Geoestatística aplicada na avaliação da qualidade de dados geoespaciais

• Ano de defesa: 2013
• Autor(a) principal: Santos, Alex da Silva
• Orientador(a): Medeiros, Nilcilene das Graças
• Banca de defesa: Galo, Maurício
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Engenharia Civil
• Departamento: Geotecnia; Saneamento ambiental
• País: BR
• Palavras-chave em Português: Qualidade de dados geoespaciais; Geoestatística; Normas ISO; Amostragem; Metadados; INDE; BC250
• Palavras-chave em Inglês: Quality of geospatial data; Geostatistical; ISO standards; Sampling; Metadata; INDE; BC250
• Área do conhecimento CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEODESIA::CARTOGRAFIA BASICA
• Link de acesso: http://locus.ufv.br/handle/123456789/3816

In the process of production cartographic is natural the pursuit of quality spatial dataset. Throughout time technological evolution provided at the professionals in the area a constant growth in this production and in demand of these geospatial information by the users. However, to support this evolution without losing the qualification of space data is necessary to adopt standards. Furthermore, the complexity of geographic information in many aspects, require sampling techniques to measure and assess the quality of the spatial dataset in order to ensure with statistical basis, a significant amount and an appropriate spatial distribution of its samples. In Geosciences is intuitive to think in spatial correlation of a phenomenon under study and Geostatistics provides tools to identify and represent the behavior of this dependence. The spatial analysis of results from an inspection of a quality cartographic product is seldom addressed in literature, restricted only to conclusions descriptive and tabular, based on the assumption of classical statistical of independence from the observed data. At the present time is in deploying the National Spatial Data Infrastructure of Brazil (INDE), where several cartographic products are made available to the society, along with their geographic metadata. The metadata facilitates access to spatial data, but serve partly aspects concerning the quality of the dataset. Therefore, this thesis proposes a methodology for the quality inspection of spatial datasets of the INDE, based on international standards, concepts of generalization and elements of quality defined in literature as well as the spatial analysis of results of this inspection by using geostatistical methods and the representation of this assessment by means of quality maps. The method of quality evaluation data developed and applied on the Base Cartographic Continuous of Brazil at the 1:250.000 scale - BC250 with a focus on certain aspects of quality. The quality maps generated showed regionalizations in the indicators of quality inspected, confirmed by the staff that producer of cartographic base, subsidizing the producers themselves and users in understanding the spatial behavior quality product cartographic under study.