19 documents found, page 1 of 2
Avaliação de suscetibilidade à movimentos de massa, utilizando as variáveis mor...
Carmo, Alcione Moreira do; Souto, Michael Vandesteen Silva; Duarte, Cynthia Romariz; Lopes, Pamela Sampaio; Sabadia, José Antônio BeltrãoIn recent decades, natural disasters caused by landslides have caused many deaths and economic losses in Brazil and as worldwide. Susceptibility maps to mass movements have been used to indicate areas susceptible to these phenomena in mountainous regions, allowing better planning of the land use. This paper presents susceptibility maps to mass movements, based on morphometric variables natural and environmental...
Análise qualitativa e comparativa das variáveis morfométricas da região serrana...
Carmo, Alcione Moreira do; Souto, Michael Vandesteen Silva; Duarte, Cynthia RomarizWith the advancement of computer technology in recent decades came along the advancement of digital data and the ease of obtaining this information gathering from the World Wide Web. Digital models of ground elevations, for example, which generated data of complex and difficult access some years ago, are now available freely on the internet in different resolutions and accuracies for the entire globe. Many work...
Avaliação da acurácia dos ortomosaicos e modelos digitais do terreno gerados pe...
Silva, Cristiano Alves da; Souto, Michael Vandesteen Silva; Duarte, Cynthia Romariz; Bicho, Cristina Prando; Sabadia, José Antonio BeltrãoThis present paper aims to demonstrate the evaluation of the accuracy of orthomosaics and Digital Terrain Models (DTM) generated by the Unmanned Aerial Vehicle (UAV) developed by the University of Brasilia (UnB) in partnership with the National Department of Mineral Production (DNPM). This study evaluated the orthomosaic and the MDT from a pile of laminated limestone exploitation tailings in the Santana do Cari...
Análise multitemporal da dinâmica da paisagem para os municípios de Barroquinha...
Lira, Maria Valdete; Souto, Michael Vandesteen Silva; Duarte, Cynthia RomarizThe change in the landscape is caused by the natural processes resulting from the interaction of surface agents with the environment, where these dynamics can take up to thousands of years to occur, but when anthropic actions interact with the environment, landscape dynamics can occur in a way accelerated, modifying the landscape in short time span and covering large areas. The interventions that the man submit...
Imagens Sentinel-2 aplicadas na caracterização geomorfológica de ambientes cost...
Silva Neto, Cláudio Ângelo da; Maia, Allison de Oliveira; Miranda, Mateus de Paula; Duarte, Cynthia Romariz; Souto, Michael Vandesteen SilvaCoastal regions are dynamic environments formed from the joint action of wind, terrestrial, oceanic & atmospheric processes. Remote sensing, coupled with digital image processing & geographic information systems, has been used in studies related to the coastal environments. The use of these geotechnologies finds it difficult to individualize geomorphological compartments of the coast due to the compositional ho...
Drone na auditoria ambiental: potencialidades e aplicações
Silva, Cristiano Alves da; Duarte, Cynthia Romariz; Sabadia, José Antonio Beltrão; Souto, Michael Vandesteen SilvaRemotely Aircrafts (RA), popularly known as Drones, are capable tools to generate highly accurate remote sensing products with a great potential perspective for use in the Environmental Audit process, performing previously exclusive tasks of manned aircrafts. However, because it is a relatively recent technology, it is justiied the need to consider the applicability of its use in environmental studies. The purp...
Short-time analysis of shoreline based on RapidEye satellite images in the term...
Duarte, Cynthia Romariz; Miranda, Fernando Pellon de; Landau, Luiz; Souto, Michael Vandesteen Silva; Sabadia, José Antonio BeltrãoCoastal environments are highly dynamic and sensitive to interference and variations caused by the numerous natural and anthropogenic agents. The northern coast of Northeastern Brazil has undergone intense erosion in recent years. However, the construction of the Pecém Port modified the beach and shoreline features differently from the adjacent areas. This article describes using remote-sensing images integrate...
Principal component analysis and morphostructural characterization of a portion...
Duarte, Cynthia Romariz; Cordeiro, Elicius Feijó; Costa, José Higor Batista Araújo da; Sabadia, José Antonio Beltrão; Salgueiro, Ana RitaThis study used Landsat 5 Thematic Mapper (5-TM) images in the morphostructural characterization of the shallow continental shelf of the eastern coast of Ceará (CE), in the Jaguaribe river mouth. The dam built near the river mouth to transpose the water towards Fortaleza, CE, ensures good water transparency since little of the river-carried sediment reaches the sea. The used image was captured on date and time ...
Caracterização dos setores erosivos e deposicionais da linha de costa de Icapuí...
Silva Neto, Cláudio Ângelo da; Duarte, Cynthia Romariz; Souto, Michael Vandesteen Silva; Freire, Eduardo Viana; Sousa, Willamys Rangel Nunes deThe importance of coastal zones implies the need for continuous studies related to the monitoring of their processes. In this context, the shoreline represents one of the most dynamic features, and its variability is an indicator of erosion or coastal deposition. In order to evaluate the changing trends of the coast of the Icapuí city, located in the far east of the state of Ceará, this work involved the use of...
Variação da linha de costa no litoral cearense (1984-2018)
Silva, Maykon Targino da; Lopes, Débora Nogueira; Rebouças, Iago Silva; Freires, Eduardo Viana; Silva Neto, Cláudio Ângelo da; Duarte, Cynthia RomarizCoastal erosion occurs in several parts of the world. Sometimes, it destroys structures close to the shoreline causing economic damage. In the state of Ceará, Brazil, there are stretches with retrogradation. A classic example is from the area near the Mucuripe harbor (Fortaleza). From this context, the objective of this paper was to analyze the evolution of the State of Ceará shoreline between 1984 and 2018. To...