High-water Level River Discharge Measurement Method in Japan
High-water Level River Discharge Measurement Method in Japan
High-water Level River Discharge Measurement Method in Japan
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Non-Contact Surface Velocity<br />
<strong>Measurement</strong><br />
Characteristic<br />
1. Measure river surface velocity (estimate cross-sectional<br />
total discharge by summ<strong>in</strong>g up each of the cross-sectional areas.<br />
Vertically averaged velocity is calculated us<strong>in</strong>g a conversion factor )<br />
2. 4 types of Non-Contact Surface current meter<br />
were developed(The PWRI and other six private<br />
companies developed them for four years. The current<br />
meters are attached on bridge or bank of river,<br />
and we can observe automatically even from a<br />
remote office.
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