On the use of Digital Surface Models and hydrological/hydraulic models for inundated area delineation

Leventi, I; Nalbantis, I; Georgopoulos, A

dc.contributor.author	Leventi, I	en
dc.contributor.author	Nalbantis, I	en
dc.contributor.author	Georgopoulos, A	en
dc.date.accessioned	2014-03-01T02:52:44Z
dc.date.available	2014-03-01T02:52:44Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36023
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84860255412&partnerID=40&md5=d27824350928e939b5a79d04c5e577e9	en
dc.subject.other	Critical issues	en
dc.subject.other	Design flood	en
dc.subject.other	Digital surface models	en
dc.subject.other	Flood hazards	en
dc.subject.other	Flow condition	en
dc.subject.other	Hydrological modelling	en
dc.subject.other	Open channels	en
dc.subject.other	Saint Venant equation	en
dc.subject.other	Unit hydrograph	en
dc.subject.other	Water depth	en
dc.subject.other	Hydraulic models	en
dc.subject.other	Photogrammetry	en
dc.subject.other	Floods	en
dc.title	On the use of Digital Surface Models and hydrological/hydraulic models for inundated area delineation	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	Critical issues are investigated regarding the use of Digital Surface Models (DSMs) in flood hazard modelling and assessment. These concern the necessary methodological steps to exploit DSMs for delineating inundated areas as well as the DSM accuracy required. The methodology proposed is comprised of a typical photogrammetric procedure to produce DSM combined with typical hydrological and hydraulic models. The design flood approach is followed in hydrological modelling using the SCS method coupled with a Unit Hydrograph. Hydraulic quantities such as water depth and velocity are assessed through numerically solving the full one-dimensional Saint-Venant equations for unsteady flow conditions in open channels. Application to Rapentosa basin, Eastern Attica, Greece allows useful conclusions regarding the use of DSMs produced via photogrammetry and the effect of DSM accuracy on inundated area delineation. © 2010 Taylor & Francis Group, London.	en
heal.journalName	Environmental Hydraulics - Proceedings of the 6th International Symposium on Environmental Hydraulics	en
dc.identifier.volume	2	en
dc.identifier.spage	875	en
dc.identifier.epage	880	en