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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F09%3A31458" target="_blank" >RIV/60460709:41330/09:31458 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

<a href="/cs/project/GA103%2F07%2F1620" target="_blank" >GA103/07/1620: Predikční a simulační modely v teorii operativního řízení vodohospodářských soustav</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Landscape Studies - online version

ISSN

1802-4416

e-ISSN

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Svazek periodika

2

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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