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タイトル: | Real-Time Measurement of Flash-Flood in a Wadi Area by LSPIV and STIV |
著者: | Al-mamari, Mahmood Kantoush, Sameh https://orcid.org/0000-0003-0919-5097 (unconfirmed) Kobayashi, Sohei Sumi, Tetsuya https://orcid.org/0000-0002-1423-7477 (unconfirmed) Saber, Mohamed |
著者名の別形: | 小林, 草平 角, 哲也 |
キーワード: | discharge wadi flash flood LSPIV STIV real time surface flow velocity |
発行日: | Mar-2019 |
出版者: | MDPI AG |
誌名: | Hydrology |
巻: | 6 |
号: | 1 |
論文番号: | 27 |
抄録: | Flash floods in wadi systems discharge large volumes of water to either the sea or the desert areas after high-intensity rainfall events. Recently, wadi flash floods have frequently occurred in arid regions and caused damage to roads, houses, and properties. Therefore, monitoring and quantifying these events by accurately measuring wadi discharge has become important for the installation of mitigation structures and early warning systems. In this study, image-based methods were used to measure surface flow velocities during a wadi flash flood in 2018 to test the usefulness of large-scale particle image velocimetry (LSPIV) and space–time image velocimetry (STIV) techniques for the estimation of wadi discharge. The results, which indicated the positive performance of the image-based methods, strengthened our hypothesis that the application of LSPIV and STIV techniques is appropriate for the analysis of wadi flash flood velocities. STIV is suitable for unidirectional flow velocity and LSPIV is reliable and stable for two-dimensional measurement along the wadi channel, the direction of flow pattern which varies with time. |
著作権等: | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
URI: | http://hdl.handle.net/2433/243887 |
DOI(出版社版): | 10.3390/hydrology6010027 |
出現コレクション: | 学術雑誌掲載論文等 |
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