Artigos - Planejamento Territorial e Geoprocessamento - IGCE

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  • ItemArtigo
    Moringa oleifera Seed Addition Prior to Sludge Thickening for Supernatant Quality Improvement: Analyses of Clarification Performance and Toxicity
    (2023-05-01) Batista, Gabrielle Soares ; Roledo, Cely ; Odjegba, Enovwo Erere ; Fiore, Fabiana Alves ; Moruzzi, Rodrigo Braga ; Reis, Adriano Gonçalves dos ; Universidade Estadual Paulista (UNESP) ; Federal University of Agriculture Abeokuta (FUNAAB)
    Low-cost and easily accessible sludge treatment technologies are necessary in low- and middle-income countries. This study aimed to evaluate the use of Moringa oleifera seed powder (MO) as a natural sludge conditioner for supernatant quality improvement prior to thickening as a result of gravity settling. The zone settling rate (ZSR) and sludge volume index (SVI) were used to evaluate the gravity settling capacity. Supernatant clarification was evaluated in terms of the capacity to remove turbidity, apparent colour, Escherichia coli, and organic matter associated with zeta potential evolution. The effects on the values of pH and electrical conductivity were also evaluated. Finally, the effects on the toxicity (chronic and acute) of the supernatant effluent were examined. A significant supernatant quality improvement was observed with the addition of MO. The ZSR (0.16 cm/min) and SVI (53 mL/g) results showed that the sludge had good sedimentability, and the addition of MO maintained these characteristics in a statistical manner. Increasing the MO dosage increased the zeta potential of the supernatant, resulting in an optimal dosage of 1.2 g/L, with a removal of 90% turbidity, 70% apparent colour, 99% E. coli, and 40% organic matter. The pH and electrical conductivity values did not change with increasing MO dosage, which is a competitive advantage of MO addition compared to iron and aluminium salt addition. A reduction in the ability to remove organic matter was observed at higher dosages of the natural coagulant due to the presence of residual MO in the final effluent. The optimal MO dosage of 1.2 g/L did not affect the acute or chronic toxicity of the supernatant. These results emphasized that M. oleifera seed powder can improve the supernatant quality and can potentially be a low-cost and easily accessible conditioner for wastewater sludge thickening.
  • ItemCapítulo de livro
    Algae harvesting: Application of natural coagulants
    (2022-01-01) Speranza, Lais Galileu ; Silva, Gustavo Henrique Ribeiro ; Neto, Ana Maria Pereira ; Tiburcio, Rodolfo Sbrolini ; Moruzzi, Rodrigo Braga ; Universidade Estadual Paulista (UNESP) ; Associação Oceano Verde (GreenCoLab) ; Universidade Federal do ABC (UFABC)
    Microalgae are separated and harvested using natural-based coagulants (NBC). Microalgae are grown to provide bioproducts that may be utilized in the tertiary phase after anaerobic digestion at the wastewater treatment plant (WWTP). Coagulation, flocculation, and sedimentation are the most often used processes for harvesting algal biomass and recovering organic and inorganic components from it. The choice of coagulant is critical because it affects both separation performance and biomass harvesting. On the one hand, inorganic coagulants (such as aluminum-based coagulants) are frequently used and can improve the catalyst process during thermochemical conversion; they are toxic (depending on their subsequent use, such as fertilizers), non-biodegradable, and can increase the biomass ash content, thereby decreasing its heating value. It has therefore been suggested as an alternative to using inorganic coagulants, such as NBC. Other auto-flocculant microalgae like Moringa oleifera seeds and chitosan are examples of the many different kinds of coagulants that have been developed. As a consequence, the chapter discussed the characteristics and uses of natural coagulants, as well as the potential drawbacks of their future use. Additionally, coagulation techniques have been explored, as well as their effects on the characteristics of biomass and their use as fertilizers or energy sources.
  • ItemArtigo
    Relevance of tyre wear particles to the total content of microplastics transported by runoff in a high-imperviousness and intense vehicle traffic urban area.
    (2022-12-01) Goehler, Luiza Ostini ; Moruzzi, Rodrigo Braga ; Tomazini da Conceição, Fabiano ; Júnior, Antônio Aparecido Couto ; Speranza, Lais Galileu ; Busquets, Rosa ; Campos, Luiza Cintra ; Universidade Estadual Paulista (UNESP) ; RAM Consultoria e Assessoria Ambiental Ltda ; GreenCoLab – Associação Oceano Verde ; Kingston University ; University College London
    Microplastics (MPs) are an emerging pollutant and a worldwide issue. A wide variety of MPs and tyre wear particles (TWPs) are entering and spreading in the environment. TWPs can reach waterbodies through runoff, where main contributing particulate matter comes from impervious areas. In this paper, TWPs and other types of MPs that were transported with the runoff of a high populated-impervious urban area were characterised. Briefly, MPs were sampled from sediments in a stormwater detention reservoir (SDR) used for flood control of a catchment area of ∼36 km2, of which 73% was impervious. The sampled SDR is located in São Paulo, the most populated city in South America. TWPs were the most common type of MPs in this SDR, accounting for 53% of the total MPs; followed by fragments (30%), fibres (9%), films (4%) and pellets (4%). In particular, MPs in the size range 0.1 mm–0.5 mm were mostly TWPs. Such a profile of MPs in the SDR is unlike what is reported in environmental compartments elsewhere. TWPs were found at levels of 2160 units/(kg sediment·km2 of impervious area) and 87.8 units/(kg sediment·km street length); MP and TWP loadings are introduced here for the first time. The annual flux of MPs and TWPs were 7.8 × 1011 and 4.1 × 1011 units/(km2·year), respectively, and TWP emissions varied from 43.3 to 205.5 kg/day. SDRs can be sites to intercept MP pollution in urban areas. This study suggests that future research on MP monitoring in urban areas and design should consider both imperviousness and street length as important factors to normalize TWP contribution to urban pollution.
  • ItemArtigo
    Rethinking Federalism through the Work of Milton Santos
    (Springer, 2017-01-01) Gallo, Fabricio ; Melgaco, L. ; Prouse, C. ; Universidade Estadual Paulista (UNESP)
    The geographical analysis of a national territory requires a research method that considers the multi-faceted nature of reality, especially for those territories where state organization occurs within a federal structure. This structure uses a policy architecture to resolve the problem of the organization of power in the face of specific regional diversities of each national territory. The concept adopted in this chapter is of the used territory, as proposed by Milton Santos. The hegemonic agent par excellence in the use of territory is the state. In countries of federative state organization (in other words, where the state's power is shared between federated entities of isonomic form) the national public budgets are often characterized by the transfer of tax funds from one federated entity to another. The geographical analysis of these transfers is one way to understand how the state uses the territory. To exercise power, the state uses the territory by imposing norms that regulate and create tensions among entities because some transfers can favour only one group of subnational entities. This brings into question the principle of federal isonomy and can lead to a war of places, animated by disputes for limited public resources. This chapter discusses how Milton Santos's dialectic between normed territory and territory as norm can be used to interpret the taxation disarrangement in the federation.
  • ItemArtigo
    Combined effect of inertial and differential transport on aggregates after ceased mechanized flocculation
    (2022-01-01) Moruzzi, Rodrigo Braga ; Gonçalves, Joice ; Speranza, Lais Galileu ; de Oliveira, André Luiz ; Universidade Estadual Paulista (UNESP) ; Universidade Federal de Uberlândia (UFU)
    The velocity gradient can be controlled for aggregates formation during mechanized flocculation, so that aggregates can be subsequently removed in solid/liquid separation units, providing operational flexibility to the system. Batch assays help in finding the optimal coagulation and flocculation conditions, making possible to change gradient velocities and hydraulic detention time. Nevertheless, the secondary effects as result of inertial and differential sedimentation transport over aggregates after mechanized flocculation are not well known. Therefore, this paper aimed to present the combined effect of inertial and differential transport over aggregates, using nonintrusive image technique and particle image velocimetry (PIV). It was possible to verify that the transport of the aggregates formed after the flocculation step is due to the action of the inertial movement of the fluid and differentiated sedimentation, in a proportion that varies over time. The inertial movement is predominant in the influence of the formation of aggregates from the moment when mechanical agitation is stopped (Gf of 20 s-1) until 5.5 ± 0.5 minutes, when the aggregates are predominantly modified by differential sedimentation. Through the analysis of the aggregates, two moments of growth in their length were observed. The first occured up to the two first minutes, and the other between four and six minutes, when the transition between mechanisms is likely to happen.
  • ItemArtigo
    Analysis of economic and socio-environmental indicators for energy, materials and water management and proposal of technologies and alternatives for sustainable construction in housing.
    (David Publishing, 2020-05-20) Moraes, Clauciana Schmidt Bueno de ; Rocha, Rodrigo Pietro ; Lima, Stephani Cristine de Souza ; Gualter, Leonardo Prudente Torres ; Nolasco, Ana Maria ; Oliveira, Miguel José ; Amado, Miguel Pires ; Pinheiro, Manuel Duarte ; Universidade Estadual Paulista (Unesp)
    The work presents technologies of materials, energy and water management that can be used for sustainable buildings, reducing costs and environmental impacts. The aim was to encourage the reduction of energy consumption, adequate water management and more sustainable material choices in new or existing buildings. For this, a diagnosis of existing technologies and alternatives was carried out in the first stage of the work. The second stage consisted of analyzing among the technologies and alternatives diagnosed from the methodology which can be applied in a fictitious case study of housing, its implementation and maintenance and viability analyzing, finally, environmental indicators, social and economic. The results showed that the best evaluated technologies/alternatives were in Energy: ventilation and natural light; in Water Management: double-action sanitary basin, flow restrictors, aerators with constant flow, and minicistern systems; and in Materials: bamboo, wood, soil-cement brick, earth, steel frame and wood frame, aggregate with ash from rice husks, aggregate with ash from sugarcane bagasse, glass, phase change materials, aggregate with residues of construction and demolition, Portland cement and cement with blast furnace slag; which can be used in the civil construction sector, and provide socio-environmental and economic benefits, encouraging new studies and its use for public/private buildings, aid in the elaboration of public policies to reduce costs and improve the quality of buildings.
  • ItemCapítulo de livro
    A atuação resolutiva do Ministério Público brasileiro: análise para a implementação de políticas públicas.
    (Editora Atena, 2022-05-20) Bonaretto, Cinthia Mara Vital ; Moraes, Clauciana Schmidt Bueno de ; Universidade Estadual Paulista (Unesp)
    Sob a perspectiva do policy cycle como ferramenta de análise de políticas públicas e considerando que os atores do sistema de justiça influenciam essas políticas, este trabalho objetiva caracterizar o perfil resolutivo delineado para o Ministério Público brasileiro a partir da Constituição Federal de 1988 e trazer à discussão as possíveis contribuições e dificuldades de uma atuação resolutiva para a implementação de políticas públicas que sejam mais efetivas, recorrendo-se, para tanto, à analise documental de três normativas que instrumentalizam a pretendida resolutividade: a Carta de Brasília, a Recomendação n. 54/2017 – CNMP e a Recomendação de Caráter Geral n. 02/2018 – CNMP. Com a construção de um quadro comparativo de diversos aspectos presentes nessas normativas, foi possível observar que o Ministério Público tem buscado redefinir seus parâmetros de atuação, pretendendo obter resultados que sejam mais efetivos e resolutivos, preferencialmente não recorrendo à judicialização dos direitos. Também se identificou que a resolutividade almejada se orienta para a promoção da transformação social e para a geração de impacto social relevante, entretanto ela carece de referências e indicadores para se concretizar. Ainda se vislumbrou que esse paradigma resolutivo está em processo de formação, não estabelecido firmemente, e que, embora possa contribuir para fomentar a participação social e ampliação do acesso à justiça, esbarra em algumas dificuldades para o seu efetivo estabelecimento.
  • ItemLivro
    A natureza e o patrimônio na produção do lugar turístico
    (Editora Barlavento, 2016-12-10) Queiroz, Odaleia Telles Marcondes Machado ; Portuguez, Anderson Pereira ; Seabra, Giovanni de Farias ; Moraes, Clauciana Schmidt Bueno de ; Universidade Estadual Paulista (Unesp)
    O livro “A natureza e o patrimônio na produção do lugar turístico” foi organizado pelos autores, Profa Dra Odaléia Telles Marcondes Machado Queiroz (ESALQ/ USP), Prof. Dr. Anderson Pereira Portuguez (UFU), Giovanni de Farias Seabra (UFPB) e Profa Dra Clauciana Schmidt Bueno de Moraes (IGCE/ UNESP). O livro foi editado e publicado pela Editora Barlavento (178 p. 1 edição. 2016). A obra apresenta diversos capítulos que discutem conceitos e estudos de casos, do Brasil e Exterior, sobre as relações entre o turismo e o patrimônio socioambiental no mundo moderno, onde o fenômeno turístico tem uma profunda relação com o patrimônio socioambiental na atualidade, marcando o modo de vida da sociedade contemporânea. Os autores desta obra são de diversas localidades, o que proporcionou um vasto intercâmbio e apresentação da temática sobre o patrimônio socioambiental turístico em diversas regiões do Brasil e de outros países. Dentre as universidades (autores) envolvidas nesta obra cita-se: Escola Superior de Agricultura Luiz de Queiroz (ESALQ/ USP), Universidade Federal de Uberlândia (UFU), Universidade Federal da Paraíba (UFPB), Universidade Estadual Paulista – (Unesp, Rio Claro), Universidade Federal do Piauí/UFPI, Universidade de Araraquara/ UNIARA, Universidade Federal do Paraná, Universidade Federal de Pernambuco, Universidad Nacional de Costa Rica, Universidad de la Habana, Agencia de Medio Ambiente, Ministerio de Ciencia, Tecnología y Medio Ambiente de Cuba e Universidade Nova de Lisboa (Portugal).
  • ItemArtigo
    Tannin-based coagulant for harvesting microalgae cultivated in wastewater: Efficiency, floc morphology and products characterization
    (2022-02-10) Teixeira, Mariana Souza ; Speranza, Lais Galileu ; da Silva, Isabel Costacurta ; Moruzzi, Rodrigo Braga ; Silva, Gustavo Henrique Ribeiro ; Universidade Estadual Paulista (UNESP)
    Tannin-based coagulants (TBCs) have the potential to be used to harvest microalgae cultivated at wastewater treatment plants. Their use would address the circular economy associated with the production of low-toxicity biomass and supernatant. Studies in this field are still scarce, and substantial gaps exist in the definitions of the flocculation process parameters. In this context, the objective of this work was to evaluate TBC performance as a natural coagulant for harvesting microalgae biomass grown in sanitary effluent digested in an up flow biofilter, as well establishing a path to enable recovery and reuse of wastewater nutrients. Classical removal techniques combined with image analysis and light scattering-based equipment were used to evaluate the coagulant performance, recovery efficiency, floc strength, and floc recovery compared to aluminum sulfate (AS). The results showed that TBC was able to efficiently harvest algal biomass from the effluent, achieving color, turbidity, and optical density (OD) removal efficiencies greater than 90% with only 5 min of sedimentation. The optimal harvesting dosage was 100 mg·L−1 for TBC and 75 mg·L−1 for AS. TBC presented the advantage of harvesting biomass without changing the pH of the medium and was also able to present satisfactory removal of the analyzed parameters (color, turbidity and OD) at pH values of 5.0, 7.0, and 8.5. In addition, TBC produced stronger flocs than AS, showing a better ability to resist breakage upon sudden shear rate variations. TBC produced macronutrient-rich biomass and supernatant that was similar to that produced with AS.
  • ItemArtigo
    Avaliação do desempenho de uma unidade em escala real para tratamento de água pluvial empregando a filtração direta por meio de filtro de pressão e amido natural de milho como coagulante primário
    (2013-01-01) Murakami, Marcela Ferreira ; Moruzzi, Rodrigo Braga ; Universidade Federal de São Carlos (UFSCar) ; Universidade Estadual Paulista (UNESP)
    The aim of this study was to investigate the performance of an experimental rainwater treatment system for non-potable uses. Without the first-flush discharge it was expected to control the quality of captured rainwater and to minimize the rainwater by-pass caused by the first-flush strategy. A full-scale direct filtration unit was operated and a solution of natural corn starch was used as the primary coagulant. The color, turbidity e coliform efficiencies of the unit was analyzed based on filtration loads and the net water production was estimated. The results pointed out turbidity removal up to 70.8% and color removal up to 61.0%. The backwash of the filtering system was completed in 3 minutes at the rate of 1,440 m3/m2day with consumption of treated water from 0.5% to 2.2%, based on the potentially harvesting.
  • ItemArtigo
    Hydrogeochemistry characterization from Adamtina Aquifer in the urban area of Bauru, SP
    (2014-07-01) Canato, Helena Mello ; Conceição, Fabiano Tomazini ; Hamada, Jorge ; Moruzzi, Rodrigo Braga ; Navarro, Guillermo Rafael Beltran ; Universidade Estadual Paulista (UNESP)
    This work characterized the groundwater from Adamantina Aquifer in the urban area of Bauru, São Paulo State. Twenty four sampling points were established in the Adamantina Aquifer, Bauru Aquifer System, analyzing the following parameters: electrical conductivity, temperature, pH, alkalinity, phosphate, sulfate, chlorine, fluorine, nitrate, calcium, sodium, potassium, magnesium, silica, iron and aluminum. The results indicated that the groundwaters in the urban area of Bauru possess pH slightly acid and low conductivity, with the ionic composition presents low cations and anions concentration, being they classified as soft water and calcium-bicarbonated. Natural sources of elements/compounds can be attributed to the dissolution of carbonates during the water/rock interaction, controlling pH, alkalinity, electrical conductivity and hydrolysis of other mineral constituents of sedimentary rocks from Adamantina Formation, with the exception of quartz. High concentrations of N-NO3 -found in some public supply wells in urban Bauru originated due to sewage.
  • ItemTrabalho apresentado em evento
    The estimate of topographical variables for soil erosion modelling through geoprocessing
    (2000-01-01) De Morisson Valeriano, Márcio ; Garcia, Gilberto José ; Agronomic Institute of São Paulo ; Universidade Estadual Paulista (UNESP)
    : The technical requirements for geoprocessing of topographical data were studied, from digitizing until the obtention of the topographical factor of the Universal Soil Loss Equation (USLE), through calculation of slope (angle) and length. The development of the methods were based on data from manual cartographic survey and geographical information system (GIS) results of Sao Joaquim creek watershed (Pirassununga, SP, Brazil). A preliminary study, on the spatial behavior of the variables, their relations to local relief and to the topographical factor sensibility supported the selection of geoprocessing optimal procedures and parameters to achieve the maximum quality of the generated digital terrain models (DTM), and therefore, of all GIS results. Tests with the slope calculation indicated the need of high resolution, and the importance of post-processing (smoothing) and numerical fit. A method to obtain slope length was developed using spatial analysis functions of GIS. Results of the anisotropic cost analysis were correlated to measureed length, requiring linear fit. Errors for digital estimates prevailed in steep relief areas.
  • ItemArtigo
    Mapeamento dos índices de sensibilidade ambiental ao óleo em trecho do rio tietê
    (2016-01-01) Beneditti, Cristina Aparecida ; Riedel, Paulina Setti ; Lupinacci, Cenira Maria ; Milanelli, João Carlos De Carvalho ; De Aguilar, Ramon Lucato ; Universidade Estadual Paulista (UNESP) ; Milanelli Consultoria Ambiental
    The impacts caused by accidents involving oil spills in freshwater affect the environment but also cause socioeconomic harm to local people. In order to help identifying physical environments sensitive to the presence of a hydrocarbon, this study was carried out by applying a fluvial sensitive environmental index to oil (ISF), adapted from the coastal environment. To achieve this goal, a Tiete river stretch was selected, where field surveys were carried out covering by boat 146.9 km of the river. Marginal geomorphological characteristics were observed, and the beginning and the end of each segment were identified with GPS and recorded with photographs. The organization of a GIS database and the classification of the ISF enabled to identify that the index 10, characterized by alluvial deposits, is present in 51.1 km of the banks, which is equivalent to 34.8[%] of the total area, the most recurrent index in the study area. However, considering the ISF 9 and 10, the most sensitive ones, a total of 40.5[%] of the river margins is considered with high environmental sensitivity to oil, and these settings are related to the dam of Tietê river for the construction of Barra Bonita reservoir.
  • ItemArtigo
    Avaliação da suscetibilidade a movimentos de massa no município de Várzea Paulista (SP) utilizando os sistemas de informação geográfica
    (2013-10-29) Venancio, Andréa Simone ; Pancher, Andréia Medinilha ; da Cunha, Cenira Maria Lupinacci ; Machado, Fábio Braz ; Soares Junior, Adilson Viana ; Universidade Estadual Paulista (UNESP) ; UNES ; Universidade Federal de São Paulo (UNIFESP)
    The objective of this study was to identify and map areas susceptible to mass movements, through the use of geotechnologies in the town of Várzea Paulista (SP). For this purpose we used slopes, geological, geomorphological and use-and-occupancy maps, which were superimposed by Multicriteria Analysis in GIS ArcGIS. Each subject received a weight of influence to the outbreak of such processes and the final result was a susceptibility map to mass movements of the municipality in question. A parallel study was drawn about the orientation of strands to determine those who are at higher risk compared with data collected in the field. There are many occupied areas within the municipality that require monitoring of the government, especially in the rainy season, as they are fragile in places in terms of geological and geomorphological features.
  • ItemArtigo
    Atributos de qualidade de solos sob dois diferentes tipos de manejo no município de Ibiúna/SP, Brazil
    (2011-10-01) Manfré, Luiz Augusto ; Da Silva, Alexandre Marco ; Urban, Rodrigo Custódio ; Universidade de São Paulo (USP) ; Universidade Estadual Paulista (UNESP) ; Universidade Estadual de Campinas (UNICAMP)
    Agricultural activity has direct consequences on the soil and water quality. Thus, assessing environmental impacts of this vital economic activity, through soil attribute analysis, is essential to the proposal of alternatives. The aim of this study was to analyze soil quality under different land management practices, conventional and organic. The study was carried out in a watershed of the Ibiuna municipality, SP, Brazil, an important supplier of agricultural products for the São Paulo metropolitan area. A hundred samples were collected, 20 in each type of land use: reforested areas, native vegetation, pasture, conventional cultivation and organic cultivation. The soil resistance to penetration, its pH (in water and KCl), electrical conductivity, bulk density, particle density, porosity, soil color, soil texture and the percentages of carbon and nitrogen were analyzed. The data were statistically analyzed, searching for significant differences. The results of soil analysis showed great similarity between the organic and conventional culture, with no statistical differences. However, organic cultivation showed greater similarity to the soil of native vegetation in the percentage of carbon and nitrogen in soils compared to conventional culture. Thus, the discussion begins on a topic very little explored so far, and the results obtained should be further studied.
  • ItemArtigo
    O processo de urbanizacao/industrializacao e seu impacto sobre algumas caracteristicas do setor agricola do Estado de Sao Paulo: resultados preliminares.
    (1983-01-01) De. O. Gerardi, L. H. ; Universidade Estadual Paulista (UNESP)
    Investigates the relationship between selected agricultural variables and the degree of urbanization in the State of Sao Paulo. Hypothesizes that the urbanization process brings significant changes in agricultural characteristics such as mean size of agricultural unity of production, input (in CrS)/cultivated ha, value of goods, and investments, use of mechanical power in agriculture, and fragmentation of holdings. These were tested by the X2 method and the results demonstrated that urbanization has a significant impact on the selected variables and that the more urbanized area coincides with the most modernized agriculture. - from English summary
  • ItemArtigo
    Provenance of metasedimentary rocks of the Araxá group in the central Brasília belt
    (2019-01-01) Navarro, Guillermo Rafael Beltran ; Zanardo, Antenor ; Montibeller, Cibele Carolina ; Leme, Thaís Güitzlaf ; da Conceição, Fabiano Tomazini ; Valeriano, Claudio de Morisson ; Universidade Estadual Paulista (UNESP) ; Universidade do Estado do Rio de Janeiro (UERJ)
    The Araxá Group in the region of Morrinhos – Marcelândia is constituted of pelitic to psammo-pelitic rocks metamorphosed in amphibolite facies, kyanite/ staurolite stability field. Chemical composition and La/Lu, La/Sc, Th/Sc, La/Co, Th/Co and Cr/Th rates of these rocks suggest that the main source of these sediments were felsic rocks from magmatic arcs. T DMNd model ages (1.21 and 1.76 Ga) and U/Pb ages (< 1.0 Ga and > 1.0 Ga in detrital zircon) suggest contribution of a neoproterozoic (predominant) source and contributions of an older paleo-mesoproterozoic source. The congruence of these geochronological data with geochemical signatures of this geological unity allow to state that a significant part of the Araxá Group in this region had rocks from neoproterozoic magmatic arcs as source, implying that these were deposited in fore arc basins.
  • ItemArtigo
    Thermobarometry and P-T path of metasedimentary rocks of the araxá group from goiás
    (2020-01-01) Navarro, Guillermo Rafael Beltran ; Zanardo, Antenor ; Montibeller, Cibele Carolina ; Leme, Thaís Güitzlaf ; Da Conceição, Fabiano Tomazini ; Universidade Estadual Paulista (UNESP)
    In the southeastern region of Goiás state (Caldas Novas - Morrinhos - Rochedo region) outcrop psammitic, psamo-pelitic and pelitic metasediments related to the Araxá Group. In the Caldas Novas region (Caldas Novas Domain), the mineral associations related to the metamorphic peak are typical of the upper greenschist facies/lower amphibolite facies and the calculated metamorphic peak indicates temperatures between 500°C and 570°C and pressures between 7-8 kbar, kyanite zone. The mineral associations related to the metamorphic peak in the region between Marcelândia - Morrinhos - Rochedo (Araxá West Domain) are typical of medium to upper amphibolite facies and the thermobarometric calculations show metamorphic peak at 600°C - 670°C and 9-11 kbar, under conditions of amphibolite facies, kyanite zone. The calculations with the geothermometer Zr-in-Rt, performed for pressures of 10 kbar, indicate a minimum temperature of 527°C and a maximum of 688°C. The P-T path, inferred based on textural and thermobarometric data, is clockwise. The mineral associations observed in congruence with mineral chemistry analyzes and thermobarometric studies suggest a progressive metamorphic zoning from E to W in the Araxá Group in the Caldas Novas - Morrinhos - Rochedo region. However, the thermobarometric data suggest that the sets have different metamorphic histories and that metamorphic zoning is a result of tectonic structuring.
  • ItemArtigo
    Contribution of geomorphological characteristics in sensitivity environmental analysis of oil in rivers: Case study of Araquá river (SP, Brazil)
    (2018-01-01) Ribeiro, Daniela Ferreira ; Lupinacci, Cenira Maria ; Riedel, Paulina Setti ; Universidade Estadual Paulista (UNESP)
    Contribution of geomorphological characteristics on the enviromental sensitivity to oil spill in rivers: Case study araquá river (SP, Brasil). Petroleum is one of the main sources of energy used by man currently. This intense utilization entails risks to the environment in relation to accidents involving spills of this product in the ecosystems, tauting socioeconomic and environmental damages. The main objective of this research is to identify and analyze the geomorphological attributes that contribute to the environmental sensitivity in fluvial environments in a section of the Rio Araquá (SP). From the identification of the Environmental Sensitivity Indexes to Oil (ESI), using the geomorphological fluvial parameters of the Araquá River, located in the city of São Pedro (SP), for this river the Environmental Fluvial Sensibility Mapping to Oil was developed. The study area presented a high sensitivity index due to the presence of numerous alluvial deposits with presence of vegetation. These deposits are due to the meandering dynamics of the fluvial course and also to the innumerable changes caused by human actions, mainly mining activities. The geomorphological mapping was fundamental for the analysis and identification of the geomorphological features and for the determination of the ESI features. Finally, the importance of the work is highlighted, since studies related to environmental sensitivity to oil in fluvial environments in the scale worked on in this research are still underdeveloped in Brazil.
  • ItemArtigo
    Method for evaluating plant cover and quantification using pixel to pixel correlation indices
    (2018-07-01) de Souza, José Carlos ; Lopes, Elfany Reis Do Nascimento ; de Sousa, Josy Ana Paixão ; Martins, Antônio Cesar Germano ; Lourenço, Roberto Wagner ; Universidade Estadual Paulista (UNESP)
    This study brings results on Normalized Difference Vegetation Index (NDVI), the Adjusted Vegetation Index of Soil (SAVI) and the Index of Water by Normalized Difference (NDWI) through a method that uses correlation matrices built on a pixel to pixel combination for spatial and temporal analysis of plant cover. The study was developed by using Landsat 8 images from January and August, 2015. Image processing was performed with ArcGis and Matlab building correlation matrices to evaluate variations of each index in Brazilian vegetation. Results showed decreasing values of the three indices from wet to dry period. Climatic conditions influenced on the vigor and moisture content of vegetation. The pixel to pixel correlation method is appropriated to study vegetation changes and quantify increase, decrease or maintenance of vegetation.