INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5016/geociencias.v41i02.15900 http://hdl.handle.net/11449/246079 |
Resumo: | The present study aimed to analyze the effects of soil cover in Permanent Preservation Areas (PPAs) downstream of the HPP Pedra Furada Dam, in Sirinhaem river in Brazil (Ribeirão-PE), in the occurrence of flows for return periods of 10 and 10,000 years. Field survey data such as orthophotos, topography and bathymetric information were used provided by the company that owns the dam, also public hydrological data from the National Water Agency (Agência Nacional de Águas-ANA). Through the simulation of the two-dimensional hydrodynamic model with the software HEC-RAS 5.0.7, in transient regime, the roughness coefficients (Manning) of the margins of Sirinhaém River were varied, making analyzes in distant sections 5, 15 and 25 km from the dam. The results showed that the occupation of these PPAs by native/tree vegetation increased the roughness coefficient. At best, it provided an 8-fold increase of this coefficient, reducing the time of arrival of the wave in 2h50 min for the scenario of 10-year flood and in 2h10min for the scenario of 10,000-year flood in the most distant section of the dam. For the nearest section, this increase in Manning’s value led to an increase in water depth of, approximately, 2 meters inside the river channel, for both flow scenarios. Therefore, it is concluded that well-vegetated PPAs reduce the height of the water depth over flood plains closer to the dam, in addition to delaying the wave's arrival in more distant points, contributing to the implementation of contingency in case of emergency. |
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INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZILINFLUÊNCIA DA COBERTURA DO SOLO EM ÁREAS DE PRESERVAÇÃO PERMANENTE SOBRE EVENTOS DE INUNDAÇÕES A JUSANTE DE UMA BARRAGEM: ESTUDO DE CASO DA PCH PEDRA FURADA – PERNAMBUCO, BRASILDamsFloodHEC-RASLand CoverManning roughness coefficientThe present study aimed to analyze the effects of soil cover in Permanent Preservation Areas (PPAs) downstream of the HPP Pedra Furada Dam, in Sirinhaem river in Brazil (Ribeirão-PE), in the occurrence of flows for return periods of 10 and 10,000 years. Field survey data such as orthophotos, topography and bathymetric information were used provided by the company that owns the dam, also public hydrological data from the National Water Agency (Agência Nacional de Águas-ANA). Through the simulation of the two-dimensional hydrodynamic model with the software HEC-RAS 5.0.7, in transient regime, the roughness coefficients (Manning) of the margins of Sirinhaém River were varied, making analyzes in distant sections 5, 15 and 25 km from the dam. The results showed that the occupation of these PPAs by native/tree vegetation increased the roughness coefficient. At best, it provided an 8-fold increase of this coefficient, reducing the time of arrival of the wave in 2h50 min for the scenario of 10-year flood and in 2h10min for the scenario of 10,000-year flood in the most distant section of the dam. For the nearest section, this increase in Manning’s value led to an increase in water depth of, approximately, 2 meters inside the river channel, for both flow scenarios. Therefore, it is concluded that well-vegetated PPAs reduce the height of the water depth over flood plains closer to the dam, in addition to delaying the wave's arrival in more distant points, contributing to the implementation of contingency in case of emergency.Universidade Estadual Paulista (UNESP) Faculdade de Engenharia de Ilha Solteira, Campus de Ilha Solteira. Alameda Bahia, 550, SPUniversidade Estadual Paulista (UNESP) Faculdade de Engenharia de Ilha Solteira, Campus de Ilha Solteira. Alameda Bahia, 550, SPUniversidade Estadual Paulista (UNESP)Pereira, Ludmilla Freitas [UNESP]Lima, César Gustavo da Rocha [UNESP]Tashima, Mauro Mitsucchi [UNESP]2023-07-29T12:31:11Z2023-07-29T12:31:11Z2022-10-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article479-496http://dx.doi.org/10.5016/geociencias.v41i02.15900Geociencias, v. 41, n. 2, p. 479-496, 2022.1980-900X0101-9082http://hdl.handle.net/11449/24607910.5016/geociencias.v41i02.159002-s2.0-85139908798Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporGeocienciasinfo:eu-repo/semantics/openAccess2023-07-29T12:31:11Zoai:repositorio.unesp.br:11449/246079Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T12:31:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL INFLUÊNCIA DA COBERTURA DO SOLO EM ÁREAS DE PRESERVAÇÃO PERMANENTE SOBRE EVENTOS DE INUNDAÇÕES A JUSANTE DE UMA BARRAGEM: ESTUDO DE CASO DA PCH PEDRA FURADA – PERNAMBUCO, BRASIL |
title |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
spellingShingle |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL Pereira, Ludmilla Freitas [UNESP] Dams Flood HEC-RAS Land Cover Manning roughness coefficient |
title_short |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
title_full |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
title_fullStr |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
title_full_unstemmed |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
title_sort |
INFLUENCE OF LAND COVER IN PERMANENT PRESERVATION AREAS ON FLOOD EVENTS DOWNSTREAM OF A DAM: PEDRA FURADA HPP CASE STUDY – PERNAMBUCO, BRAZIL |
author |
Pereira, Ludmilla Freitas [UNESP] |
author_facet |
Pereira, Ludmilla Freitas [UNESP] Lima, César Gustavo da Rocha [UNESP] Tashima, Mauro Mitsucchi [UNESP] |
author_role |
author |
author2 |
Lima, César Gustavo da Rocha [UNESP] Tashima, Mauro Mitsucchi [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Pereira, Ludmilla Freitas [UNESP] Lima, César Gustavo da Rocha [UNESP] Tashima, Mauro Mitsucchi [UNESP] |
dc.subject.por.fl_str_mv |
Dams Flood HEC-RAS Land Cover Manning roughness coefficient |
topic |
Dams Flood HEC-RAS Land Cover Manning roughness coefficient |
description |
The present study aimed to analyze the effects of soil cover in Permanent Preservation Areas (PPAs) downstream of the HPP Pedra Furada Dam, in Sirinhaem river in Brazil (Ribeirão-PE), in the occurrence of flows for return periods of 10 and 10,000 years. Field survey data such as orthophotos, topography and bathymetric information were used provided by the company that owns the dam, also public hydrological data from the National Water Agency (Agência Nacional de Águas-ANA). Through the simulation of the two-dimensional hydrodynamic model with the software HEC-RAS 5.0.7, in transient regime, the roughness coefficients (Manning) of the margins of Sirinhaém River were varied, making analyzes in distant sections 5, 15 and 25 km from the dam. The results showed that the occupation of these PPAs by native/tree vegetation increased the roughness coefficient. At best, it provided an 8-fold increase of this coefficient, reducing the time of arrival of the wave in 2h50 min for the scenario of 10-year flood and in 2h10min for the scenario of 10,000-year flood in the most distant section of the dam. For the nearest section, this increase in Manning’s value led to an increase in water depth of, approximately, 2 meters inside the river channel, for both flow scenarios. Therefore, it is concluded that well-vegetated PPAs reduce the height of the water depth over flood plains closer to the dam, in addition to delaying the wave's arrival in more distant points, contributing to the implementation of contingency in case of emergency. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-18 2023-07-29T12:31:11Z 2023-07-29T12:31:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5016/geociencias.v41i02.15900 Geociencias, v. 41, n. 2, p. 479-496, 2022. 1980-900X 0101-9082 http://hdl.handle.net/11449/246079 10.5016/geociencias.v41i02.15900 2-s2.0-85139908798 |
url |
http://dx.doi.org/10.5016/geociencias.v41i02.15900 http://hdl.handle.net/11449/246079 |
identifier_str_mv |
Geociencias, v. 41, n. 2, p. 479-496, 2022. 1980-900X 0101-9082 10.5016/geociencias.v41i02.15900 2-s2.0-85139908798 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Geociencias |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
479-496 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803046438338297856 |