Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43127
標題: Application of a portable measuring system with acoustic Doppler current profiler to discharge observations in steep rivers
作者: Lu, J.Y.
盧昭堯
Su, C.C.
Wang, C.Y.
關鍵字: streamflow measurement
acoustic velocimeter
steep river
channel type
flow
期刊/報告no:: Flow Measurement and Instrumentation, Volume 17, Issue 3, Page(s) 179-192.
摘要: Obtaining discharge measurements during high flows is very difficult in steep rivers (slopes greater than about 0.1%) because of the highly unstable free surfaces and bed elevations. In this study, a portable flow measuring system with an acoustic velocimeter was developed. The proposed system has been proved to be better than existing systems for streamflow measurements in steep rivers. Field data collected by conventional velocimeters were analyzed, and compared with the flow measurements using the portable system with an ADP (acoustic Doppler profiler) or ADCP (acoustic Doppler current profiler). The effects of channel patterns on the applicability of the highly efficient discharge estimation method, as proposed by C.L. Chiu [An efficient method of discharge measurement in rivers and streams. In: Lecture of the workshop for development and application of discharge measurement in Taiwan. Taichung (Taiwan): National Chung-Hsing University, 1996. p. 55 [in Chinese]], were also discussed. In general, the method was applicable to higher flows where the measuring verticals were reasonably stable. (c) 2006 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/11455/43127
ISSN: 0955-5986
文章連結: http://dx.doi.org/10.1016/j.flowmeasinst.2006.01.004
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