Quality of flood extents delineated by a non-hydrodynamic GIS tool

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F19%3A00004698" target="_blank" >RIV/00020711:_____/19:00004698 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/19:00108976

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.catena.2018.12.032" target="_blank" >http://dx.doi.org/10.1016/j.catena.2018.12.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.catena.2018.12.032" target="_blank" >10.1016/j.catena.2018.12.032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quality of flood extents delineated by a non-hydrodynamic GIS tool

Popis výsledku v původním jazyce

Delineation of flood extents is an important task in various disciplines. Traditional sophisticated hydrodynamic or alternative non-hydrodynamic approaches can be used depending on the availability and quality of input data and, in particular, the purpose of the delineation. This work focuses on testing the accuracy of flooded areas computed by GIS-based non-hydrodynamic AIZM tool, which is undemanding in terms of input data and technological requirements. The flood delineation is carried out on the basis of flood height at a single point and its spreading along a stream line over a digital elevation model (DEM). In order to assess the tool's performance, flood inundations have been computed along 60 river reaches in the Czech Republic and compared with benchmarks inundations: (1) real flood events that occurred in 1997, 2002 and 2006, as mapped from aerial and satellite imagery and (2) flood hazard maps designed for flood events of 5-, 20- and 100-year return periods. The accuracy of the outputs is examined and interpreted in the context of the river reaches' specificities to identify generally favourable conditions as well as the key limitations of the model. The results outline that under certain conditions, the AIZM tool can be used as a reliable tool for flood extent delineation in data scarce areas (e.g. lacking hydrodynamic constants and channel bathymetry), for reconstruction of past flood events or for preliminary estimation of flooded areas.

Název v anglickém jazyce

Quality of flood extents delineated by a non-hydrodynamic GIS tool

Popis výsledku anglicky

Delineation of flood extents is an important task in various disciplines. Traditional sophisticated hydrodynamic or alternative non-hydrodynamic approaches can be used depending on the availability and quality of input data and, in particular, the purpose of the delineation. This work focuses on testing the accuracy of flooded areas computed by GIS-based non-hydrodynamic AIZM tool, which is undemanding in terms of input data and technological requirements. The flood delineation is carried out on the basis of flood height at a single point and its spreading along a stream line over a digital elevation model (DEM). In order to assess the tool's performance, flood inundations have been computed along 60 river reaches in the Czech Republic and compared with benchmarks inundations: (1) real flood events that occurred in 1997, 2002 and 2006, as mapped from aerial and satellite imagery and (2) flood hazard maps designed for flood events of 5-, 20- and 100-year return periods. The accuracy of the outputs is examined and interpreted in the context of the river reaches' specificities to identify generally favourable conditions as well as the key limitations of the model. The results outline that under certain conditions, the AIZM tool can be used as a reliable tool for flood extent delineation in data scarce areas (e.g. lacking hydrodynamic constants and channel bathymetry), for reconstruction of past flood events or for preliminary estimation of flooded areas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Catena

ISSN

0341-8162

e-ISSN

—

Svazek periodika

175

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

21

Strana od-do

367-387

Kód UT WoS článku

000459358500034

EID výsledku v databázi Scopus

2-s2.0-85059464713