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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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| URI | http://purl.tuc.gr/dl/dias/6BD23842-6181-499C-9770-BD71FDFA96EF | - |
| Identifier | https://doi.org/10.2166/hydro.2013.197 | - |
| Language | en | - |
| Title | Assessment of GeoEye-1 stereo-pair-generated DEM in flood mapping of an ungauged basin | en |
| Creator | Tsanis Giannis | en |
| Creator | Τσανης Γιαννης | el |
| Creator | Seiradakis K.D. | en |
| Creator | Daliakopoulos Ioannis | en |
| Creator | Δαλιακοπουλος Ιωαννης | el |
| Creator | Gryllakis Emmanouil | en |
| Creator | Γρυλλακης Εμμανουηλ | el |
| Creator | Koutroulis Aristeidis | en |
| Creator | Κουτρουλης Αριστειδης | el |
| Publisher | IWA Publishing | en |
| Content Summary | A very high resolution (VHR) digital elevation model (DEM) is produced from a GeoEye-1 0.5-m-resolution satellite stereo pair and is used for floodplain management and mapping applications such as watershed delineation and river cross-section extraction. For this purpose, a 2 m × 2 m resolution terrain surface is produced from the stereo pair by using the Leica Photogrammetry Suite (LPS) enhanced Automatic Terrain Extraction (eATE) algorithm. DEM accuracy is assessed by comparison with measured individual ground control points (GCPs), stream cross-sections and other landscape features. Results show that the produced DEM is in good agreement with ground truth and superior to products of lower resolution such as 90 m NASA Shuttle Radar Topography Mission (SRTM) and 1:5,000 topographical maps. One- and two-dimensional hydraulic models are used to simulate rainfall–runoff characteristics and flood wave kinematics of the flash flood event of 17 October 2006 that occurred in the ungauged basin of Almirida, using the 2 m VHR-DEM as an input. Results show that the hydraulic simulation based on the generated VHR-DEM, calibrated and validated via field data, produces an accurate extent and water level of the flooded area. Remote sensing stereo reconstruction is a promising alternative to traditional survey methods in flood mapping applications. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-11-09 | - |
| Date of Publication | 2013 | - |
| Subject | DEMs (Digital elevation models) | en |
| Subject | Digital surface models | en |
| Subject | Digital terrain models | en |
| Subject | DSMs (Digital surface models) | en |
| Subject | DTMs (Digital terrain models) | en |
| Subject | Elevation models, Digital | en |
| Subject | Surface models, Digital | en |
| Subject | Terrain models, Digital | en |
| Subject | digital elevation models | en |
| Subject | dems digital elevation models | en |
| Subject | digital surface models | en |
| Subject | digital terrain models | en |
| Subject | dsms digital surface models | en |
| Subject | dtms digital terrain models | en |
| Subject | elevation models digital | en |
| Subject | surface models digital | en |
| Subject | terrain models digital | en |
| Bibliographic Citation | I. K. Tsanis, K. D. Seiradakis, I. N. Daliakopoulos, M. G. Grillakis and A. G. Koutroulis, "Assessment of GeoEye-1 stereo-pair-generated DEM in flood mapping of an ungauged basin", 2013. doi: 10.2166/hydro.2013.197 | en |
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