IAHR Document Library

« Back to Library Homepage « Proceedings of the 2nd International Symposium and Exhibitio...

Experimental Methods: Real-Time Monitoring of a Wadi Flash Flood in an Arid Area Using LSPIV and STIV

Author(s): Mahmood M. Al-Mamari, Sameh A. Kantoush, Sohei Kobayashi and Tetsuya Sumi

Linked Author(s):

Keywords: discharge rate; wadi flash flood; LSPIV; STIV; surface flow velocity


A wadi is a dry riverbed, which large volumes of water are discharged to either the sea or desert areas after heavy rainfall. Recently, wadi flash floods have frequently occurred in an arid region, causing damage of roads, houses, and properties. Therefore, the accurate monitoring and quantification of wadi discharge rates plays an important role in the installation of mitigation structures and early warning systems. This paper utilized a network of cameras that was recently installed along Wadi Samail in Oman to measure real-time flow velocities of flash flood using image-based techniques, such as largescale particle image velocimetry (LSPIV) and space–time image velocimetry (STIV). Both techniques are suitable for measuring flow velocities along the wadi channel, even in the case of high sediment loads. LSPIV and STIV are extensions of a quantitative imaging technique that is employed to measure water surface velocities using simple and inexpensive equipment. The preliminary calibration of image-based techniques and tools is used in some recorded videos of wadi flash floods to examine the efficiency of these tools in the arid region. 


Year: 2019

Copyright © 2024 International Association for Hydro-Environment Engineering and Research. All rights reserved. | Terms and Conditions