193 resultados para Urdaibai geomorfologia
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The mineral sector is of utmost importance for Brazilian economic growth, an area which depends on basic geological research to enlarge known deposits and in process of mining, besides discovering new occurrences and mineral deposits. This set of activities is named mineral research, which planning involves economy concepts, market demands and use of methods and techniques for geological evaluation, direct and indirect. This paper aim at performing geophysical detailing on occurrences of supergenic manganese located in the northwest portion of the State of São Paulo, Itapira, for spatial dimensioning of mineral targets, besides the attempt to correlate among the content on physical parameter measured by geophysics. The lack of scientific publications by Brazilian researchers in this theme, availability of previous studies for the selected targets, commercial importance of the mineral goods for the Brazilian Trade Balance, justify the performance of the present research project
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The scope of this work is the study of natural cavities in gullies through geophysics. The studied area is located in the city of São Pedro (SP) more precisely in the gully of Tucunzinho. The historic of the area shows that, since the 60s there were problems with the high rate of erosion in the gully. In addition to increased erosion, there is the appearance of cavities inside responsible for rebates, aggravating the situation. Geophysical methods have been successfully applied in environmental studies since they are noninvasive, are fast and relatively inexpensive. In order to better understand the context of formation of the pipes in relation to local geology, three arrangements were compared for the method of Electrical Resistivity, Schlumberger, Wenner and Dipole-dipole. Then, it was possible to determine which one is the best for this type of study. According to the data obtained in the field, the Schlumberger array presents more consistent results in relation to the erosive context analyzed
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This research aims to analyze the natural fragility of Piracicaba Urban Site, through the analysis of a letter of Fragility Potential obtained through the data crossing the geomorphological cards, Pedologic Slope and use and occupation of the land to be developed during the project. The methodology to be used is that proposed by Ross (1990, 1994) together with the guided ideas Anthropogenic geomorphology, so that the man-made conditions of modification of the relief can be inserted in the final analyzes. The results showed that the Córrego do Enxofre Basin has high fragility of values, it is not a rich area for human occupation
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The environmental sensitivity charts to oil constitute an important tools for contingency planning and assessment of damage caused by oil spills. The main objective of this article is to evaluate the sensitivity of river dynamics to oil spills. Through the identification and mapping of fluvial geomorphological features will be assessed the importance of these resources in terms of sensitivity to oil spills. Through satellite images, was obtained the geomorphological mapping and geomorphological parameters were analysed, in order to characterize the environmental sensitivity to oil spills and derivatives. Therefore, the implementation of an environmental sensitivity mapping from geomorphological parameters contributes to the mapping of the environmental sensitivity to oil, which will assist in the containment and cleanup procedures in case of accidents in fluvial and terrestrial environments, that are slightly studied in Brazil
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Landscape is the result of interaction between tectonic, weathering and pedogenetic processes, so it is necessary to understand the morphogenesis and relate it to the landforms and landscape. Therefore, this project comprises a geomorphological characterization of some areas associated with the fault zones of Taubaté Basin, at the surroundings of the cities from São José dos Campos to Taubaté SP, emphasizing the Quaternary landscape evolution, where the normal faults played an important role in controling and they were originated, mostly, from the reactivation of Precambrian fault zones by tectonic action. The rift valley scenario is highlighted in the region, identifying the sharp relief from the basin boundary, featuring both Serra do Mar and Serra da Mantiqueira, and a central depressed area where the Taubaté Basin is located. Deforming or modifying basin features are identified, promoting the rearrangement and conditioning of the drainage network and relief, which indicates the presence of morphostructures, conducting to the deduction of a late tectonic process
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Agronomia (Ciência do Solo) - FCAV
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Pós-graduação em Geociências e Meio Ambiente - IGCE
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Pós-graduação em Geografia - IGCE
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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This work aimed to carry out a study of the environmental conditions of the Permanent Preservation Areas (PPAs) in the sub-basin of Marimbondo Stream in the city of Jales (SP), through remote sensing techniques and taking as the basis Brazilian environmental legislation, the Forest Code Federal Law Nº 12,651/2012. Permanent Preservation Areas are inserted intrinsically improved conditions in the quantity and quality of water in the areas of springs and along water bodies in rural properties. Therefore, we also carried out studies on the new Forest Code compared to the old Federal Law Order no. 4771/1965 and the observation of its application in the area of sub-basin as well as carrying out the simulation. The results of this research allowed toverify the need for direct implementation of the monitoring measures with the Forest Code, and this water management tool in Brazil, which will ensure sustainable management practices of land use and land cover, with direct benefits to water production, mainly for public supply. Also there was a greater need for involvement by the public actors, the Basin Committee of the São José dos Dourados and the municipal government of Jales, in order to truly act aimed at the protection and maintenance of the water body Stream Wasp
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Pós-graduação em Geografia - FCT
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)