Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | RBRH (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100234 |
Resumo: | ABSTRACT Generally, the base for any flood mapping is the topography information whose resolution determines the map accuracy. Furthermore, river bathymetry in detail and the type of used model are also relevant. Therefore, the objective of the present study was to evaluate the influence of different sources of topographic data on the flood mapping by using the CAESAR-Lisflood model and three Digital Elevation Model (DEM) configurations, among which two were freely available, and the other was generated with field survey (topography and bathymetry). First, the resolution and precision of each DEM were evaluated, from the comparison of different cross-sections, besides the variation of the wetted area and absolute value of the relative error in mean velocity as a function of depth. Subsequently, after elaborating flood maps with each DEM, the results were compared in terms of flood area, mean flood width and flow depth. It is observed that the more accurate resolution, the smaller the flood area becomes. The flood map elaborated with the DEM through field survey had the best fit to the observed area. However the relation between the topographic resolutions and flow-depths was not clear in obtained results. |
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Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern BrazilTopographical sourcesDEMCAESAR-LisfloodFloodMappingABSTRACT Generally, the base for any flood mapping is the topography information whose resolution determines the map accuracy. Furthermore, river bathymetry in detail and the type of used model are also relevant. Therefore, the objective of the present study was to evaluate the influence of different sources of topographic data on the flood mapping by using the CAESAR-Lisflood model and three Digital Elevation Model (DEM) configurations, among which two were freely available, and the other was generated with field survey (topography and bathymetry). First, the resolution and precision of each DEM were evaluated, from the comparison of different cross-sections, besides the variation of the wetted area and absolute value of the relative error in mean velocity as a function of depth. Subsequently, after elaborating flood maps with each DEM, the results were compared in terms of flood area, mean flood width and flow depth. It is observed that the more accurate resolution, the smaller the flood area becomes. The flood map elaborated with the DEM through field survey had the best fit to the observed area. However the relation between the topographic resolutions and flow-depths was not clear in obtained results.Associação Brasileira de Recursos Hídricos2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100234RBRH v.25 2020reponame:RBRH (Online)instname:Associação Brasileira de Recursos Hídricos (ABRH)instacron:ABRH10.1590/2318-0331.252020190108info:eu-repo/semantics/openAccessZambrano,Fernando CampoKobiyama,MasatoPereira,Marco Alésio FigueiredoMichel,Gean PauloFan,Fernando Mainardieng2020-09-10T00:00:00Zoai:scielo:S2318-03312020000100234Revistahttps://www.scielo.br/j/rbrh/https://old.scielo.br/oai/scielo-oai.php||rbrh@abrh.org.br2318-03311414-381Xopendoar:2020-09-10T00:00RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)false |
dc.title.none.fl_str_mv |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
title |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
spellingShingle |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil Zambrano,Fernando Campo Topographical sources DEM CAESAR-Lisflood Flood Mapping |
title_short |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
title_full |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
title_fullStr |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
title_full_unstemmed |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
title_sort |
Influence of different sources of topographic data on flood mapping: urban area São Vendelino municipality, southern Brazil |
author |
Zambrano,Fernando Campo |
author_facet |
Zambrano,Fernando Campo Kobiyama,Masato Pereira,Marco Alésio Figueiredo Michel,Gean Paulo Fan,Fernando Mainardi |
author_role |
author |
author2 |
Kobiyama,Masato Pereira,Marco Alésio Figueiredo Michel,Gean Paulo Fan,Fernando Mainardi |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Zambrano,Fernando Campo Kobiyama,Masato Pereira,Marco Alésio Figueiredo Michel,Gean Paulo Fan,Fernando Mainardi |
dc.subject.por.fl_str_mv |
Topographical sources DEM CAESAR-Lisflood Flood Mapping |
topic |
Topographical sources DEM CAESAR-Lisflood Flood Mapping |
description |
ABSTRACT Generally, the base for any flood mapping is the topography information whose resolution determines the map accuracy. Furthermore, river bathymetry in detail and the type of used model are also relevant. Therefore, the objective of the present study was to evaluate the influence of different sources of topographic data on the flood mapping by using the CAESAR-Lisflood model and three Digital Elevation Model (DEM) configurations, among which two were freely available, and the other was generated with field survey (topography and bathymetry). First, the resolution and precision of each DEM were evaluated, from the comparison of different cross-sections, besides the variation of the wetted area and absolute value of the relative error in mean velocity as a function of depth. Subsequently, after elaborating flood maps with each DEM, the results were compared in terms of flood area, mean flood width and flow depth. It is observed that the more accurate resolution, the smaller the flood area becomes. The flood map elaborated with the DEM through field survey had the best fit to the observed area. However the relation between the topographic resolutions and flow-depths was not clear in obtained results. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100234 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100234 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2318-0331.252020190108 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
dc.source.none.fl_str_mv |
RBRH v.25 2020 reponame:RBRH (Online) instname:Associação Brasileira de Recursos Hídricos (ABRH) instacron:ABRH |
instname_str |
Associação Brasileira de Recursos Hídricos (ABRH) |
instacron_str |
ABRH |
institution |
ABRH |
reponame_str |
RBRH (Online) |
collection |
RBRH (Online) |
repository.name.fl_str_mv |
RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH) |
repository.mail.fl_str_mv |
||rbrh@abrh.org.br |
_version_ |
1754734701990379520 |