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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m16d.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP7W/3A44QQH
Repositóriosid.inpe.br/mtc-m19/2011/07.13.14.04
Última Atualização2011:10.17.13.14.31 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m19/2011/07.13.14.04.19
Última Atualização dos Metadados2018:06.05.04.24.31 (UTC) administrator
Chave SecundáriaINPE--PRE/
ISSN0100-7912
1983-8700
Chave de CitaçãoSalgadoFormRudo:2011:ReDiEl
TítuloRefinement of the digital elevation model appied to erosion modeling of watersheds
Ano2011
Mêsjun.
Data de Acesso25 abr. 2024
Tipo SecundárioPRE PN
Número de Arquivos1
Tamanho4098 KiB
2. Contextualização
Autor1 Salgado, Moisés Pereira Galvão
2 Formaggio, Antônio Roberto
3 Rudorff, Bernardo Friedrich Theodor
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JGJQ
3 8JMKD3MGP5W/3C9JGKP
Grupo1
2 DSR-OBT-INPE-MCT-BR
3 DSR-OBT-INPE-MCT-BR
Afiliação1
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mailsecretaria.cpa@dir.inpe.br
RevistaGeografia (Rio Claro)
Volume36
NúmeroNúmero Especial
Páginas201-211
Histórico (UTC)2011-10-31 12:46:53 :: secretaria.cpa@dir.inpe.br -> banon :: 2011
2011-11-18 18:21:31 :: banon -> administrator :: 2011
2018-06-05 04:24:31 :: administrator -> marciana :: 2011
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
ResumoRapid soil erosion is a major threat to the sustainability of ecosystems (PIMENTEL et al., 1995, p.1118). The increase in erosion processes across the Alto Taquari sub-basin (BAT) intensified silting up the Taquari river in the Pantanal region, and consequently the inundation of floodplain areas around its lower course. This inundation is considered the most severe impact, both environmentally and socio-economically for the Pantanal (GALDINO; PELLEGRIN, 2003, p.11). Among all sub-basins within the Alto Paraguai watershed (BAP), BAT is one of the regions showing the highest erosion potential (GALDINO et al., 2006, p.113), and also one of the highest rates of sediment production (GALDINO; PELLEGRIN, 2003, p.23). Therefore, a modeling of erosion processes aiming to reduce the amount of sediment is a necessity presented for the conservation plan of BAP, also applied to BAT (GALDINO; PELLEGRIN, 2003, p.26). In the context, erosion modeling allows an evaluation of the erosion potential of natural and human factors, thus supporting the conservation plan of that watershed (BOTELHO, 2009, p.277). The empiric model named Universal Soil Loss Equation (USLE) (WISCHMEIER; SMITH, 1978, p.4) allows the estimation of soil loss caused by hydric erosion in a given area which was originally an agricultural field. This model is described by the equation: A = R x K x L x S x C x P. Where A (t.ha-1.year-1) equals the average amount of soil lost in a given area during a certain period of time; R (MJ.mm.ha- 1. h-1.year-1) is the Rainfall erosivity factor; K (t.h.MJ-1.mm-1) stands for soil erodibility; L x S corresponds to the topographic factor; and C and P are respectively the factors which consider land use and soil conservation practices. Presently with the availability of the Geographic Information Systems (SIG), the USLE model is applied to erosion modeling in large areas, thus allowing to analyze the characteristics of the physical environment from BAT and its natural potential for erosion (GALDINO et al., 2006, p.107). However, the original concept of LS topographic factor does not consider interactions between the runoff of the surface flow, which is the main eroding agent, and the relief forms in the area analyzed, typically a watershed. The topographic factor used in the USLE model considers the influence of slope length (λ) and slope angle (θ) on erosion processes to calculate respectively factors L and S. However the ratio between potential for erosion and slope length is genuinely empirical, lacking a physical foundation and a theoretical basis to justify it (MOORE; BURCH, 1986, p.1294). So the two-dimensional topographic factor (LS2d) differentiated by the substitution of slope length λ with unit contributing area (As), allows to combine the influence of relief forms from a watershed on the superficial runoff flow in the modeling of erosion processes (MOORE; BURCH, 1986, p.1295). Figure 1 illustrates the differences between the topographic variables slope length λ and unit contributing area As as it is used in the calculation of the topographic factor LS, and the two-dimensional topographic factor LS2d, respectively.
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4. Condições de acesso e uso
URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP7W/3A44QQH
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP7W/3A44QQH
Idiomapt
Arquivo Alvorefinement.pdf
Grupo de Usuáriosadministrator
banon
secretaria.cpa@dir.inpe.br
Visibilidadeshown
Política de Arquivamentoallowpublisher allowfinaldraft
Permissão de Leituraallow from all
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhosid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
Lista de Itens Citandosid.inpe.br/mtc-m21/2012/07.13.14.41 1
Acervo Hospedeirosid.inpe.br/mtc-m19@80/2009/08.21.17.02
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi electronicmailaddress format isbn keywords label lineage mark nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url
7. Controle da descrição
e-Mail (login)marciana
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