Morfologia e aspectos hidrológicos da bacia hidrográfica do rio Preto, divisa dos estados do Rio de Janeiro e de Minas Gerais

Olszevski, Nelci; Filho, Elpídio Inácio Fernandes; Costa, Liovando Marciano da; Schaefer, Carlos Ernesto Gonçalves Reynaud; Souza, Eliana de; Costa, Oldair Vinhas

doi:10.1590/s0100-67622011000300011

Cited by 19 publications

(14 citation statements)

References 4 publications

(3 reference statements)

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“…The mean water level (h b ) was obtained from the annual mean of heavy rainfall (above 70 mm) and 24-hour duration between 1981 and 2014 from the annual data of three rainfall stations in the municipalities of Alfenas, Machado and Paraguaçu, MG (ANA, 2016). The physical characteristics of the subbasin, such as shape, symmetry, sinuosity, channel development, drainage density, width, length and perimeter, were obtained using GIS by geoprocessing according to the specialized literature (OLSZEVSKI et al, 2011;VILLELA;MATTOS, 1975). Table 3.…”

Section: Coefficients For the Calculation Of Soil Losses In The Potenmentioning

confidence: 99%

“…Source: Gavrilovic (1988). development, drainage density, width, length and perimeter, were obtained using GIS by geoprocessing according to the specialized literature (OLSZEVSKI et al, 2011;VILLELA;MATTOS, 1975). The soil losses were determined by the EPM using IntErO software (SPALEVIC, 2011), the distribution of soil losses was determined using GIS in ArcGIS 10.3 (ESRI, 2015), and the raster calculator tool was used to generate the final map of soil losses.…”

Section: Coefficients For the Calculation Of Soil Losses In The Potenmentioning

confidence: 99%

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Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Tavares

Spalević

Avanzi

et al. 2019

SCA

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Soil losses due to water erosion threaten the sustainability of agriculture and the food security of current and future generations. This study estimated potential soil losses and sediment production under different types of land uses in a subbasin in the Municipality of Alfenas, southern Minas Gerais, southeastern Brazil. The objective of this research was to evaluate the application of the Potential Erosion Method by the Intensity of Erosion and Drainage program and correlate the findings with the results obtained by the Revised Universal Soil Loss Equation as well as geoprocessing techniques and statistical analyses. In the Potential Erosion Method, the coefficient indicating the mean erosion intensity was 0.37, which corresponded to erosion category IV and indicated weak laminar erosion processes, and the total soil loss was 649.31 Mg year -1 and the mean was 1.46 Mg ha -1 year -1 . These results were consistent in magnitude with those obtained in the Revised Universal Soil Loss Equation, which estimated a mean soil loss of 1.52 Mg ha -1 year -1 and a total soil loss of 668.26 Mg year -1 . The Potential Erosion Method suggests that 1.5% of the area presents potential soil losses above the soil loss tolerance limit, which ranged from 5.19 to 5.90 Mg ha -1 year -1 , while the Revised Universal Soil Loss Equation indicated that 7.3% of the area has potential soil losses above the limit. The maximum sediment discharge was 60 Mg year -1 , meaning that 9.3% of the total soil loss reached the depositional areas of the river plains or watercourses. The Potential Erosion Method was efficient in the evaluation of water erosion in tropical soils, and the results were consistent with models widely employed in the estimation of soil losses. Thus, the model can support the evaluation of soil losses in Brazil and is a robust tool for evaluating the sustainability of agricultural activities.

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Section: Coefficients For the Calculation Of Soil Losses In The Potenmentioning

confidence: 99%

Section: Coefficients For the Calculation Of Soil Losses In The Potenmentioning

confidence: 99%

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Tavares

Spalević

Avanzi

et al. 2019

SCA

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“…It denotes a greater concentration time and greater water infiltration along the watershed (Olszevski et al, 2011), reinforcing the low propensity to flood.…”

Section: Resultsmentioning

confidence: 99%

Morpho physiographic characterization of the Samambaia creek’s watershed, Goiânia-GO

Pena¹,

Costa²,

Casaroli³

et al. 2015

Científica

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Delimitation of watersheds and its morpho physiographic features are common practices used in hydrologic and environmental analysis. The aim of this paper was to analyze the Samambaia`s watershed and determine its morpho physiographic characteristics and track modifications made on land use throughout the years. Altimetry data was provided by SRTM radar program, compiled in a GIS created to store, process and analyze all the available data. A digital elevation model (DEM) was created from the SRTM image and used to delimitate the watershed. Final analysis of the morpho physiographic characteristics showed that Samambaia's watershed has a low propitious for floods. The region also showed intensification of urban areas when considering the last 25 years (≈20%).Additional keywords: morphometric; physiographic; use and occupation. ResumoA delimitação de uma bacia hidrográfica e sua caracterização morfofisiográfica são procedimentos comumente utilizados em análises hidrológicas e ambientais. O objetivo deste estudo foi determinar as características morfofisiográficas e as alterações no uso e no manejo do solo da bacia do córrego Samambaia, nos últimos 25 anos. As informações de altimetria da região foram extraídas de imagens SRTM, utilizando um software de processamento de dados e SIG, gerando um modelo digital do terreno, utilizado para a delimitação semiautomática da bacia hidrográfica. A análise destas informações determinou que a bacia do Córrego Samambaia possui características que mostram baixa propensão a cheias e inundações, apresentando também uma intensa urbanização ao longo dos últimos 25 anos (≈20%).Palavras-chave adicionais: fisiografia; morfometria; uso e ocupação.

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“…The field survey allowed the determination of landscape development patterns for different lithological units in the catchment, indicating factors that act as controllers in the relation between rainfall and discharge in this mountain region. Olszevski et al (2011) evaluated the morphology and the hydrological aspects by using morphometric characteristics of the terrain and the drainage network in order to predict the hydrological behavior. Lopes (2012) used topographic attributes for trying to establish the relation between topography and discharge in the Altíssimo Rio Negro catchment (PR/SC).…”

Section: Brazilian Scenariomentioning

confidence: 99%

Relevant parameters for characterizing mountain rivers: a review

Paixão

Kobiyama

2019

RBRH

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Mountain rivers are situated in a large portion of the terrestrial surface, especially in headwaters regions, and have been used for various purposes such as recreation, sporting activities, water resources and hydroelectric power generation. However, hydrogeomorphic characteristics of mountain rivers are not fully understood. In this context, the present paper aimed to identify relevant parameters for characterizing rivers in these environments based on bibliographical review. It was identified which parameters have been used and how they have been used to characterize mountain rivers in distinct classifications. The most cited parameters were channel gradient, relation between river width and depth, entrenchment ratio, discharge, sediment transport and grain-size distribution. Also, the current situation related to researches in fluvial geomorphology in mountain rivers in Brazil was evaluated, and the strong need of field survey as basis for the best understanding of mountain fluvial dynamics and characterization was verified.

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Morfologia e aspectos hidrológicos da bacia hidrográfica do rio Preto, divisa dos estados do Rio de Janeiro e de Minas Gerais

Cited by 19 publications

References 4 publications

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Morpho physiographic characterization of the Samambaia creek’s watershed, Goiânia-GO

Relevant parameters for characterizing mountain rivers: a review

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