About: How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques

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About: How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Raster digital elevation models (DEMs) are a source of data with rapidly increasing quality and availability. A review of hydrologicallyoriented digital terrain analysis (DTA) techniques is provided. Apart from computation of basic terrain attributes, the main tasks are extraction of the automated river network and catchment boundaries. The basic approach is overland flow simulation using the predetermined flow directions from each cell to one or several of its neighbours. Such an approach requires treatment of the problematic parts of DEM, where the flow directions cannot be determined due to the absence of any lower neighbour (i.e. closed depressions and flat areas). Except in the case of two recently developed computer programs (DEMETERR and TAS), the available GIS software does not offer a satisfactory range of usable methods. Further development of programs like ArcGIS or GRASS is therefore necessary to fill this gap. Raster digital elevation models (DEMs) are a source of data with rapidly increasing quality and availability. A review of hydrologicallyoriented digital terrain analysis (DTA) techniques is provided. Apart from computation of basic terrain attributes, the main tasks are extraction of the automated river network and catchment boundaries. The basic approach is overland flow simulation using the predetermined flow directions from each cell to one or several of its neighbours. Such an approach requires treatment of the problematic parts of DEM, where the flow directions cannot be determined due to the absence of any lower neighbour (i.e. closed depressions and flat areas). Except in the case of two recently developed computer programs (DEMETERR and TAS), the available GIS software does not offer a satisfactory range of usable methods. Further development of programs like ArcGIS or GRASS is therefore necessary to fill this gap. (en)
Title	How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques (en)
skos:prefLabel	How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques How to extract river networks and catchment boundaries from DEM: a review of digital terrain analysis techniques (en)
skos:notation	RIV/60460709:41330/09:31458!RIV10-GA0-41330___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA103/07/1620)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Barták, Vojtěch
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká zemědělská univerzita v Praze / Fakulta životního prostředí
http://linked.open...dnocenehoVysledku	317877
http://linked.open...ai/riv/idVysledku	RIV/60460709:41330/09:31458
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Digital terrain analysis, Raster DEMs, Overland flow algorithms, Catchment delineation, River network extraction (en)
http://linked.open.../riv/klicoveSlovo	Catchment delineation Digital terrain analysis Overland flow algorithms Raster DEMs River network extraction
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[29470C29D65C]
http://linked.open...i/riv/nazevZdroje	Journal of Landscape Studies - online version
http://linked.open...in/vavai/riv/obor	DE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Prediction and simulation models in the water resources control
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	2
http://linked.open...iv/tvurceVysledku	Barták, Vojtěch
issn	1802-4416
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	41330

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