Time Series Landsat
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Spectral-temporal classification of orbital images to map sugarcane with pre-harvest straw burning / Classificação espectro-temporal de imagens orbitais para o mapeamento da colheita da cana-de-açúcar com queima da palha
In order to reduce the time established by law to cease the pre-harvest burning of sugarcane from 2021 to 2014, the Environmental Secretary of São Paulo State (SMA-SP) and the Sugarcane Industry Association (UNICA) signed, in June 2007, an Agro-Environmental protocol of intentions. Therefore, the monitoring of the sugarcane crop, with and without the practi
Publicado em: 2009
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14. Avaliação do desmatamento e seus possíveis impactos nas mudanças climáticas da bacia do Rio Turvo Sujo - MG / Investigates impacts of deforestation on the regional climatic changes of the Turvo Sujo River Basin
Este trabalho investiga os impactos do desmatamento nas mudanças climáticas regionais da Bacia do Rio Turvo Sujo, localizada no estado de Minas Gerais, durante os últimos 24 anos. As imagens obtidas do sensor TM/Landsat referente aos anos de 1984, 1989, 2000 e 2008 foram usadas para calcular a taxa de desmatamento existente na área de estudo. Os dados de
Publicado em: 2009
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15. Crop discrimination using harmonic analysis of EVI MODIS time-series data / Discriminação de culturas agrícolas utilizando análise harmônica de séries temporais de dados EVI-MODIS
In the present decade, agriculture has increased worldwide in importance due to sensitive matters such as the current food crisis, biofuels boom, and the land use and land cover changes from savanna/forest areas to agriculture expansion. As a consequence, crop monitoring at regional and national scales has become essential at different levels of knowledge an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2008
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16. Classificação fitofisionômica do cerrado no Parque Nacional da Chapada dos Veadeiros, GO, com a aplicação de uma análise combinatória com filtros adaptativos em imagens TM Landsat
The soil fertility and water availability are some of the many factors which controls the Cerrado biome vegetation and are in charge of a great diversity of phytophysiognomies that encompass fields, savanna or forest formations. The vegetal mass amount variation occurs according to the vegetation formations and takes its effects over the spectral signatures
Publicado em: 2008
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17. Discriminação de culturas agrícolas utilizando análise harmônica de séries temporais de dados EVI-MODIS / Crop discrimination using harmonic analysis of EVI MODIS time-series data
In the present decade, agriculture has increased worldwide in importance due to sensitive matters such as the current food crisis, biofuels boom, and the land use and land cover changes from savanna/forest areas to agriculture expansion. As a consequence, crop monitoring at regional and national scales has become essential at different levels of knowledge an
Publicado em: 2008
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18. Avaliação da desertificação no sudoeste do estado do Piauí, através de técnicas de sensoriamento remoto / Desertification assessment in southwest of Piauí state, through remote sensing techniques
Atividades de agricultura, queimadas e exaustiva exploração de diamantes são os fatores responsáveis pelo processo de desertificação que ocorre na região sudoeste do estado do Piauí, abrangendo os municípios de Gilbués, Barreiras do Piauí, Monte Alegre do Piauí e São Gonçalo do Gurguéia. Imagens Landsat TM (Thematic Mapper), adquiridas nos ano
Publicado em: 2007
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19. Utilização de perfis multi-temporais do NDVI/AVHRR no acompanhamento da safra de soja no oeste do Parana / Use of NDVI/AVHRR time-series profiles for soybean crop monitoring in the west of Parana, Brazil
Crop yield forecasting systems are important sources of information for helping Governrnent and private institutions in agricultural trade matters. The traditional methods of crop yield forecasting norma1ly do not provide precise estimations, due to its subjectivity. The use of Geothecnology has been studied for the development of more efficient crop yield f
Publicado em: 2007
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20. Land use change and hydrologic behavior analysis in the Preto river and Entre Ribeiros creek basins / Mudanças no uso do solo e comportamento hidrológico nas bacias do rio Preto e ribeirão Entre Ribeiros
The water resources planning and management have the objective to discuss and propose solutions for the watersheds problems looking for the sustainable water use in the urban and rural areas. The relationships between the land use and water resources have been marked by the failure, with environment significant damages, what has transformed in losses for all
Publicado em: 2007
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21. Forecasting models for flood in real time at Nova Era county - MG / Modelos de previsão de enchentes em tempo real para o município de Nova Era MG
A bacia do rio Doce é frequentemente atingida por inundações, causando prejuízos econômicos, perdas humanas e materiais. Em decorrência desta problemática, a CPRM (Companhia de Pesquisa de Recursos Minerais) de Belo Horizonte criou, em 1997, o Sistema de Alerta Contra Enchentes da Bacia do Rio Doce, no intuito de minimizar os impactos oriundos das inu
Publicado em: 2006
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22. Remote sensing of water circulation dynamic to the Curuai floodplain/Amazon River / Sensoriamento remoto da dinâmica de circulação da água do sistema planície de Curai/Rio Amazonas
In this research it is hypothesized that once water circulation in floodplains is driven by the so called flood-pulse, optical images acquired at different water levels, disregarding hydrological year can be applied to capture time-space variability in water masses types flowing into the Amazon River floodplain. The main objective in this research was to dev
Publicado em: 2005
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23. Índices de vegetação e valores de proporção na caracterização de floresta tropical primária e estádios sucessionais na área de influência da Floresta Nacional do Tapajós-Estado do Pará / Vegetation indices and fraction values to characterize primary rainforest and sucessional stages in the area of influence of Tapajos National forest - Para State
In May 1995, a field campaign was carried out in the innerside and proximities of Tapajós National Forest - Pará State, aiming to measure dendrometric variables and leaf area index (LAI) in vegetation communities of tropical rainforest and regrowth, represented by three stages, c1assified in function of age: less than 5 years; 5 to 10 years and more than 1
Publicado em: 1996
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24. Processamento de dados multiespectrais, obtidos por plataformas orbitais da série LANDSAT, para estudos da qualidade da água na Baía de Guanabara / Processing multispectral data obtained by orbital platforms of the LANDSAT series for studies of water quality in Guanabara bay
In this paper we try to establish the grade of relationship existing among various Guanabara Bay water quality parameters and LANDSAT MSS video data. We have chosen an empirical: basis approach, but we had to select, from the available data, some parameters as follows: chlorophyll, water transparency using Secchi disk, salinity and dissolved ammonia. Only tw
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/1980