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Assessment of GeoEye-1 stereo-pair-generated DEM in flood mapping of an ungauged basin

Tsanis Giannis, Seiradakis K.D. , Daliakopoulos Ioannis, Gryllakis Emmanouil, Koutroulis Aristeidis

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URIhttp://purl.tuc.gr/dl/dias/6BD23842-6181-499C-9770-BD71FDFA96EF-
Identifierhttps://doi.org/10.2166/hydro.2013.197-
Languageen-
TitleAssessment of GeoEye-1 stereo-pair-generated DEM in flood mapping of an ungauged basinen
CreatorTsanis Giannisen
CreatorΤσανης Γιαννηςel
CreatorSeiradakis K.D. en
CreatorDaliakopoulos Ioannisen
CreatorΔαλιακοπουλος Ιωαννηςel
CreatorGryllakis Emmanouilen
CreatorΓρυλλακης Εμμανουηλel
CreatorKoutroulis Aristeidisen
CreatorΚουτρουλης Αριστειδηςel
PublisherIWA Publishingen
Content SummaryA 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 ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-11-09-
Date of Publication2013-
SubjectDEMs (Digital elevation models)en
SubjectDigital surface modelsen
SubjectDigital terrain modelsen
SubjectDSMs (Digital surface models)en
SubjectDTMs (Digital terrain models)en
SubjectElevation models, Digitalen
SubjectSurface models, Digitalen
SubjectTerrain models, Digitalen
Subjectdigital elevation modelsen
Subjectdems digital elevation modelsen
Subjectdigital surface modelsen
Subjectdigital terrain modelsen
Subjectdsms digital surface modelsen
Subjectdtms digital terrain modelsen
Subjectelevation models digitalen
Subjectsurface models digitalen
Subjectterrain models digitalen
Bibliographic CitationI. 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.2013.197en

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