dc.creatorSanzana, P.
dc.creatorGironás, J.
dc.creatorBraud, I.
dc.creatorHitschfeld, N.
dc.creatorBranger, F.
dc.creatorRodriguez, F.
dc.creatorFuamba, M.
dc.creatorRomero, J.
dc.creatorVargas, X.
dc.creatorMuñoz, J. F.
dc.creatorVicuña, S.
dc.creatorMejía, A.
dc.date.accessioned2019-10-11T17:29:59Z
dc.date.available2019-10-11T17:29:59Z
dc.date.created2019-10-11T17:29:59Z
dc.date.issued2019
dc.identifierJournal of Hydroinformatics, Volumen 21,
dc.identifier14647141
dc.identifier10.2166/hydro.2018.031
dc.identifierhttps://repositorio.uchile.cl/handle/2250/171218
dc.description.abstract© IWA Publishing 2019.2D non-uniform polygonal meshes allow representation of the impact of landscape elements and small infrastructures on water flows. The initial vectorial mesh, derived from the intersection of several geographical information systems f layers, can have highly non-convex or sliver polygons. These bad-shaped elements compromise accurate numerical flow computation. We propose a flexible divide-and-conquer strategy to decompose polygons into physiographical meaningful parts using shape descriptors to better represent the surface terrain and hydrologic connectivity. We use the convexity index (CI) and the form factor (FF) to consider convex and square like optimum shapes. The strategy was applied to two peri-urban areas whose hydrologic response was simulated using distributed modeling. Good-quality meshes were generated with threshold values of CI.0.8 and FF.0.2, and CI.0.95 and FF.0.4 for undeveloped and highly urbanized zones, respectively. We concluded that the mesh
dc.languageen
dc.publisherIWA Publishing
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
dc.sourceJournal of Hydroinformatics
dc.subjectPeri-urban features
dc.subjectPolygonal decomposition
dc.subjectSpatial uncertainty in hydrological model
dc.subjectTerrain representation
dc.titleDecomposition of 2D polygons and its effect in hydrological models
dc.typeArtículos de revistas


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