Mapeamento Geomorfológico do Estado do Paraná

Santos, Leonardo José Cordeiro; Oka-Fiori, Chisato; Canali, Naldy Emerson; Fiori, Angelo; Silveira, Claudinei Taborda da; Silva, Julio Manoel França da; Ross, Jurandyr Luciano Sanches

doi:10.20502/rbg.v7i2.74

Cited by 84 publications

(104 citation statements)

References 5 publications

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“…The middle sector relies on predominant convex slopes, elongated peaks, encased valleys and a lower degree of dissection compared to the upper sector. The lower sector presents convex slopes, flat peaks, open valleys and low-degree dissection, and it is where the Ivaí river floodplain is located (Maack 2002, Santos et al 2006). …”

Section: Study Areamentioning

confidence: 99%

Effect of Digital Elevation Model Mesh Size on Geomorphic Indices: A Case Study of the Ivaí River Watershed - State of Paraná, Brazil

et al. 2017

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Abstract:Geomorphometry is the science of quantitative description of land surface morphology by the mean of geomorphic indices extracted from Digital Elevation Models (DEMs). The analysis of these indices is the first and most common procedure performed in several geoscience-related subjects. This study aims to assess the impact of mesh size degradation on different local and regional geomorphic indices extracted for GDEM and TOPODATA DEMs. Thus, these DEMs, having a mesh size of 30 m, were subsampled to 60, 120 and 240 m and then geomorphic indices were calculated using the full resolution DEM and the subsampled ones. Depending on their behavior, these indices are then classified into stable and unstable. The results show that the most affected indices are slope and hydrographic indices such as Strahler order, stream sinuosity and fractal dimension and watershed perimeter, whereas elevation remains stable. It also shows that the effect depends on the presence of the canopy and geological structures in the studied area.Keywords: Geomorphic indices; Digital Elevation Model; Mesh Size; Scale. Resumo:A geomorfometria é a ciência da descrição quantitativa da morfologia da superfície terrestre por meio de índices geomórficos extraídos de Modelos Digitais de Elevação (MDEs). A análise destes índices é um dos primeiros e mais comuns procedimentos executados em estudos relacionados a

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Section: Study Areamentioning

confidence: 99%

Effect of Digital Elevation Model Mesh Size on Geomorphic Indices: A Case Study of the Ivaí River Watershed - State of Paraná, Brazil

et al. 2017

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“…Os relevos residuais referem-se a morros testemunhos indicativos do recuo da escarpa, os quais foram denominados por Santos et al (2006) De maneira geral, este geomorfossítio está bem preservado, embora a atual ocupação do topo, mais notadamente por moradias e antenas de telecomunicação desativadas, represente possíveis fatores emergentes de fragilidade ambiental.…”

Section: Relevos Residuaisunclassified

Avaliação qualitativa de potenciais geomorfossítios na Área de Proteção Ambiental da Serra da Esperança, Paraná / Qualitative assessment of potential geomorphosites in Environmental Protection Area of Serra da Esperança, Parana State, Brazil

Silva

Oka-Fiori

2017

Cad. Geogr.

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ResumoEnfatizando o componente geomorfológico da geodiversidade, o presente artigo buscou classificar áreas de interesse que representam formas de relevo condicionadas por uma faixa fisiográfica que demarca a transição entre o Terceiro Planalto e Segundo Planalto Paranaense: a Escarpa da Esperança, cuja variabilidade geomorfológica é amplamente determinada por lineamentos estruturais mesozoicos. A avaliação qualitativa no recorte espacial adotado possibilitou a classificação detalhada de oito geomorfossítios, compondo quatro níveis analíticos distintos: Escarpas Festonadas (Salto/Canyon do Rio São Francisco e Saltos Gêmeos); Formas Triangulares (Vale do Rio Charqueadas e Cabeceiras do Rio São João); Relevos Residuais (Morro do Chapéu e Morro do Pico Agudo); e Formas Elevadas (Crista Planáltica e Divisor Interplanáltico). A caracterização dos mesmos foi amparada por modelos teóricos consagrados, análise espacial e, de maneira complementar, pela avaliação de suas potencialidades e vulnerabilidades de uso. Considerando a obtenção de resultados preliminares, pretende-se oferecer subsídios a estudos posteriores que visem à quantificação de seus valores patrimoniais, bem como sua abordagem no plano de manejo da Área de Proteção Ambiental da Serra da Esperança, onde os geomorfossítios avaliados estão inseridos. Palavras-chave: Diversidade Geomorfológica, Diversidade do Relevo, Patrimônio GeomorfológicoAbstract Emphasizing a geomorphological approach to geodiversity, the present article sought to classify areas of interest they represent landforms conditioned by a physiographic band that demarcates the transition between the Third Plateau and the Second Plateau in the Parana State, Brazil: the Esperança Escarpment, whose geomorphological diversity is largely determined by mesozoic structural lineaments. The qualitative evaluation it enabled the classification of eight geomorphosites, composing four analytical levels: Escarpment Landforms (Waterfall/Canyon of the São Francisco River and Saltos Gêmeos); Triangular Landforms (Valley of the Charqueadas River and Headwaters of the São João River); Residual Landforms (Chapéu Hill's and Pico Agudo Hill's); and High Landforms (Highlands Ridges and Plateau Watershed). Its characterization was supported by established theoretical models, spatial analysis and by assessing their potentialities and vulnerabilities of use. Considering preliminary results, it intends to offer subsidies to later studies that seeks the quantification of geoheritage, and its approach in the management plan in the Environmental Protection Area of Serra da Esperança, where the evaluated geomorphosites they are located.

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“…In the São Paulo edge of this reservoir, a relief formed by hills with convex tops and altitudes predominates, ranging from 500 to 700 m. In the Paraná edge tops are usually elongated and sheds are convex with valley bottoms in "V" and "U" shapes. It is a more dissected relief with altitudes ranging from 400 to 1200 m (Ross and Moroz, 1997;Santos et al, 2006).…”

Section: The Reservoirs Morphologic Features and Erosion Processes (mentioning

confidence: 99%

Monitoring marginal erosion in hydroelectric reservoirs with terrestrial mobile laser scanner

Tommaselli

Moraes

Silva

et al. 2014

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Marginal erosions in reservoirs of hydroelectric plants have caused economic and environmental problems concerning hydroelectric power generation, reduction of productive areas and devaluing land parcels. The real extension and dynamics of these erosion processes are not well known for Brazilian reservoirs. To objectively assess these problems Unesp (Univ Estadual Paulista) and Duke Energy are developing a joint project which aims at the monitoring the progression of some erosive processes and understanding the causes and the dynamics of this phenomenon. Mobile LASER scanning was considered the most suitable alternative for the challenges established in the project requirements. A MDL DynaScan Mobile LASER M150 scanner was selected which uses RTK for real time positioning integrated to an IMU, enabling instantaneous generation of georeferenced point clouds. Two different reservoirs were choose for monitoring: Chavantes (storage plant) and Rosana (run-of-river plant), both in the Paranapanema River, border of São Paulo and Paraná States, Brazil. The monitoring areas are scanned quarterly and analysed with base on the point cloud, meshes, contours and cross sections. Cross sections are used to visualize and compute the rate and the dynamics of erosion. Some examples and quantitative results are presented along with an analysis of the proposed technique. Some recommendations to improve the field work and latter data processing are also introduced.

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Mapeamento Geomorfológico do Estado do Paraná

Cited by 84 publications

References 5 publications

Effect of Digital Elevation Model Mesh Size on Geomorphic Indices: A Case Study of the Ivaí River Watershed - State of Paraná, Brazil

Effect of Digital Elevation Model Mesh Size on Geomorphic Indices: A Case Study of the Ivaí River Watershed - State of Paraná, Brazil

Avaliação qualitativa de potenciais geomorfossítios na Área de Proteção Ambiental da Serra da Esperança, Paraná / Qualitative assessment of potential geomorphosites in Environmental Protection Area of Serra da Esperança, Parana State, Brazil

Monitoring marginal erosion in hydroelectric reservoirs with terrestrial mobile laser scanner

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