MEASUREMENT OF CROSS-SECTIONAL AVERAGE VELOCITY IN A SHALLOW TIDAL RIVER WITH A NEXT-GENERATION ACOUSTIC VELOCITY METER
The river discharge is an important hydrological quantity on river planning, management, and environment conservation. In order to monitor the discharge in real time, an acoustic velocity meter (AVM) has been developed and deployed at a tidal river. The AVM has breakthroughs as follows: 1) accurate time with GPS clock signals, 2) high signal-to-noise ratio with tenth order M-sequence, 3) thrifty power consumption, reduction in size and weight. The AVM installed at a shallow tidal fiver, where water depth and salinity change significantly, successfully measured the cross-sectional average velocity and discharge in a spring tide. The cross-sectional average velocity and discharge give close agreement with those deduced from an acoustic Doppler current profiler. In addition, the intrusion of saltwater was detected from the sound speed data of the AVM.
cross-sectional average velocity discharge saltwater intrusion tidal fiver
Kiyoshi Kawanishi Arata Kaneko Mahdi Razaz Toru Abe
Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Japan Ministry of Land, Infrastructure, Transport and Tourism, 3-20 Nakaku Hachoubori, Hiroshima, Japan
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1972-1977
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）