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http://dx.doi.org/10.11108/kagis.2020.23.2.095

Erosion and Sedimentation Monitoring of Coastal Region using Time Series UAV Image  

CHO, Gi-Sung (Dept. of Civil Engineering, Jeonbuk National University)
HYUN, Jae-Hyeok (Dept. of Civil Engineering, Jeonbuk National University)
LEE, Geun-Sang (Dept. of Cadastre & Civil Engineering, Vision College of Jeonju)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.23, no.2, 2020 , pp. 95-105 More about this Journal
Abstract
In order to promote efficient coastal management, it is important to continuously monitor the characteristics of the terrain, which are changed by various factors. In this study, time series UAV images were taken of Gyeokpo beach. And the standard deviation of ±11cm(X), ±10cm(Y), and ±15cm(Z) was obtained as a result of comparing with the VRS measurement performance for UAV position accuracy evaluation. Therefore, it was confirmed that the tolerance of the digital map work rule was satisfied. In addition, as a result of monitoring the erosion and sedimentation changes using the DSM(digital surface model) constructed through UAV images, an average of 0.01 m deposition occurred between June 2018 and December 2018, and in December 2018 and June 2019. It was analyzed that 0.03m of erosion occurred. Therefore, 0.02m of erosion occurred between June 2018 and June 2019. From the topographical change analysis results, the area of erosion and sediment height was analyzed, and the area of erosion and sedimentation was widely distributed in the ±0.5m section. If we continuously monitor the topographical changes in the coastal regions by using the 3D terrain modeling results using the time series UAV images presented in this study, we can support the coastal management tasks such as supplement or dredging of sand.
Keywords
UAV; Coastal Management; Terrain Monitoring; Geospatial Analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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