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http://dx.doi.org/10.5322/JESI.2015.24.4.359

Comparative Analysis of Day and Night Time Video Accuracy to Calculate the Flood Runoff Using Surface Image Velocimeter (SIV)  

Kim, Yong-Seok (Department of Civil Engineering, Jeju National University)
Yang, Sung-Kee (Department of Civil Engineering, Jeju National University)
Yu, Kwonkyu (Department of Civil Engineering, Dong-eui University)
Kim, Dong-Su (Department of Civil & Env. Engineering, Dankook University)
Publication Information
Journal of Environmental Science International / v.24, no.4, 2015 , pp. 359-369 More about this Journal
Abstract
This study analyzed the velocimetry of runoff and measured the flood discharge by applying the SIV (Surface Image Velocimetrer) to the daytime and nighttime flow image data with special reference to Seong-eup Bridge at Cheonmi stream of Jeju during the flow by the severe rainstorm on May 27, 2013. A 1000W lighting apparatus with more than 150 lux was installed in order to collect proper nighttime flow image applied to the SIV. Its value was compared and analyzed with the velocity value of the fixed electromagnetic wave surface velocimetry (Kalesto) at the same point to check the accuracy and applicability of the measured velocity of flow. As a result, determination coefficient $R^2$ values were 0.891 and 0.848 respectively in line with the velocity distribution of the daytime and nighttime image and the flow volume measured with Kalesto was approximately 18.2% larger than the value measured with the SIV.
Keywords
Surface Image Velocimetry; CCTV; Kalesto; Doppler radar; Surface velocity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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