Consulta: subjectFacets:"Geomorphology"
Registros recuperados: 64
Data/hora: 01/06/2024 16:11:17

Diagnostico geomorfológico en cuencas hidrográficas precordilleranas: Río de la Ciénaga. Departamento Zonda, Provincia de San Juan, República Argentina
Provedor de dados: 25
Autores: Montenegro, Elvira Aideé Suarez.
The results exposed in the present work are framed in the activities of Internal Scholarship of CONICET that is developed in the Institute of Geography Applied in National San Juan University. The General Objective of the investigation work was based on application of the systemic approach, for the analysis of natural systems of “precordilleranas” hydrographic river basins. In this case it was chosen like object focused to the geomorphologic object. Satellite Techniques, Manual and Digital Mapping with ITC Symbol, Direct Wide Observations and SIG with Software Ilwis 3.3 Were used . It was selected as study unit the area drained by the river, that is located in Central Precordillera of San Juan Province, in virtue to fort influences new tectonics,...
Tipo: Article
Palavras-chave: Natural System; Geomorphology; Diagnosis.
Ano: 2007
URL: http://hdl.handle.net/2315/114

Clasificación y caracterización de suelos de Tabasco con base en el enfoque geomorfopedológico.
Provedor de dados: 32
Autores: Jiménez Ramírez, Raquel.
Los estudios geomorfopedológicos delimitan las formas del relieve de una región partiendo de su estructura y morfogénesis, y con frecuencia las geoformas determinan la diferenciación de los suelos. Por ello el objetivo de este trabajo fue actualizar la clasificación y caracterización de suelos a escala 1:250 000 partiendo desde la geomorfología, podología y finalizar en geomorfopedología del estado de Tabasco. Se realizó la recopilación de estudios recientes sobre relieve y suelos del estado de Tabasco utilizando mapas del Sistema Geológico Mexicano a escala 1: 250 000, mapas topográficos del INEGI para precisar bordes de las terrazas y zonas cársticas, para separar las alturas menores y mayores de 200 msnm; el MDE del INEGI para verificar linderos de los...
Palavras-chave: Geomorfología; Relieve; Suelos; Geomorphology; Relief; Soil; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2213

Ecology, Planning, and River Management in the United States: Some Historical Reflections
Provedor de dados: 7
Autores: Reuss, Martin; U.S. Army Corps of Engineers; Martin.A.Reuss@HQ02.USACE.ARMY.MIL.
River ecologists are also river-basin planners. However, their role in planning has developed slowly over the decades since the beginning of the 20th century. Three major factors explain this phenomenon. First, ecologists focused on plant and animal communities rather than on  broader policy issues related to land settlement and water development. Second, the federal government, and most state and local governments as well, used mainly economic criteria to justify projects. Intangible benefits, including the value of species or an aesthetically pleasing landscape, drew relatively little attention. Third, the public generally favored development, especially during the Great Depression of the 1930s. Only after World War II did the public's position shift in...
Tipo: Peer-Reviewed Reports
Palavras-chave: History; Ecology; River basins; Water management; Planning; Benefit-cost analysis; Multiobjective planning; River restoration; Geomorphology.
Ano: 2005

Modeling Forest Succession among Ecological Land Units in Northern Minnesota
Provedor de dados: 7
Autores: Host, George; University of Minnesota - Duluth; ghost@sage.nrri.umn.edu; Pastor, John; Minnesota Department of Natural Resources; jpastor@nrri.umn.edu.
Field and modeling studies were used to quantify potential successional pathways among fine-scale ecological classification units within two geomorphic regions of north-central Minnesota. Soil and overstory data were collected on plots stratified across low-relief ground moraines and undulating sand dunes. Each geomorphic feature was sampled across gradients of topography or soil texture. Overstory conditions were sampled using five variable-radius point samples per plot; soil samples were analyzed for carbon and nitrogen content. Climatic, forest composition, and soil data were used to parameterize the sample plots for use with LINKAGES, a forest growth model that simulates changes in composition and soil characteristics over time. Forest composition and...
Tipo: Peer-Reviewed Reports
Palavras-chave: Climatology; Dunes; Ecological classification systems (ECS); Forest growth model; Forest management; Forest; Succession; Geomorphology; LINKAGES; Moraines; Northern Minnesota; Overstory composition; Overstory composition; Soil properties.
Ano: 1998

Caracterização de ambientes na Chapada dos Veadeiros/Vale do Rio Paraná: contribuição para a classificação brasileira de solos.
Provedor de dados: 14
Autores: CORREIA, J. R.; LOBO-BURLE, M.; CALDERANO, S. B.; SPERA, S. T.; GOMES, I. A.; SANTOS, R. D. dos; CAMPOS, J. E. G.; SILVA JUNIOR, M. C. da; NASCIMENTO, R. de O.; MINELA, G.; REATTO, A.; DUARTE, M. N.
bitstream/CPAC-2009/24674/1/doc_47.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Soil chemicophysical properties.; Cerrado; Classificação do Solo; Física do Solo; Geomorfologia; Geologia; Mineralogia; Perfil do Solo; Química do Solo; Solo; Vegetação.; Geomorphology; Geology; Mineralogical soil types; Mineralogy; Soil profiles; Soil classification; Soil; Vegetation.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/559147

Compartimentação geomorfológica e suas relações com solos da Bacia do Alto Rio Preto, GO.
Provedor de dados: 14
Autores: LIMA, L. A. de S.; MARTINS, E. de S.; REATTO, A.; CASTRO, K. B. de; SOUZA, V. V. de; CARVALHO JUNIOR, O. A. de.
Este trabalho apresenta um estudo da relação entre as formas de relevo e a organização pedológica na Bacia do Alto Rio Preto, GO.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Paisagem; Geoprocessamento; Morfometria; Integração temática; Topossequência.; Solo; Geomorfologia; Soil; Geomorphology.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/859794

Caracterização geomorfológica do município de Luís Eduardo Magalhães, oeste baiano, escala 1:100.000.
Provedor de dados: 14
Autores: CASTRO, K. B. DE; MARTINS, E. de S.; GOMES, M. P.; REATTO, A.; LOPES, C. A.; PASSO, D. P.; LIMA, L. A. DE S.; CARDOSO, W. DOS S.; CARVALHO JUNIOR, O. A.; GOMES, R. A. T.
Este trabalho apresenta a caracterização geomorfológica do município de Luís Eduardo Magalhães, BA, na escala 1:100.000. A metodologia utilizada para o mapeamento geomorfológico foi baseada no uso de imagens de altimetria Shuttlle Radas Topografhy Mission (SRTM), de técnicas de geoprocessamento e de trabalhos de campo. A geomorfologia foi caracterizada em três níveis taxonômicos: 1. nível: domínio morfoestrutural, composto pela cobertura sedimentar São Franciscana (100%); 2. nível: regiões geomorfológicas compostas pelas chapadas do São Francisco (28,7%) e 3. nível: unidades geomorfológicas, formado pelas unidades chapadas intermediárias (42%), topos (26%), frente de recuo erosivo (22%), planície intraplanáltica (7%) e veredas (3%). O mapeamento...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Bacia do São Francisco; Landscape; SRTM data; Geotechnology; São Francisco Basin.; Geomorfologia; Mapa; Relevo.; Brazil; Geomorphology; Topography.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/891209

Comparação entre diferentes interpoladores na delimitação de bacias hidrográficas.
Provedor de dados: 14
Autores: REDIVO, A. L.; GUIMARÃES, R. F.; RAMOS, V. M.; CARVALHO JÚNIOR, O. A. de; MARTINS, E. de S.
ABSTRACT: The morphometric parameters are of fundamental importance for the good operation of models, among them, the area of the basin to amount determined for each pixel stands out for releases use in hydrologic models used for the definition of saturation areas in the landscape and predictive models of mass movements. In this work three different ways are compared of obtaining the delimitation of hydrologic basins starting from a digital elevation model: a) Directly of DEM without any treatment type, being used of different interpolators types; b) Starting from the elimination of the depressions inherent of the interpolator that doesn't correspond to the nature and; c) Making DEM being used of the corresponding vectors the drainage net and water bodies,...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Modelo digital; Hidrogeology; Digital model.; Bacia Hidrográfica; Hidrogeologia.; Geomorfologia; Geomorphology; Watersheds.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/563076

Geomorfologia da margem direita do córrego Divisa, Bacia do São Bartolomeu - DF, escala 1:10.000.
Provedor de dados: 14
Autores: MARTINS, E. de S.; REATTO, A.; FARIAS, M. R.; SILVA, A. V. da; BLOISE, G. L. F.; CARDOSO, E. A.; SPERA, S. T.; CARVALHO JÚNIOR, O. A de; GUIMARÃES, R. F.
RESUMO: Este trabalho teve como objetivo caracterizar e mapear a geomorfologia da margem direita do Córrego Divisa, na Bacia do Rio São Bartolomeu, DF em escala 1:10.000. O mapa geomorfológico foi confeccionado a partir do cruzamento dos planos de informação de altimetria, de declividade e de hidrografia em Sistema de Informação Geográfica. O trabalho de campo permitiu o relacionamento entre os compartimentos geomorfológicos e outras variáveis ambientais. Foram caracterizados cinco compartimentos geomorfológicos: o compartimento I relaciona-se com o topo convexo e relevo plano; o II relaciona-se às vertentes convexo-côncavas e relevo ondulado; o III, com vertentes convexas e relevo plano a suave-ondulado; e o V, com planície e o relevo plano. O relevo...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Paisagem; Relief; Wathersheds; Landscape.; Bacia Hidrográfica; Geomorfologia; Sistema de Informação Geográfica; Solo.; Geomorphology; Geographic information systems; Soil.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/559608

Levantamento preliminar de solos do município de Correntina - BA, escala 1: 100.000 (2009).
Provedor de dados: 14
Autores: LIMA, L. A. DE S.; MARTINS, E. de S.; BRAGA, A. R. dos S.; CASTRO, K. B. de; PASSO, D. P.; CARDOSO, W. dos S.; SANTANA, O. A.; CARVALHO JÚNIOR, O. A. de; GOMES, R. A. T.
bitstream/item/78239/1/p2009-070.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Solos; Geoprocessamento; Landscape; SRTM data; Geotechnology; Mapping; Geoprocessing.; Cartografia; Geomorfologia.; Brazil; Geomorphology; Topography.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/711886

Domínios hidrogeológicos da margem direita do Córrego Divisa, Bacia do São Bartolomeu-DF, escala 1:10.000.
Provedor de dados: 14
Autores: MARTINS, E. de S.; REATTO, A.; FARIAS, M. R.; VALVERDE, A. A.; BLOISE, G. L. F.; CARDOSO, E. A.; SPERA, S. T.; CARVALHO JÚNIOR, O. A. de; GUIMARÃES, R. F.
Resumo: Este trabalho apresenta os dados cartográficos de hidrogeologia da margem direita do Córrego da Divisa, Bacia do São Bartolomeu, DF. Foram caracterizados dois tipos de aquíferos; os aquíferos fissurais, em filtros, estão associados à classe de solo CAMBISSOLO HÁPLICO; e os porosos, em latossolos, estão associados às classes de solo LATOSSOLO VERMELHO e LATOSSOLO VEREMLHO AMARELO. Os aquíferos fissurais estão associados ao Sistema Canastra, Subsistema F, com uma tendência de apresentar pequena capacidade e baixa recarga; os porosos estão associados ao Sistema P3, que apresentam elevada capacidade de recarga, mas são pequenos em volume. Abstract: This work presents the hydrogeology cartographic data of the right margin of the Stream Divisa, basin of...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: ECOSOL210; Geormorfologia; Aquifero; Distrito Federal; Brasil.; Bacia Hidrográfica; Hidrogeologia; Solo.; Brazil; Geomorphology; Hydrogeology; Soil; Watersheds.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567947

Unidades de paisagem do Distrito Federal, escala 1:100.000.
Provedor de dados: 14
Autores: MARTINS, E. de S.; REATTO, A.; CARVALHO JÚNIOR, O. A. de; GUIMARÃES, R. F.
ABSTRACT: The paper presents the landscape units of Distrito Federal, scale 1:100.000. They were defined 18 units starting from the litho-structural, landforms and soil organization. The metamorphic rocks with psamo-pelitic composition tend to occur in the form of residual leveling surfaces. The pelitic rocks also present residual leveling surfaces, but mainly as dissected relief. The group of rocks with limestone composition happens in dissected relief and with larger of deepen drainage degree.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Mapeamento; Mapping.; Cerrado; Geologia; Geomorfologia; Reconhecimento do Solo.; Geology; Geomorphology; Soil surveys.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569489

Guia de campo da XII Reunião Brasileira de Classificação e Correlação de Solos: RCC de Rondônia.
Provedor de dados: 14
Autores: LUMBRERAS, J. F.; SILVA, L. M. da; ANJOS, L. H. C. dos; OLIVEIRA, V. A. de; WADT, P. G. S.; PEREIRA, M. G.; DELARMELINDA-HONORÉ, E. A.; BURITY, K. T. L.
A XII Reunião Brasileira de Classificação e Correlação de Solos e o resgate histórico das RCCs. Uma breve contextualização sobre a ocupação e colonização do estado de Rondônia. Geologia do estado de Rondônia. Análise integrada das paisagens do estado de Rondônia. Vegetação do estado de Rondônia. Solos da XII Reunião Brasileira de Classificação e Correlação de Solos: RCC de Rondônia. Mineralogia da fração argila dos solos da XII Reunião Brasileira de Classificação e Correlação de Solos - estado de Rondônia. Micromorfologia dos perfis da XII RCC. A susceptibilidade magnética e a condutividade elétrica aparente em amostras de solos da XII Reunião Brasileira de Classificação e Correlação de Solos - RCC de Rondônia. Atributos químicos e granulometria dos solos...
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Classificação do Solo; Gênese do Solo; Geologia; Geomorfologia; Mineralogia; Aptidão Agrícola; Soil classification; Soil formation; Geology; Geomorphology; Mineralogy; Land suitability.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1112765

Mudanças hidrológicas no pantanal associadas a processos erosivos e tectônicos na Bacia do Rio Taquari, MS.
Provedor de dados: 14
Autores: SOUZA, O. C. de; ARAÚJO, M. R.; USSAMI, N.; FISSEHA, S.; KONZEN, L.
Nas últimas décadas, grandes áreas de Cerrados de Mato Grosso do Sul foram convertidas em sistemas produtivos agrícolas e pastoris, sem a devida observância do potencial de utilização das terras. Com o tempo, algumas regiões, como a Bacia do Rio Taquari, passaram a apresentar problemas ambientais de grandes proporções em resposta a processos erosivos, cuja evolução progressiva sugere ineficiência dos sistemas de manejo visando à conservação ambiental. Os processos erosivos, estabelecidos na região de planaltos da alta Bacia do Rio Taquari, manifestam-se em escalas temporal e espacial ainda não inteiramente compreendidas e consideradas. Há falta de estudos sobre a erosão fluvial, principalmente em cabeceiras de drenagem, que acumulam grandes quantidades de...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bacia do Rio Taquari; Mato Grosso do Sul; Brasil; Erosion; Brazilian savannas.; Cerrado; Erosão; Geomorfologia; Hidrologia; Geologia; Sensoriamento Remoto.; Pantanal; Geology; Brazil; Geomorphology; Hydrology; Remote sensing.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/318826

Mapeamento geomorfológico da bacia hidrográfica do Alto Rio Preto a partir do processamento digital de imagem SRTM.
Provedor de dados: 14
Autores: LIMA, L. A. DE S.; MARTINS, E. de S.; BRAGA, A. R. dos S.; CASTRO, K. B. DE; SOUZA, V. V. DE.
bitstream/item/78262/1/p2009-074.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Geoprocessamento; Landscape; SRTM data; Geotechnology; Mapping; Geoprocessing; Watershed.; Bacia Hidrográfica; Cartografia.; Brazil; Geomorphology; Topography.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/711888

Considerações sobre os solos da sub-região da Nhecolândia, Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: CUNHA, N. G. da.
A Nhecolandia e uma das sub-regioes que compoem o Pantanal Mato Grossense. E totalmente constituida por sedimentos arenosos finos (95%), em deposicao pelo rio Taquari, desde o inicio do Periodo Quaternario, formando um leque aluvial. A sua superficie irregular, composta por um mesorelevo movimentado, conserva ainda a sua configuracao tipicamente aluvial, onde os cordoes arenosos (diques marginais), com cobertura vegetal de cerrado, leitos fosseis obstruidos (campos limpos e vazantes), com vegetacao de gramineas e pequenas lagoas (baias) sao uma sucessao constante. Os podzois hidromorficos -spodic psammaquent e aeric entic sideraquod - constituem os solos mais pobres e suscetiveis a lixiviacao, principalmente se quebrado o equilibrio atual com o uso. Nas...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Mato Grosso do Sul; Terras agricolas; Classificacao; Nhecolandia.; Geomorfologia; Solo.; Pantanal; Geomorphology; Soil.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787697

Anais...
Provedor de dados: 14
Autores: SIMPOSIO SOBRE RECURSOS NATURAIS E SOCIO-ECONOMICOS DO PANTANAL, 1., 1984, Corumba.
A publicacao do evento apresenta temas sobre recursos naturais, mostrando a pesquisa desenvolvida no Pantanal, enfocando o sistema climatico, hidrologia, aspectos geologicos e geomorfologicos, solos, vegetacao, flora, fauna, os problemas e perspectivas socio-economicos, propostas de politicas de desenvolvimento da regiao. Sumario - O sistema climatico do Pantanal: compreensao do sistema a definicao de prioridades de pesquisa climatologica. Condicoes climaticas para a regiao do Pantanal Mato-Grossense. Hidrologia da Bacia do Alto Paraguai. A dinamica das inundacoes no Pantanal. Aspectos geologicos do Pantanal Mato-Grossense e de sua area de influencia. Contribuicao da geomorfologia para o conhecimento e valorizacao do Pantanal. Solos do Pantanal...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Congresso; Mato Grosso do Sul; Recurso socio-economico; Recursos hidricos; Natural resource; Socio-economic resource; River; Congress.; Climatologia; Fauna; Flora; Geomorfologia; Geologia; Recurso Natural; Solo; Vegetação.; Brazil; Pantanal; Climatology; Geomorphology; Geology; Soil; Vegetation.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787689

Compartimentação geomorfológica do Parque Nacional da Chapada dos Veadeiros baseada em técnicas de geoprocessamento.
Provedor de dados: 14
Autores: CARVALHO JÚNIOR, O. A. de; MARTINS, E. de S.; GUIMARÃES, R. F.; CARVALHO, A. P. F. de.
ABSTRACT: The necessity of creating a main plan for national parks is necessary for the technique's improvement for a better understanding of the environmental factors thar interfere in the conservation of these units. In this context, image processing techniques are important tools in this characterization. In this paper, we describe the use of the terrain Digital Elevation Model (DEM) as a tool for the description of the geological and geomorphological's characteristics from the Chapada dos Veadeiros National park, that has 60,000 ha and it is located in Cavalcante town and Alto Paraíso de Goiás town (GO). By the visual analysis of the DEM is very clear the relief forms that furnish a strong aid to the understanding of the distribuition of the...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Geoprocessamento; Mapeamento; Brasil; Geoprocessing; Mapping.; Cerrado; Geomorfologia; Sensoriamento Remoto; Solo.; Sistema de Informação Geográfica; Brazil; Geomorphology; Geographic information systems; Remote sensing; Soil.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568005

Mapeamento morfologico em areas do Tropico Semi-Árido.
Provedor de dados: 14
Autores: MANTOVANI, L. E.; RICHE, G. R.
Foram selecionadas diferentes areas do tropico semi-arido para fins de cartografia morfopedologica visando apoiar operacoes de pesquisa e extensao rural. A tecnica empregada utiliza interpretacao detalhada em fotografias aereas ou mosaicos de radar feita apos um reconhecimento previo das zonas mapeadas.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Natural resource.; Cartografia; Extensão Rural; Geomorfologia; Pesquisa; Recurso Natural.; Diffusion; Geomorphology; Cartography; Research.; Natural resources.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132504

Morfometria como suporte para elaboração de mapas pedológicos: I. Bacias hidrográficas assimétricas.
Provedor de dados: 14
Autores: HERMUCHE, P. M.; GUIMARÃES, R. F.; CARVALHO, A. P. F. de; MARTINS, E. de S.; DRUCK, S.; CARVALHO JÚNIOR, O. A. de; SANTOS, N. B. F. dos; REATTO, A.
The present work aim to develop a methodology, using digital images processing with morphometric data to subsidize the soil mapping, in order to guide the field work becoming survey faster, better precision and cheaper. Initially the Digital Elevation Model was made (DEM), for TOPOGRID method of the ArcInfo program, using 37 topographical letters in scale 1:10.000 the Jardim river basin. From the DEM the morphometric maps of the basin had been generated (slope, flow direction and contribution area), used to elaborate the color compositions and histograms analyses in order to allow the definition of soil pattern. After that was made the comparison with the soil map elaborated by Embrapa where could be conserved great similarity of the soil units.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Mapeamento; Solo: Classificação do solo; Morfometria; Mapping; Soil sciences.; Bacia Hidrográfica; Geomorfologia; Pedologia; Reconhecimento do Solo.; Geomorphology; Morphometry; Soil classification; Soil surveys; Watersheds.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567988

Caracterização pedogeomorfológica de microbacia do Município de Igaratá-SP.
Provedor de dados: 14
Autores: PEREIRA, L. C.; GOMES, M. A. F.; SOUZA, M. D. de.
O propósito deste trabalho foi realizar a caracterização dos compartimentos ambientais - solo, geologia e geomorfologia, ou seja, fazer uma abordagem pedogeomorfológica da microbacia, fundamental nos estudos de uso e ocupação de áreas, sobretudo de solos rasos e rochas bastante alteradas, situados em declividades mais acentuadas, ambientes estes mais suscetíveis a impactos ambientais.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Microbacia; Solo; Geomorfologia; Subwatersheds; Soil; Geomorphology.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1075803

Guia de campo da XIII Reunião Brasileira de Classificação e Correlação de Solos: RCC do Maranhão.
Provedor de dados: 14
Autores: SILVA, M. B. e; LUMBRERAS, J. F.; COELHO, M. R.; OLIVEIRA, V. A. de.
A XIII Reunião Brasileira de Classificação e Correlação de Solos - RCC do Maranhão; Geologia do estado do Maranhão; Análise integrada das paisagens do estado do Maranhão; Caracterização climática do estado do Maranhão; Caracterização de um perfil de solo e de cerâmicas arqueológicas do Sambaqui de Panaquatira, município de São José de Ribamar, MA; Solos da XIII Reunião Brasileira de Classificação e Correlação de Solos (RCC do Maranhão); Atributos químicos e granulometria dos solos da XIII Reunião Brasileira de Classificação e Correlação de Solos: um enfoque pedológico; Micromorfologia de solos da XIII Reunião Brasileira de Classificação e Correlação de Solos; Mineralogia da fração argila dos solos da XIII Reunião Brasileira de Classificação e Correlação de...
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Classificação do Solo; Gênese do Solo; Geomorfologia; Geologia; Mineralogia; Análise do Solo; Clima; Soil classification; Soil profiles; Geomorphology; Geology; Soil mineralogy; Soil micromorphology; Soil analysis; Climate.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1127220

Evolution of Late Oligocene - Early Miocene attached and isolated carbonate platforms in a volcanic ridge context (Maldives type), Yadana field, offshore Myanmar
Provedor de dados: 5
Autores: Paumard, Victorien; Zuckmeyer, Eric; Boichard, Robert; Jorry, Stephan; Bourget, Julien; Borgomano, Jean; Maurin, Thomas; Ferry, Jean-noel.
This study investigates the stratigraphic evolution of the Late Oligocene - Early Miocene carbonate platforms of the Yadana area (offshore Myanmar). Well data, regional 2D and local 3D seismic surveys allow the identification of three shallow-water carbonate platforms (Yadana, 3DF and 3DE) showing various morphologic and stratigraphic patterns influenced by the presence of a paleohigh. The identification of seven seismic sequences in the Yadana area constrains the stratigraphic evolution in three stages: (1) development of aggrading attached and isolated platforms during the Chattian; (2) a period of platform emersion during the Oligocene - Miocene transition; (3) drowning of the smaller buildup (3DE) associated with km-scale backstepping on the large...
Tipo: Text
Palavras-chave: Yadana; Carbonate platforms; Oligocene; Miocene; Seismic stratigraphy; Geomorphology; Paleogeography; Control parameters; Burman margin.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00364/47483/47502.pdf

Seafloor Characteristics in the Azores Region (North Atlantic)
Provedor de dados: 5
Autores: Peran, Antonio D.; Pham, Christopher K.; Amorim, Patricia; Cardigos, Frederico; Tempera, Fernando; Morato, Telmo.
Tipo: Text
Palavras-chave: Azores; Seafloor characteristics; Bathymetry; Deep sea; Geomorphology; GIS dataset.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00590/70195/68219.pdf

La géomorphologie des fonds marins et la présence d’hydrates de gaz contrôlent les émissions de gaz dans la Mer Noire au large de la Roumanie
Provedor de dados: 5
Autores: Riboulot, Vincent; Cattaneo, Antonio; Scalabrin, Carla; Gaillot, Arnaud; Jouet, Gwenael; Ballas, Gregory; Marsset, Tania; Garziglia, Sebastien; Ker, Stephan.
The Romanian sector of the Black Sea deserves attention because the Danube deep-sea fan is one of the largest sediment depositional systems worldwide and is considered the world's most isolated sea, the largest anoxic water body on the planet and a unique energy-rich sea. Due to the high sediment accumulation rate, presence of organic matter and anoxic conditions, the Black sea sediments offshore the Danube delta is rich in gas and thus shows Bottom Simulating Reflectors (BSR). The cartography of the BSR over the last 20 years, exhibits its widespread occurrence, indicative of extensive development of hydrate accumulations and a huge gas hydrate potential. By combining old and new datasets acquired in 2015 during the GHASS expedition, we performed a...
Tipo: Text
Palavras-chave: Hydrates de gaz; Gaz libre; Panaches de gaz; BSR; Mer Noire; Géomorphologie; Gas hydrates; Free gas; Gas flares; BSR; Black Sea; Geomorphology.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00407/51860/53914.pdf

The western part of the Gulf of Cadiz: contour currents and turbidity currents interactions
Provedor de dados: 5
Autores: Mulder, Thierry; Lecroart, P; Hanquiez, V; Marches, E; Gonthier, E; Guedes, J; Thiebot, E; Jaaidi, B; Kenyon, N; Voisset, Michel; Perez, C; Sayago, M; Fuchey, Y; Bujan, S.
Recent multibeam bathymetry and acoustic imagery data provide a new understanding of the morphology of the western part of the Gulf of Cadiz. The gulf is under the influence of a strong current, the Mediterranean Outflow Water (MOW). This current is at the origin of the construction of the giant Contourite Depositional System. Canyons and valleys with erosive flanks are observed. Only the Portimao Canyon is presently connected to the continental shelf. Channels occur on the continental shelf but are presently disconnected from the deeper network of channels and valleys. Slumps are localized in steep slope areas. They are caused by oversteepening and overloading, sometimes probably associated with earthquake activity. Slumps transform sharply into turbidity...
Tipo: Text
Palavras-chave: Contour current; Interaction; Turbidity current; Geomorphology; Gulf of Cadiz.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1718.pdf

The Var turbidite system (Ligurian Sea, northwestern Mediterranean) - morphology, sediment supply, construction of turbidite levee and sediment waves: implications for hydrocarbon reservoirs
Provedor de dados: 5
Autores: Migeon, Sébastien; Mulder, Thierry; Savoye, Bruno; Sage, Françoise.
The Var turbidite system is a small sandy system located in the Ligurian Basin. It was deposited during the Pliocene-Quaternary in a flat-floored basin formed during the Messinian salinity crisis. The system was fed through time by the Var and Paillon canyons that connect directly to the Var and Paillon rivers. It is still active during the present sea-level highstand. Two main mechanisms are responsible for gravity-flow triggering in the Var turbidite system: (1) mass-wasting events affect mainly the upper part of the continental slope, in areas where volumes of fresh sediment delivered by rivers are highest, and result from the under-consolidation state of slope sediments and earthquakes, and (2) high-magnitude river floods resulting from melting of snow...
Tipo: Text
Palavras-chave: Geomorphology; Sediment waves; Turbidity; Mediterranean sea; Ligurian basin.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/publication-2258.pdf

Atlas thématique de l'environnement marin en baie de Saint-Brieuc (Côtes-d'Armor)
Provedor de dados: 5
Autores: Augris, Claude; Hamon, Dominique.
This atlas presents in a synthetic form the hydrodynamical, geological and biological characteristics of one of the most studied region of the French littoral. Geologic and geophysical data of the Saint-Brieuc Bay show that the deep basement consists of pre-palaeozoic or palaeozoic sedimentary series in the centre of the Bay, whereas metamorphic and magmatic formations are dominant in coastal regions. The location of superficial sediments in the Bay, is mainly due to marine currents. A granulometric gradient, from very fine to coarse sediments, appears in two directions: from the coast towards the high sea, and from the west to the east. Rocky substrates disrupt the sediment distribution, with, most of the time, a concentration of coarse sediments near the...
Tipo: Text
Palavras-chave: Atlas; Bathymetry; Bottom topography; Commercial species; Geomorphology; Hydrodynamics; Marine resources; Sediment analysis; Sedimentary basins; Zoobenthos.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00031/14246/11527.pdf

Is the machecoul fault the source of the ∼M6 1799 Vendée earthquake (France)?
Provedor de dados: 5
Autores: Kaub, C; Geoffroy, Laurent; Bollinger, L; Perrot, Julie; Le Roy, Pascal; Authemayou, C.
The ∼M6 1799 Bouin earthquake is considered as one of the largest earthquakes to have struck Western France. However, the seismogenic source potentially responsible for this event remain marginally documented. We present results from a focused offshore-onshore multidisciplinary survey in its meizoseismal area in order to identify the fault segments that potentially ruptured during this earthquake. Based on macroseismic data and the geology, we focused our study on the so-called Machecoul Fault as a potential source of the 1799 Bouin event. Our survey includes extensive high-resolution seismic reflection, high resolution bathymetry and a one-year seismological survey. These data were combined with existing topography, onshore gravity data and drill data to...
Tipo: Text
Palavras-chave: Intra-plate processes; Seismicity and tectonics; Marine geophysics; Geomorphology; Europe.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00682/79394/81927.pdf

Variations in axial morphology, segmentation, and seafloor roughness along the Pacific-Antarctic Ridge between 56 degrees S and 66 degrees S
Provedor de dados: 5
Autores: Ondreas, Helene; Aslanian, Daniel; Geli, Louis; Olivet, Jean-louis; Briais, Anne.
The spreading rate at the Pacific-Antarctic Ridge (PAR) increases rapidly from 54 mm/yr near Pitman Fracture Zone (FZ) up to 76 mm/yr near Udintsev FZ, resulting in three domains of axial morphology: an axial valley south of Pitman FZ, an axial high north of Saint Exupery FZ, and in between, the transitional domain extends over 650 km. It comprises sections of ridge with an axial valley or an axial high and generally displays a very low cross-sectional relief. It is also characterized by two propagating rifts. Two domains of different seafloor roughness appear south of Udintsev FZ: east of 157 degreesW these two domains are separated by a 1000-km V-shaped boundary. West of 157 degreesW, the boundary approximately coincides with Chron 3a or Chron 4. The...
Tipo: Text
Palavras-chave: Spreading; Segmentation; Geomorphology; Seafloor; Ridge.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/publication-438.pdf

Volcanoes and climate: the triggering of preboreal Jökulhlaups in Iceland
Provedor de dados: 5
Autores: Van Vliet-lanoë, Brigitte; Knudsen, Oskar; Guðmundsson, Agust; Guillou, Hervé; Chazot, Gilles; Langlade, Jessica; Liorzou, Celine; Nonnotte, Philippe.
The Early Holocene (12–8.2 cal ka) deglaciation and pulsed warming was associated in Iceland with two major generations of jökulhlaups around the Vatna ice-cap (Vatnajökull), at ca 11.4–11.2 cal ka and ca 10.4–9.9 cal ka, and major tephra emissions from the Grímsvötn and Bárðarbunga subglacial volcanoes. The earliest flood events were recorded inland during the Middle Younger Dryas and their deposits were overlain by the Early Preboreal Vedde Ash (11.8 cal ka). The first Holocene flood events (ca 11.4–11.2 cal ka) are issued from a glacial advance. The second, and major, set of floods was partly driven by the Erdalen cold events and advances (10.1–9.7 10Be ka) initially issued from the Bárðarbunga (10.4, 10.1–9.9 ka) and Grímsvötn volcanoes (Saksunarvatn...
Tipo: Text
Palavras-chave: Holocene; Deglaciation; Iceland; Geomorphology; Glacial; Flood; Sedimentology; Tephra; Glacio-isostatic rebound; Permafrost; Saksunarvatn event; Askja S.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00613/72489/74845.pdf

The evolution of a Holocene banner bank controlled by morphodynamics and structural setting of a macrotidal coast: Saint-Brieuc Bay (NW-EUROPE)
Provedor de dados: 5
Autores: Traoré, Kalil; Menier, David; Gensac, Erwan; Le Roy, Pascal; Lambert, Clément; Bessin, Paul; Pédoja, Kevin; Duperret, Anne; Le Gall, Romain.
The morphology and internal structure of the Horaine Bank (Bay of Saint-Brieuc, NW France) are described based on multibeam echosounder and high-resolution seismic datasets coupled with vibro-core data. The Horaine Bank shows large-scale bedforms in the lee of a submerged rocky shoal, which allowed defining it as a Banner Bank. The internal structure of the sandbank reveals four seismic units (U1–U4) on a Cambrian basement (U0). The basal unit U1 is interpreted as reworked lowstand fluvial sediments those infilled micro incised valleys during a rise in sea level. This unit is overlain by paleo-coastal barrier sand-spit (U2) whose development was controlled by swell in the context of a rapid rise in sea level. The successive prograding unit (U3) is...
Tipo: Text
Palavras-chave: Sand banks; Banner bank; Holocene climate; Geomorphology; Sea level rise; Tidal gyre.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00685/79660/82424.pdf

Late Pleistocene-Holocene history of a tectonically active segment of the continental margin (Nekor basin, Western Mediterranean, Morocco)
Provedor de dados: 5
Autores: Lafosse, M.; Gorini, C.; Le Roy, P.; Alonso, B.; D'Acremont, E.; Ercilla, G.; Rabineau, Marina; Vazquez, J. T.; Rabaute, A.; Ammar, A.
In active basins, tectonics can segment the continental shelf and control its stratigraphic architecture and physiography. Segmentation can explain the local evolution and morphology of the continental shelf because of sea-level variations, local tectonic segmentation and hydrodynamic processes. Here we investigate the tectonically active Morocco continental margin (southern Alboran Sea) using high-resolution seismic profiles and multibeam bathymetric data. The active faults bounding the transtensive Nekor basin triggered the segmentation of the shelf into three sectors showing different subsidence rates: a western sector corresponding to an extensive fault relay, a central sector corresponding to the subsiding Al-Hoceima Bay and an eastern sector...
Tipo: Text
Palavras-chave: Seismic stratigraphy; Active tectonic; Pleistocene; Continental shelf; Swath bathymetry; Geomorphology; Western Mediterranean.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00451/56232/57812.pdf

Bathymétrie du secteur atlantique du banc Porcupine (ouest de l'Irlande) au cap Finisterre (Espagne)
Provedor de dados: 5
Autores: Brenot, Roger; Berthois, Leopold.
Tipo: Text
Palavras-chave: Fishing; Bay of Biscay; Geomorphology; Continental shelf; Mapping; Bathymetry.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/1962/publication-2100.pdf

Genesis and Architecture of Sequences of Quaternary Coral Reef Terraces: Insights From Numerical Models
Provedor de dados: 5
Autores: Pastier, A-m; Husson, L.; Pedoja, K.; Bezos, A.; Authemayou, C.; Arias-ruiz, C.; Cahyarini, S. Y.
The variety of coral reefs morphologies highlights their sensitivities to several forcings; fossil reefs stack in sequences that are accordingly diverse. In order to understand their genesis and architectures, we devised a numerical approach, accounting for Quaternary sea level oscillations, vertical land motion, initial slope, wave erosion, and reef growth. We first test our model on the subsiding sequence of Hawaii and on the uplifting sequence of Wangi-Wangi (Sulawesi) that bears active barriers. We then construct a parametric study that we analyze based on a comprehensive yet compact description of sequences as barcodes, that depict the vertical distribution of a few geometrical characteristics (number, width, and height of the terraces and barriers)....
Tipo: Text
Palavras-chave: Coral reefs; Reef terraces; Numerical modeling; Geomorphology.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00637/74917/75771.pdf

A Relative Potential Erosion Detection (PED) model for the upper Buff Bay catchment, parish of Portland, Jamaica: A Geographical Information System application
Provedor de dados: 16
Autores: MacGillivray, C.M.I.; Donovan, S.K.
This research introduces a Geographical Information Systems (GIS) model that predicts the location and relative susceptibility of humid subtropical hillslopes to sheetwash erosion. The extent of the erosion was based on the conservation potential of the existing vegetation cover. This is an original deductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applicable physical and land use factors thought to be influential. These were climate (agroclimatic zones), topography (aspect and slope angle), soil (texture, drainage, depth, aggregation), vegetation cover and land use (tillage activity).   The study looked at surface erosion as a perceived problem in a post-colonial economy. The processes, cause and effect of...
Tipo: Article / Letter to the editor
Palavras-chave: Jamaica; Buff Bay; Geographical Information Systems; IDRISI; Geomorphology; Soil; Erosion; 38.42.
Ano: 2007
URL: http://www.repository.naturalis.nl/record/217419

Investigations of recent and fossil coral reefs in Eastern Indonesia (Snellius II expedition): a preliminary report
Provedor de dados: 16
Autores: Borel-Best, M.; Moll, H.; Boekschoten, G.J.
Some fifty years after the Snellius I expedition (1929-1930) a Dutch-Indonesian joint expedition is carried out (1984-1985) in the Eastern Indonesian archpelago. Based on two months (September -October 1984) of research at nine different reef localities, a first report will be presented on the general morphology, composition and condition of recent and fossil reefs of these areas. The research areas that will be discussed are the following: Ambon: In the bay of Ambon fringing and patch reefs heavily damaged by silting up, caused by soi1. erosion on the island. North East Ambon an elevated reef from the old Pleistocene. Lucipara islands: Exposed very isolated atoll with some sand cays. Tukang Besi islands: Atoll reefs of Kaledupa. Binongko reef terraces;...
Tipo: Article in monograph or in proceedings
Palavras-chave: Reef geology; Geomorphology; ICRS5.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/663441

Geomorfología e hidrografía de los estuarios
Provedor de dados: 20
Autores: Piccolo, M.C.; Perillo, G.M.
Estuaries are coastal-water in which marine and freshwater environments interact. They respond to natural changes, but specially to anthropogenic factors. The definition, environmental factors and classification of estuaries are analyzed. A review is presented of the present status of knowledge on the geomorphology and hydrography of Argentine estuaries.
Tipo: Book Section
Palavras-chave: Estuaries; Estuarine dynamics; Coastal oceanography; Coastal waters; Geomorphology; Estuaries; Coastal waters; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1997
URL: http://hdl.handle.net/1834/1722

Geomorfología y procesos erosivos en la Costa Norte del Departamento de Córdoba, Caribe colombiano (Sector Paso Nuevo-Cristo Rey)
Provedor de dados: 20
Autores: Rangel-Buitrago, N.G.; Posada-Posada, B.O.
As a contribution to the implementation of the National Environmental Polices for the Sustainable Development of Oceanic Spaces and Coastal and Insular Zones of Colombia, the physical characterization of the  north littoral of Cordoba department (Paso Nuevo-Cristo Rey), was undertaken. The aim of doing it, was to determine which are the causes of the erosive processes that are present and to suggest solutions that help to reduce the vulnerability of the coastal populations of the area. In this area Tertiary sediments of fluvio-marine origin, are cropping fractured, weathered and slightly folded. The geomorphological characteristics show that the fluvio-marine terraces, which are limited by cliffs of up to 15 m of height, are the most represented unit and...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Waves on beaches; Erosion; Coastal zone; Erosion; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2651; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 2005
URL: http://hdl.handle.net/1834/1991

Contribución al conocimiento geomorfológico del Estrecho Bransfiel, Antártica
Provedor de dados: 20
Autores: Zurita, G.F.
Durante la I Expedición Ecuatoriana a la Antártica se registraron 272 millas de perfiles batimétricos en áreas específicas y 1.250 millas a lo largo de todo el trayecto de la investigación en el Estrecho Bransfiel. Una cordillera submarina con dirección general E. W. situada en el centro del estrecho, fue investigada por contraponerse a la tendencia general evolutiva SW-NE de las islas y de la Península Antártica; así mismo, un montículo submarino situado en la cuenca suroeste del estrecho fue investigado. La inexistencia de tales características fue evaluada desde el punto de vista geológico tectónico, concluyéndose que los datos obtenidos para la elaboración de las cartas referenciadas y tomadas en cuenta para el actual estudio son inexactos. Por otro...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Bathymetric charts; Antarctic zone; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1989
URL: http://hdl.handle.net/1834/3829

Geomorphology, ichthyofauna, water quality and aesthetics of south african estuaries
Provedor de dados: 20
Autores: Cooper, J.A.G.; Harrison, T.D.; Ramm, A.E.L.
The South African 3 000 km coastline has approximately 370 outlets to the sea ranging from small coastal streams to large permanently open tidal estuaries. The current state of scientific information on the vast majority of these systems, however, is virtually nil. As part of a national program to assess the state of South Africa’s estuarine environment, basic surveys were conducted on these systems during the period 1992 to 1999. This included ichthyofauna (fish), water quality, and geomorphological and aesthetic observations. Some 67% of South Africa’s ‘estuaries’ have been surveyed to date. This baseline data has been analysed and synthesised to render it understandable to the non-specialist but at a sufficiently high level to inform potential end users...
Tipo: Working Paper
Palavras-chave: Water quality; Geomorphology; Ichthyofauna; Estuaries.
Ano: 2000
URL: http://hdl.handle.net/1834/660

The Fringing Reef Coasts of Eastern Africa-Present Processes in Their Long-term Context
Provedor de dados: 20
Autores: Arthurton, R.
Sea-level changes through the Quaternary era have provided recurrent opportunities for the biosphere to significantly shape the coastal geomorphology of eastern Africa. Key agents in this shaping have been the calcium carbonate-fixing biota that have constructed the oceanfacing fringing reefs and produced the extensive backreef sediments that form the limestone platforms, cliffs and terraces that characterise these coasts. Today’s reefs comprise tough, algalclad intertidal bars composed largely of coral rubble derived from their ocean front. They provide protection from wave attack to the inshore platforms with their sediment veneers and their beach and beach plain sands that are susceptible to erosion. If the eastern African coasts are subjected to the...
Tipo: Journal Contribution
Palavras-chave: Geomorphology.
Ano: 2003
URL: http://hdl.handle.net/1834/957

Geomorfología de la zona costera adyacente al piedemonte occidental de la Sierra Nevada de Santa Marta entre los sectores de Pozos Colorados y el Río Córdoba, Caribe Colombiano
Provedor de dados: 20
Autores: Posada, B. O.; Idarraga García, J.; Guzman, G.
Se llevó a cabo un estudio geomorfológico a escala 1:23000 de la zona costera adyacente al flanco occidental de la Sierra Nevada de Santa Marta (SNSM) entre el sector de Pozos Colorados (en las afueras de Santa Marta) y el río Córdoba. Esta zona se caracteriza por presentar geoformas de diversos orígenes que son producto de procesos tectónicos, denudativos y sedimentarios fluviales. Desde estse punto de vista se tienen Unidades de Origen Estructural-Denudativo, representadas por montañas y colinas de basamento ígneo y metamórfico; Unidades de Origen Fluvial, como abanicos aluviales y terrazas fluviales; y Unidades de Origen Marino, como llanuras costeras, plataformas de abrasión elevadas y playas antiguas y actuales. Las Unidades Estructurales-Denudativas...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Coastal zone; Alluvial fans.
Ano: 2011
URL: http://hdl.handle.net/1834/4412

Geomorphology of the Kenyan Coast: Not as a Result of Sea-Level Change Alone
Provedor de dados: 20
Autores: Abuodha, P.A.W.
The coastal setting and the geology control the geomorphology on the Kenyan coast. The evolution of the physical environment has also been influenced by climate, wave and tidal regime, sedimentation and river discharge. The shore terraces of Kenyan coast correspond to eustatic movements of sea level. There seems to be evidence of a high water level during the late Pleistocene. For the lower terraces a Holocene age is suggested. During the Pleistocene, sea level fluctuations associated with glacial / interglacial phases left well developed raised platforms and beaches. The Kenyan coast has a strong tectonic influence and it is difficult to describe the coast in terms of emergence or submergence only. It can therefore be concluded that the geomorphology of...
Tipo: Report
Palavras-chave: Geomorphology; Sea level.
Ano: 1993
URL: http://hdl.handle.net/1834/407

Introducción al problema de la erosión litoral en Urabá (Sector Arboletes-Turbo) Costa Caribe colombiana
Provedor de dados: 20
Autores: Correa, I.D.; Vernette, G.
Shoreline retreat has been the net dominant historical trend along the 145 km-length littoral between Arboletes and Turbo (Southern Caribbean of Colombia). For the last four decades, there were identified in this littoral shoreline retreats of about 50-100m in several places (Uveros, Damaquiel, Zapata, Turbo) and a maximun of 1.6 km in the Punta Rey-Arboletes area, where land losses were of 4.5 k m2, at exceptional rates of 40m/year. The synthesis of the available information suggest that the general “susceptibility” to erosion between Arboletes and Turbo could be related primarily to relative sea level rise, associated to tectonic movements as well as to the effects of mud diapirism and hydroisostacy. In the more critical areas (Arboletes, Turbo), the...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Erosion; Coastal engineering; Erosion; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2651; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 2004
URL: http://hdl.handle.net/1834/3051

Morfología y sedimentación del sistema estuarino  Estero Salado - Río Guayas
Provedor de dados: 20
Autores: Rada, F.
Durante el período 1984-1985 se realizaron estudios geológicos en el sistema estuarino Estero Salado - Río Guayas, los mismos que comprendieron trabajos de geomorfología, geofísica (sísmica) y sedimentología. Los resultados de esas investigaciones, que se presentan en este artículo, llevan a establecer las diferencias existentes entre el Estero Salado y Río Guayas como consecuencia probable del mayor aporte de sedimentos y corrientes de agua recibida por el Río Guayas, y de la carga adicional de sedimentos por la construcción de camaroneras y tala de manglares.
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Sediments; Estuarine sedimentation; Estuaries; Estuaries; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1986
URL: http://hdl.handle.net/1834/2143

Benthic communities and geomorphology of the Tesoro Island Coral Reef, Colombian Caribbean
Provedor de dados: 20
Autores: Sánchez-M., Juan M.
The benthic communities distribution in Tesoro Island (Colombian Caribbean) coral reef was determinad by cartography of reef morphology and functional groups from aerial photographs, theodolite triangulation, and bottom transects over depths ranging from O to 30 m. Tesoro Island is a sand cay reef developed over an emerged reef platform whose basal cone possibly originated by mud diapirism on the continental shelf. The benthic communities are distributed as subzones of the geomorphologic units. The reef crest lies along the breaker zone, formed by Millepora spp. buttresses covered on their tops by Palythoa spp. and seawardly by a turf of Dictyota spp. The rear reef (varying from 0.5-1.5 m ¡n depth) is composed of pavement and grooves with live Porites...
Tipo: Journal Contribution
Palavras-chave: Ecology; Benthos; Outer continental shelf; Coral; Algae; Surf; Cartography; Condition factor; Aerial photography; Geomorphology; Coral reefs; Ecology; Benthos; Aerial photography; Coral reefs; Algae; Cartography; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_8634; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_1344; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1995
URL: http://hdl.handle.net/1834/3803

Géomorphologie et dynamique actuelle du littoral du Golfe du Benin
Provedor de dados: 20
Autores: Blivi, A.B.
Le littoral étudié est situé sur la frange méridionale de la côte ouest-africaine, localisé dans le golfe du Bénin enire le cap des Trois Pointes et la façade ouest du delta du Niger. 11 s'étend sur 500 km de long et mesure 1 à 25 km de largeur. L!étude porte sur la géomorphologie, l'évolution et la morphodynamiqiue actuelle de deux ensembles distincts: un littoral formé de delta lagunaire, peu complexe avec un front deltaïque caractérisé par une série de flèches sableuses accolées; de cordons associés a un système lagunaire et un littoral ocheux marqué par des falaises taillées dans les roches cristallines et sédimentaires et entrecoupé par des estuaires à lagunes, des baies abritées où se développe une végétation de palétuviers. Le relief est raccordé à...
Tipo: Theses and Dissertations
Palavras-chave: Geomorphology; Geology; Geology; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1993
URL: http://hdl.handle.net/1834/2702

Guidelines for Vulnerability Mapping of Coastal Zones in the Indian Ocean
Provedor de dados: 20
Autores: Bigot, L.; Canovas, S.; Denis, J.; Dutrieux, E.; Hénocque, Y.; Quod, J.P.
The purpose of this guide is to propose a complete methodological procedure for the creation of a database and a cartographic decision-aid system. It is illustrated by two case studies carried out in the area in the framework of the Indian Ocean Commission’s Regional Environmental Programme (REP), financed by the European Union (REP-IOC/EU).
Tipo: Book
Palavras-chave: Oceanography; Mapping; Maps; Map projections; Coastal zone; Coastal morphology; Geological data; Geomorphology; Mapping; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_12390; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 2000
URL: http://hdl.handle.net/1834/2722

Détermination fractale des types de cotes basée sur les systèmes d’informations géographiques : cas de la Tunisie
Provedor de dados: 20
Autores: Bel Hassen, M.; Azizi, M.
Les dimensions fractales des côtes tunisiennes ont été déterminées en utilisant les techniques spatiales fournies par les systèmes d’informations géographiques, en se basant sur une cartographie au 1 :100000 du trait côte. La dimension fractale des côtes tunisiennes est estimée à 1,0805. Une segmentation des côtes en trois parties (nord, est et sud) a permis de mettre en évidence une décroissance de la dimension fractale du nord vers le sud, indiquant que la complexité de la côte décroît vers les faibles latitudes. De nombreuses conséquences découlent de ces résultats, applicables à des stratégies d’échantillonnage, comme à la compréhension de l’écologie et  l’interprétation de la distribution des espèces et les modèles de biodiversité.
Tipo: Journal Contribution
Palavras-chave: Biodiversity; Cartography; Coastal morphology; Coasts; GIS; Geomorphology; Mapping; Mathematical analysis.
Ano: 2006
URL: http://hdl.handle.net/1834/4279

Evolución morfológica de la costa en la Península de Santa Elena: evidencias de plataformas marinas y socavones superpuestos
Provedor de dados: 20
Autores: Santana, E.; Dumont, J.F.; Armas, V.; Burbano, L.; Gutiérrez, L.; Valdez, F.
En esta publicación se presentarán los elementos de morfología costera observados en la costa norte de la Península de Santa Elena. A largo plazo esta es una costa con alta variabilidad, pues estaba sumergida o compuesta por varias islas durante el cuaternario reciente (Pedoja, 2003). Dos preguntas básicas han sido planteadas en la ejecución de este estudio, la primera responder si esta alta variabilidad a largo plazo esta reflejada en la costa actual, y la segunda, si las morfologías costeras de plataformas litorales de abrasión son parte del proceso de la evolución costera.
Tipo: Journal Contribution
Palavras-chave: Cliffs; Uplift; Coasts; Coastal morphology; Geomorphology; Coastal erosion; Coasts; Geomorphology; Coastal erosion; Http://aims.fao.org/aos/agrovoc/c_1700; Http://aims.fao.org/aos/agrovoc/c_3233; Http://aims.fao.org/aos/agrovoc/c_9949.
Ano: 2004
URL: http://hdl.handle.net/1834/2392

Geomorfología de Punta Fort William, Isla Greenwich, Islas Shetland del sur, Antártida
Provedor de dados: 20
Autores: Cornejo, R.; Horn F., N.; Troian, F.L.
Correlacionando las condiciones topográficas, los procesos geodinámicos que han modelado y modelan el paisaje, y la litología en Punta Fort William, se han identificado siete unidades geomorfológicas. Los cuerpos de roca que afloran en forma aislada en el sector y que son remanentes de la erosión glaciar y marina, conforman la primera unidad geomorfológica denominada promontorios rocosos. La segunda unidad está conformada por los depósitos de playa actuales y por las paleoplayas que han sido alejadas de la línea de costa por el proceso de levantamiento que afecta a las Islas Shetland del sur. También se han identificado como unidades geomorfológicas los depósitos glaciolacustres, las zonas fluvioglaciares, las actuales zonas de abrasión marina, las zonas...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Lithology; Glacial erosion; Geomorphology; Lithology; Http://aims.fao.org/aos/agrovoc/c_3233; Http://aims.fao.org/aos/agrovoc/c_12203.
Ano: 1993
URL: http://hdl.handle.net/1834/3769

Caracterización geomorfológica y sedimentológica de la Bahía de Jaramijó, en la provincia de Manabí
Provedor de dados: 20
Autores: Soledispa, B.
En este trabajo se presentan los resultados del reconocimiento geológico de la zona de playa, zona de dunas, de los acantilados, así como fotografías de las características geomorfológicas más sobresalientes de la Bahía de Jaramijó, observadas en el año 2008. Los acantilados son de mediana a baja altura, conformados por rocas sedimentarias, principalmente de la Formación Tablazo. Hay algunos sectores donde la erosión es más fuerte, producto del socavamiento que hace el oleaje en la base de los acantilados. También se presentan los resultados de las investigaciones realizadas sobre sedimentos superficiales de fondo, desde el punto de vista de la textura y de los parámetros estadísticos. Un total de 45 muestras de sedimentos del fondo marino de la zona...
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Sedimentology; Sedimentary rocks; Parameters; Cliffs.
Ano: 2012
URL: http://hdl.handle.net/1834/4720

Características geomorfológicas y sedimentológicas de la Bahía de Santa Elena
Provedor de dados: 20
Autores: Soledispa, B.
En este trabajo se presentan los resultados de las investigaciones realizadas sobre sedimentos superficiales de fondo, desde el punto de vista granulométrico. Un total de 28 muestras de sedimentos del área entre la Puntilla de Santa Elena y Punta Blanca (Provincia de Santa Elena, Ecuador), fueron analizadas, de cuyo resultado se determinó una predominancia de arena media a fina, mal seleccionada, aunque también hay bien seleccionadas; son asimétricamente negativas. Los acantilados del sector están conformados por rocas sedimentarias, muy inestables, por eso son de fácil erosión. Centros turísticos y poblacionales se han instalado a lo largo de la línea de costa.
Tipo: Journal Contribution
Palavras-chave: Sediments; Geomorphology; Granulometry; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 2009
URL: http://hdl.handle.net/1834/3370

Magnetic Susceptibility of Soil to Differentiate Soil Environments in Southern Brazil
Provedor de dados: 90
Autores: Ramos,Priscila Vogelei; Dalmolin,Ricardo Simão Diniz; Marques Júnior,José; Siqueira,Diego Silva; Almeida,Jaime Antonio de; Moura-Bueno,Jean Michel.
ABSTRACT The interest in new techniques to support digital soil mapping (DSM) is increasing. Numerous studies pointed out that the measure of magnetic susceptibility (MS) can be extremely useful in the identification of properties related with factors and processes of soil formation, applied to soil mapping. This study addressed the effectiveness of magnetic soil susceptibility to identify and facilitate the distinction of different pedogenic environments of a representative hillslope in the highland Planalto Médio in the state of Rio Grande do Sul (RS), Brazil. In a 350-ha area in the municipality of Santo Augusto, RS, a representative transect was selected, trenches opened for soil characterization and 29 grid points marked at regular distances of 50 m,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pedometrics; Geomorphology; Detailed mapping.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100301

Analysis of Potential for Linear Erosion in the Cerrado Biome Using Morphopedology
Provedor de dados: 90
Autores: Maranhão,Deyvid Diego Carvalho; Aguado,Oscar Ivan de Oro; Pereira,Marcos Gervasio; Araújo,Adelson Paulo; Castro,Selma Simões de; Ferreira Júnior,Laerte Guimarães.
ABSTRACT The Cerrado is a vegetation complex with a wide variety of phytophysiognomies, and sustainable management is essential for maintaining biodiversity. Morphopedology is a tool that can assist in developing plans for control of soil and land use, especially in evaluating the potential of soil erosion processes. This technique allows landscape units considered “homogeneous” to be distinguished, as a result of interaction between physiographic conditions. The aim of this study was to evaluate potential for erosion in São Miguel do Araguaia, state of Goiás, Brazil, through definition of morphopedological compartments (MPC), on the assumption that soil use has increased erosion. Landscape units were identified through use of geology overlay, hypsometry,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosivity; Erodibility; Pedology; Geomorphology; Soil science.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100514

Discrimination of geomorphic surfaces with multivariate analysis of soil attributes in sandstone - basalt lithosequence
Provedor de dados: 124
Autores: Campos,Milton César Costa; Marques Júnior,José; Souza,Zigomar Menezes de; Siqueira,Diego Silva; Pereira,Gener Tadeu.
The geomorphic surface concept allows interrelationship among various branches of soil sciences, such as geology, geomorphology and pedology. This association enhances the understanding of spatial soil distribution through landscape, pointing out the soil attributes behavior, which are mainly related to stratigraphy and relief forms. Therefore, this study aims to apply multivariate statistics to categorize geomorphic surfaces in sandstone - basalt lithosequence, so as to provide a basis for soil assessment in similar areas. The study area is located in Pereira Barreto County, SP, Brazil. An area of 530 hectare was selected, where three geomorphic surfaces (I, II and III) were located and mapped. In this area, 134 soil samples were collected at depths of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil Science; Geomorphology; Multivariate analysis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000300003

Characterization of abiotic conditions affecting vegetation distribution in the river Plate coastal plain, Argentina - DOI: 10.4025/actascibiolsci.v30i4.5875
Provedor de dados: 3
Autores: Giménez, Jorge Eloy; UNLP/Argentina; Hurtado, Martín Adolfo; UNLP/Argentina; Marínez, Omar Raúl; UNLP/Argetina.
The river Plate coastal plain is located in northeastern Buenos Aires province, where  geological events such as sea transgressions and regressions in the Holocene have produced a stratigraphic column with marine-estuarine, fluviatile and continental sediments, as well as a variety of landforms and soils. The aim of this paper is to describe these different coastal settings and their influence in the distribution of plant communities.
Palavras-chave: Coastal plain; Geomorphology; Soils; Vegetation; River Plate.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5875

Morphology and sedimentology of the Itaipú Embayment - Niterói/RJ
Provedor de dados: 42
Autores: SALVADOR,MARCUS VINICIUS S.; SILVA,MARIA AUGUSTA M. DA.
Bathymetric and sedimentological data from water depths between 3 and 28 meters are the basis of a detailed bathymetric map of the Itaipú Embayment and an understanding of its sedimentary dynamics. Shallower than 16 meters the contours are parallel to the shoreline whereas the morphology of the deeper bottom is influenced by the Menina, Mãe, and Pai islands. Medium sand is prevalent, with local variations in more protected or less protected areas. Minor amount of black mud possibly derives from the Itaipú Lagoon. Siliciclastic granules and pebbles may be relict. The Itaipú Embayment’s bottom morphology is controlled by stormy waves and the calmer easternmost part of the embayment presents a tendency to accumulate finer sediments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal dynamics; Coastal sedimentation; Geomorphology; Quaternary.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000100009

Morphology and morphometry of upland lakes over lateritic crust, Serra dos Carajás, southeastern Amazon region
Provedor de dados: 42
Autores: SILVA,MARCIO S. DA; GUIMARÃES,JOSÉ T.F.; SOUZA FILHO,PEDRO W.M.; NASCIMENTO JÚNIOR,WILSON; SAHOO,PRAFULLA K.; COSTA,FRANCISCO R. DA; SILVA JÚNIOR,RENATO O.; RODRIGUES,TARCÍSIO M.; COSTA,MARLENE F. DA.
ABSTRACT High-resolution satellite images, digital elevation models, bathymetric and sedimentological surveys coupled with statistical analysis were used to understand the physical environment and discuss their influence on water quality of the five upland lakes of Serra Sul dos Carajás, southeast Amazonia. The lakes have mid-altitude ranges (elevation), very small (catchment) and shallow to very shallow (central basins). Based on the length, area and volume, Violão and TI (Três Irmãs)-3 lakes may present large vertical movements of the water due to wind action and weakly stratified waters. Trophic conditions based on depth and shore development (Ld) parameters must be used with caution, since Amendoim Lake is relatively deep, but it is oligotrophic to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lateritic crust; Lakes; Limnology; Geomorphology; Amazon region; Carajás.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401309

High-resolution topography for Digital Terrain Model (DTM) in Keller Peninsula, Maritime Antarctica
Provedor de dados: 42
Autores: SCHÜNEMANN,ADRIANO L.; ALMEIDA,PEDRO HENRIQUE A.; THOMAZINI,ANDRÉ; FERNANDES FILHO,ELPÍDIO I.; FRANCELINO,MÁRCIO R.; SCHAEFER,CARLOS E.G.R.; PEREIRA,ANTONIO BATISTA.
Abstract High resolution topography (HRT) surveys is an important tool to model landscapes, especially in zones subjected to strong environmental changes, such as Antarctica, where landform is highly influenced by cryoclasty and permafrost melting. The aim of this work was to obtain a high accurate DTM for Keller Peninsula, Maritime Antarctica. The survey study was assessed in the 2014/2015 and 2015/2016 during the austral summer, by using Terrestrial Laser Scanner (TLS). In order to cover 8 km² of the Peninsula, the TLS equipment was installed in 81 different points. Results of the DTM generated by TLS (hereafter, HRT-DTM), and the terrain variables Aspect, Slope and Hillshade obtained were compared with previous models generated by aerophotographic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Terrestrial laser scanner; Remote sensing; Geomorphology; Antarctic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502001

Quaternary evolution of the Caravelas strandplain - Southern Bahia State - Brazil
Provedor de dados: 42
Autores: Andrade,Ana C.S.; Dominguez,José M.L.; Martin,Louis; Bittencourt,Abílio C.S.P.
An evolutionary model is proposed for the Caravelas strandplain. The model encompasses integration of: (i) mapping of Quaternary deposits, (ii) cartography of beach-ridge alignments and their truncations, (iii) relative sea-level history, (iv) development history of the Abrolhos coral reefs, (v) vibra-coring and (vi) C14 dating of Quaternary deposits. Seven major evolutionary stages were identified. These stages show that the strandplain has had its Quaternary evolution strongly controlled by relative sea-level changes. In addition, the development of the Abrolhos coral reefs has also played an important role in dispersion and accumulation of sediments along the coastline, causing localized inversion in longshore sediment transport.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal evolution; Sea-level fluctuations; Sedimentary facies; Geomorphology.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000300008

Tectonics and paleogeography of the Marajó Basin, northern Brazil
Provedor de dados: 42
Autores: COSTA,JOÃO B. S.; HASUI,YOCITERU; BEMERGUY,RUTH L.; SOARES-JÚNIOR,ADILSON V.; VILLEGAS,JAVIER M. C.
The Marajó Basin area presents geologic and geomorphologic features chiefly due to the Mesozoic extension and post-Miocene neotectonics. The extension event with an Early and a Late Cretaceous phases originated four sub-basins that constitutes the Marajó Basin, with a thick continental clastic sequence showing marine influence. NW and NNW normal faults and NE and ENE strike-slip faults controlled the basin geometry. The extension, related to the Equatorial Atlantic opening, propagated into the continent along crustal weakness zones of the Precambrian Tumucumaque, Amapá and Araguaia orogenic belts. The neotectonic event is a strike-slip regime which developed transtensional basins filled in by Upper Tertiary shallow marine (Pirabas Formation) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marajó Basin; Structure; Evolution; Paleogeography; Geomorphology.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000300013

Use of synthetic aperture radar for recognition of Coastal Geomorphological Features, land-use assessment and shoreline changes in Bragança coast, Pará, Northern Brazil
Provedor de dados: 42
Autores: Souza-Filho,Pedro W. M.; Paradella,Waldir R.
Synthetic Aperture Radar (SAR) images are being used more extensively than ever before for geoscience applications in the moist tropics. In this investigation, a RADARSAT1-1 C-HH SAR image acquired in 1998 was used for coastal mapping and land-cover assessment in the Bragança area, in the northern Brazil. The airborne GEMS 1000 X-HH radar image acquired in 1972 during the RADAM Project was also used for evaluating coastal changes occurring over the last three decades. The research has confirmed the usefulness of RADARSAT-1 image for geomorphological mapping and land-cover assessment, particularly in macrotidal mangrove coasts. It was possible to map mangroves, salt marshes, chenier sand ridges, dunes, barrier-beach ridges, shallow water morphologies and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geomorphology; Coastal changes; Remote sensing; Mangrove; Amazon.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000300007