Using unmanned aerial vehicle and volunteered geographic information to sophisticate urban flood modelling
- 1Slopeland and Hydrological Hazards Division, National Science and Technology Center for Disaster Reduction, New Taipei City, 231, Taiwan
- 2Department of Civil Engineering, National Taiwan University, Taipei, 106, Taiwan
- 3Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, 701, Taiwan
- 1Slopeland and Hydrological Hazards Division, National Science and Technology Center for Disaster Reduction, New Taipei City, 231, Taiwan
- 2Department of Civil Engineering, National Taiwan University, Taipei, 106, Taiwan
- 3Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, 701, Taiwan
Abstract. Sophisticated flood simulation in urban areas is a challenging task due to the difficulties in data acquisition and model verification. This study incorporates three rapid-growing technologies, i.e. volunteered geographic information (VGI), unmanned aerial vehicle (UAV), and computational flood simulation (CFS) to reconstruct the flash flood event occurred in 14 June 2015, GongGuan, Taipei. The high-resolution digital elevation model (DEM) generated by a UAV and the real-time VGI photos acquired from social network are served to establish and validate the CFS model, respectively. The DEM data are resampled based on two grid sizes to evaluate the influence of terrain resolution on flood simulations. The results show that flood scenario can be more accurately modelled as DEM resolution increases with better agreement between simulation and observation in terms of flood occurrence time and water depth. The incorporation of UAV and VGI lower the barrier of sophisticated CFS and shows great potential in flood impact and loss assessment in urban areas.
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Preprint
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Yuan-Fong Su et al.
Interactive discussion


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RC1: 'Review of: Using unmanned aerial vehicle and volunteered geographic information to sophisticate urban flood modelling', Anonymous Referee #1, 27 Mar 2020
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AC1: 'Responses to Anonymous Referee #1', Jiun-Huei Jang, 26 May 2020
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AC1: 'Responses to Anonymous Referee #1', Jiun-Huei Jang, 26 May 2020
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RC2: 'Review', Anonymous Referee #2, 10 Apr 2020
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AC2: 'Responses to Anonymous Referee #2', Jiun-Huei Jang, 26 May 2020
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AC2: 'Responses to Anonymous Referee #2', Jiun-Huei Jang, 26 May 2020
Interactive discussion


-
RC1: 'Review of: Using unmanned aerial vehicle and volunteered geographic information to sophisticate urban flood modelling', Anonymous Referee #1, 27 Mar 2020
-
AC1: 'Responses to Anonymous Referee #1', Jiun-Huei Jang, 26 May 2020
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AC1: 'Responses to Anonymous Referee #1', Jiun-Huei Jang, 26 May 2020
-
RC2: 'Review', Anonymous Referee #2, 10 Apr 2020
-
AC2: 'Responses to Anonymous Referee #2', Jiun-Huei Jang, 26 May 2020
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AC2: 'Responses to Anonymous Referee #2', Jiun-Huei Jang, 26 May 2020
Yuan-Fong Su et al.
Yuan-Fong Su et al.
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