NDLI: Yangtze River ADCP discharge measurement using multiple external sensor inputs

Content Provider	IEEE Xplore Digital Library
Author	Marsden, R. Hening Huang Wei Jinchun Liu Shaohua Huang Shuangxi Ye Dexu Li Ping Hu Yanpeng
Copyright Year	2003
Description	Author affiliation: RD Instrum., San Diego, CA, USA (Marsden, R.; Hening Huang)
Abstract	During high flow season, the sediment load of the Yangtze River can reach 20 grams per liter. When the sediment load is high, acoustic absorption and scattering interfere with the bottom tracking of ADCPs used to measure discharge on the Yangtze River. In addition, the Changjiang Water Resources Commission (CWRC) uses 30 meter steel hulled vessels to perform discharge measurements on much of the Yangtze River. The steel hull of the vessel prevents using the ADCP's internal flux-gate compass as a heading reference. We performed tests to determine if accurate discharge measurements could be performed using an ADCP to measure water velocity, a depth sounder for water depth, DGPS to determine vessel speed over ground, and a gyrocompass to provide heading information. The tests were performed during normal flow conditions when the ADCP bottom tracking is reliable. Using four different ADCPs with the three other external devices, we measured discharge at the CWRC Three Gorges Huangling Temple Hydrology Station. Discharge computed using the external depth sounder, DGPS, and gyrocompass was found to be within 2% of the discharge computed using the ADCP alone. The results of those tests are presented in this paper.
Sponsorship	Current Meas. Technol. Committee of the Oceanic Eng. Soc. IEEE
Starting Page	27
Ending Page	29
File Size	218210
Page Count	3
File Format	PDF
ISBN	078037813X
DOI	10.1109/CCM.2003.1194277
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rivers Performance evaluation Acoustic measurements Sediments Steel Velocity measurement Global Positioning System Testing Acoustic sensors Absorption
Content Type	Text
Resource Type	Article

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