358 resultados para Geociencias - Sensoriamento remoto
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Pós-graduação em Agronomia - FEIS
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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The lack of environment planning studies in Brazil drives to an imbalance due to a disorderly occupation in some areas. As the youngest Brazilian state facing a fast occupation, Tocantins is included on this situation. In order to provide guidelines for an environment planning studies, this paper is under geoenvironmental zoning which is based on the integration of physical aspects. This detailed study supported by maps elaborated on GIS environment, will be able to present the support for planning studies focused on the potential or limitation of the area
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The present study characterizes the physical environment for its fragility and its capacity to support, through geological and geomorphological properties in the study area, concerning primarily with a sustainable environmental planning for the construction and maintenance of buried linear works. The study area is located on a portion of the Paraiba Valley, which is between the latitudes 22 °30' S and 23°00' S and longitudes 44°30' W and 45° 15' W, between cities of Aparecida (SP) and Queluz (SP). The methodology was based in the visual interpretation of TM/Landsat-7 images, using as a criterion the element textural image and its way of organizing space. To do so, it was set five levels of textural density, enabling thus to the partitioning of the area in areas counterparts (Z.H.s). As a result, it was identified 133 Z.H.s. By using the same criterion textural image the following physical properties were classified: Erosion Resistance, Permeability, Plasticity X Brittle, Tropia and Relief Asymmetry for each zone counterpart, and then grouped themselves as they hold all properties equal in Units Geoenvironmental (U.G.s). As a result it was identified 18 U.G.s. The work presents, as a final result, a thematic map with favorable or restrictable sectores to the design of buried linear works. Based on this map, it can be propose traces to buried linear works, analyzing their suitability to the physical environment and reducing the impacts caused to the environment.
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The style of life in the cities deprives the man of the contact with nature. As a way to escape from the turbulent reality of the urban system, the urban planning provides areas that allow the contact between man and nature like botanical gardens, parks, leafy squares, etc. These places, through specific analysis, are also called green areas. Thus, the main purpose of this research is to outline and analyze, through geoprocessing techniques, green areas of Americana, São Paulo considering them as indicators of urban environmental quality. This evaluation will be based on the methodology adapted by Bargos (2010) where products of remote sensing were used (aerial photos and satellite images) and it will be also based on field work and calculation of the amount of green areas. The software ESRI ArcGIS® will be used to create thematic maps connected with city’s green areas. Based on the results achieved in this study, it’s expected to contribute to the government of the city of Americana in order to provide benefits of analysis for decision makers in the context of urban planning aiming an improvement in the urban environmental quality, thus benefiting its entire population
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The objective of this paper is show the development of an Eletronic Control Unit (ECU) for Baja-SAE vehicles from its requirements to final implementation. An ECU for Baja-SAE vehicles is made of electric and electronic circuits (appropriated to the hostile situations of an off-road competition) able to make important measurements for the running or stand-by vehicle performance. For this development, some concepts were studied: embedded electronics concepts (mainly microcontrollers and data acquisition circuits) and sensoring. Both the studies were made considering the off-road environment. After these initial studies, the elaboration of the basics hardware and software (under simulations) has begun, and this elaboration objectives maximum performance and low implementation cost. After the theorical studies, basic definition of the hardware and software’s architectures and simulations, the printed circuit boards (PCB) were made, as exhaustive tests in these boards for debugging and verify if the boards work well. Once the system was tested in the university, it ran into a regional Southeast competition in 2010, that definitely proved the efficiency of the whole system
Caracterização estrutural do Lineamento de Piúma e sua influência na porção norte da Bacia de Campos
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The detailed study of the Brazilian continental margin basins became possible with the advancement of geophysical tools, with emphasis on seismic reflection. Characterizing the structural and stratigraphic elements of Brazil’s marginal basins they realized that there was a relationship with structures present on the adjacent continental basement. So many works began to be made to understand this relationship and know the major factors that influenced the evolution of the continental margin. The study area of this work includes the northern portion of the Campos Basin and the continental outcropping adjacent areas, which corresponds to the northern of Rio de Janeiro state and the southern of Espirito Santo state. This area stands an important structural feature of NW-SE direction with a projection to the Campos Basin called Lineamento de Piúma. The outcropping basement rocks belongs to the Ribeira Belt which was bonded to other mobile bands forming the continent Western Gondwana during the Brasiliano Cycle, which later fragmented giving rise to the Atlantic Ocean. The opening of the ocean results on the formation of the marginal basins of Brazil. These basins have continental, transitional and marine facies. On Campos Basin the continental phase resulted on the formation of horsts and grabens bounded by synthetic and antithetic faults. Continuing rifting formed the saline lakes that deposited siliciclastic and carbonate sediments. The transitional phase resulted on thick packages consist of evaporites (halite and anhydrite) that was deposited in lagoon environment, tectonically quiet arid and semi-arid. The marine phase it deposited siliciclastic and carbonate in the Campos Basin resulting in shales, marls, limestones, ritmito, turbidites, sandstones and others. The objective of this study is to investigate the possible continuation... (Complete abstract click electronic access below)
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O processo de urbanização é bastante expressivo na modificação do clima na escala local, pois as formas materiais assumidas pela cidade, bem como as atividades que nela se desenvolvem, provocam anomalias nos elementos do clima como a temperatura, umidade relativa do ar, direção e velocidade do vento. Destes, a temperatura tem se destacado nos estudos sobre o clima urbano, pois as características da área urbana promovem seu aumento tanto no ar quanto nos alvos da superfície. Nesse sentido, este estudo objetivou detectar as anomalias térmicas intraurbanas e suas magnitudes, relacionando-as com os tipos de uso e ocupação da superfície do solo no município de Presidente Prudente-SP. Para tanto, foram realizadas análises das diferenças térmicas e higrométricas entre o urbano e o rural em dias representativos do inverno e do verão, e a verificação da temperatura da superfície através do sensoriamento remoto no infravermelho termal. Os resultados apresentaram que os tipos de tempo, assim como as características da superfície foram responsáveis pelas maiores ou menores diferenças entre a área urbana e a rural, o que demonstra a importância de se adequar o planejamento urbano às características do ambiente local
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The transportation of oil through pipelines raises a concern related to safety and environmental impacts they may cause, especially when exposed to risks that affect their integrity. Among the natural phenomena that can affect the pipelines are erosion and landslides. Considering the large territory involving the pipelines, remote sensing tools have a great applicability for data acquisition. For this, visual analysis techniques were applied to perform change detection in order to monitor erosion features and landslides along a stretch of pipeline Rio de Janeiro – Belo Horizonte, in the state of Rio de Janeiro. The work involved the characterization of the study area as well as the erosion and landslide processes, through bibliographical data. The satellite image processing and the application of change detection techniques were developed in two scenes for the years 2002 and 2010. It was noted a small increase in the number of the identified features, however with regard to their area, a decrease of 21.7% was observed
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The Companhia Energetica de Sao Paulo - CESP owns six hydroelectric dams in the state of São Paulo. The dams, both in its construction and in operation, cause some environmental impacts, most of them negatives, for example, the flooding in regions before not flooded, deviation of the river’s course, among others, bringing harm to flora and fauna of these environments. As a way to compensating these damages, the CESP has acquired a region that was influenced by Sérgio Motta Hydroelectric Plant Engineer, or Porto Primavera, and turned it into Reserva Particular do Patrimônio Natural Foz do Rio Aguapeí. By law it fits in a Conservation Unit, and thus should be contemplate for a management plan, ie, a multidisciplinary technical document which allows, simply, the practice of actions within and around in a sustainably way. This work aimed at developing a land cover map of the reserve for this plan can be made and executed more efficiently. Initially, the project included field visits and meetings with members of the CESP to be specified classes contained on the map. Later, we ran different types of classifications of multispectral images (TM / Landsat 5)... (Complete abstract click electronic access below)
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The area of this work is located along the Northern portion of the Pelotas´s basin. The onshore region extends from the Southern portion São Paulo State to the North of Rio Grande do Sul State, with a total area of 440 530 km ². The objective of the research is to characterize the main geological structures of the outcropping basement in the Paraná Basin and its correlation with the offshore portion of the Pelotas Basin. The characterization was performed through the integration of surface (SRTM images and outcrops) and subsurface data (seismic data and well logs), the method includes the use of remote sensing techniques and seismic interpretation. The main structures to be analyzed are the Tibagi Lineament and the “Torres Syncline in order to verify its influence on the geological evolution and deformation of the basin. As result, it was identified the continuity of the both structures inside the offshore basin (Pelotas Basin); but only the Tibagi Lineament represents an important structural feature in the offshore basin. In this sense, the Tibagi lineament shows a NW-SE direction along the both basins (Pelotas and Paraná) and it is defined by drainages and relief on the continental portion. It was classified as a graben structure limited by normal faults and it also was verified a trend of faults inside the lineament that cuts all the sedimentary package of Itararé Group from Paraná Basin. The Torres syncline is a structure that connects the arches of Ponta Grossa and Rio Grande, showing NW-SE orientation and a low angle dip in the NW direction. Its projection into the Pelotas Basin was not recognized by the methods applied in this work, because a preliminary analyze indicates that its projection corresponds to a structural high inside the Pelotas Basin