Coleta, processamento e análise de dados batimétricos visando a representação computacional do relevo submerso utilizando interpoladores determinísticos e probabilísticos

• Autor(a) principal: Ferreira, Italo Oliveira
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3801
• topic: Geodésia; GPS; Hidrografia; Batimetria; Geodesy; GPS; Hydrography; Bathymetry; CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEODESIA

Over 80% of international trade is transported by waterways and Brazil is no different. Only this statement might already be sufficient to justify any study on the area of marine geodesy. However, especially in Brazil knowledge about the reliefs submerged is still scarce. Such knowledge is acquired through bathymetric surveys, focus of this work. The methodology exposed covers all stages of realization of a singlebeam bathymetric survey, fully automated: data collection by applying a dual frequency echo sounder and technical RTK (Real Time Kinematic), processing, data analysis and generation Model Digital Depth (MDP) of an impoundment of Ribeirão São Bartolomeu located on the campus of UFV. At work methods are used for topography and bathymetry data acquisition on the relief of the site and the depth of the impoundment. These were processed and analyzed for the subsequent generation of MDP using deterministic and probabilistic interpolators. Regarding the three-dimensional modeling of the relief submerged studies have been performed to quantify the errors in the modeling through automatic kriging and compare the efficiency of kriging and inverse distance weighted in different sampling grids. It was found that the bathymetric surveys have ideal characteristics for the application of geostatistics. As main results verified that the Kriging systematically conducted by the analyst respecting all the conditions required by it, the bathymetry location represented more accurately compared to other methods studied. Through this work it was also possible to obtain an estimate of the volume of water and sludge reservoir fluidly deposited on the submerged bottom.