43 % for experts and 63 %, 28 %, and 131 % for citizen scientists, while biases averaged 41 %, 19 %, and 40 % for experts and 52 %, 7 %, and 127 % for citizen scientists, respectively. Based on these results, we selected salt dilution as the preferred method. Finally, we performed larger-scale pilot testing in week-long pre-and post-monsoon Citizen Science Flow campaigns involving 25 and 37 citizen scientists, respectively. Observed flows (n) were distributed among the 10 headwater catchments of the Kathmandu Valley and ranged from 0.4 to 425 L s-1 and from 1.1 to 1804 L s-1 in pre-and post-monsoon, respectively. Future work should further evaluate uncertainties of citizen science salt dilution measurements, the feasibility of their application to larger regions, and the information content of additional streamflow data. © 2019 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163040
Appears in Collections: 气候变化与战略
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作者单位: Davids, J.C., Water Management Civil Engineering and Geosciences, Delft University of Technology, Building 23, Stevinweg 1, CN, Delft, 2628, Netherlands, SmartPhones4Water, 3881 Benatar Way, Chico, CA 95928, United States; Rutten, M.M., Engineering and Applied Sciences, Rotterdam University, G.J. de Jonghweg 4-6, GG, Rotterdam, 3015, Netherlands; Pandey, A., SmartPhones4Water-Nepal, Damodar Marg, Thusikhel, Lalitpur, 44600, Nepal; Devkota, N., SmartPhones4Water-Nepal, Damodar Marg, Thusikhel, Lalitpur, 44600, Nepal; David Van Oyen, W., Engineering and Applied Sciences, Rotterdam University, G.J. de Jonghweg 4-6, GG, Rotterdam, 3015, Netherlands; Prajapati, R., SmartPhones4Water-Nepal, Damodar Marg, Thusikhel, Lalitpur, 44600, Nepal; Van De Giesen, N., Water Management Civil Engineering and Geosciences, Delft University of Technology, Building 23, Stevinweg 1, CN, Delft, 2628, Netherlands
Recommended Citation:
Davids J.C.,Rutten M.M.,Pandey A.,et al. Citizen science flow-an assessment of simple streamflow measurement methods[J]. Hydrology and Earth System Sciences,2019-01-01,23(2)