Submitted by Leticia Schettini (leticia@ufrrj.br) on 2016-10-10T13:01:19Z No. of bitstreams: 1 2011 - Valdemir Lucio Durigon.pdf: 4431691 bytes, checksum: bc255769946a67387959db9cc02dbb28 (MD5) / Made available in DSpace on 2016-10-10T13:01:19Z (GMT). No. of bitstreams: 1 2011 - Valdemir Lucio Durigon.pdf: 4431691 bytes, checksum: bc255769946a67387959db9cc02dbb28 (MD5) Previous issue date: 2016-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior-CAPES / Soil erosion is a growing problem in today's world, virtually in every continent, mainly due to the rising demand for food, fibers and biofuels. On the other hand, the correct planning of land use, avoiding farming lands with high erosion risk, could minimize the erosion process without compromising food security. The aim of this study was to evaluate erosion risk and soil losses in a watershed using remote sensing and GIS, coupled with temporal evolution of vegetation cover and occupation of land, in areas of the municipalities of Paty do Alferes and Miguel Pereira, Rio de Janeiro State. For this, the RUSLE (Revised Universal Soil Loss Equation) was used as model to predict soil loss, combined with remote sensing data and the derived NDVI (Normalized Difference Vegetation Index), to determine the soil coverage in a GIS (Geographic Information System). Satellite images used in this research included: TM sensor of Landsat-5, ETM+ of Landsat-7, CCD of CBERS-2, and CCD and HRC from CBERS 2B, obtained for the study period. The processed remotely sensed data and the geographic information system, integrated with models for predicting soil loss, showed good performance for environmental analysis. The use of NDVI was a suitable tool for determining the vegetation coverage, to be applied in soil loss prediction models. The soil losses and erosion risks were strongly associated with characteristics of relief, and they can be used for planning land usage and occupation, in urban and rural areas. More studies should be conducted linking GIS, erosion prediction models, and remote sensing data in order to better predict the occurrence of environmental disasters, also to create databases about soil?s response in relation to different causative erosional agents. / A eros?o do solo ? um problema crescente no mundo atual, em praticamente todos os continentes, que se deve ao crescimento da demanda por alimentos, ao mau uso dos solos e a necessidade de produ??o de fibras e combust?veis. Por outro lado, o planejamento correto do uso e cobertura dos solos evitando utilizar ?reas para a agricultura que tenham alto risco de eros?o e alto potencial natural de eros?o pode minimizar o processo, sem comprometer a seguran?a alimentar. O objetivo deste trabalho foi avaliar o risco de eros?o e a perda de solo em uma bacia hidrogr?fica utilizando t?cnicas de sensoriamento remoto e SIG, associados ? evolu??o temporal dos ?ndices de cobertura e ocupa??o do solo, em ?reas nos munic?pios de Paty do Alferes e Miguel Pereira, Estado do Rio de Janeiro. Para isso, utilizou-se o modelo de predi??o de perdas de solos, no caso a RUSLE (?Revised Universal Soil Loss Equation?), associado a t?cnica de sensoriamento remoto integrada ao ?ndice de vegeta??o NDVI (?Normalized Difference Vegetation Index?) para determinar a cobertura dos solos em um SIG (Sistema de Informa??o Geogr?fica). Para tal, foram utilizadas imagens de sat?lite dos sensores TM Landsat-5, ETM+ Landsat-7 CCD CBERS-2 e CCD e HRC do CBERS 2B coletadas no per?odo considerado. Os dados de sensoriamento remoto e do sistema de informa??es geogr?ficas integrados a modelos de predi??o de perdas de solos caracterizaramse como importantes instrumentos na an?lise do meio ambiente. A utiliza??o de NDVI constitui-se em ferramenta adequada para a determina??o da cobertura, para aplica??o em modelos de predi??o de perda de solo. As perdas de solo, o potencial natural de eros?o e o risco mostraram forte rela??o com as caracter?sticas do relevo, podendo ser utilizados no planejamento do uso e ocupa??o do solo em ?reas urbana e rural. Mais estudos devem ser realizados associando SIG, modelos de predi??o de eros?o e t?cnicas de sensoriamento remoto no sentido de melhor prever a ocorr?ncia de desastres ambientais, tamb?m para criar bancos de informa??es sobre o comportamento dos solos em rela??o aos diversos agentes causadores do processo erosivo.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-08-17T17:49:24Z No. of bitstreams: 1 2017 - Jo?o Henrique Gaia Gomes.pdf: 3515689 bytes, checksum: 6a7151f0e574d679527cd2a45c6c5668 (MD5) / Made available in DSpace on 2017-08-17T17:49:24Z (GMT). No. of bitstreams: 1 2017 - Jo?o Henrique Gaia Gomes.pdf: 3515689 bytes, checksum: 6a7151f0e574d679527cd2a45c6c5668 (MD5) Previous issue date: 2017-02-23 / CAPES / As a result of activities such as agriculture, pastures for cattle raising, mining areas, logging and improper occupation in urban areas, about 28% of the Brazilian territory is classified as degraded. In some regions of Brazil, due to their geomorphological aspects associated to the intense precipitations that occur in summer, degradation problems such as erosive processes and slope slides can be verified. The Pinheiral-RJ region currently has only 18% of its territory under native forest cover at different levels of alteration and regeneration, with 88% of its area classified as high or very high vulnerable to erosion. Therefore, the objective of this work was to evaluate the effect of soil attributes and morphology of the sub-basin of the CachimbalRiver as conditions to the erosive process in different topographic features (pedoforms), concave and convex, in the Middle Vale do Para?ba do Sul -RJ, in order to generate information that contributes to the recovery programs of degraded areas. The digital elevation model (DEM) was generated using topographic maps of the municipalities of Volta Redonda (Page SF-23-Z-A-V-2) and Pira? (Page SF-23-Z-VI-1) using ArcGis 10.2 software. The quantification of gull numbers was performed through Google Earth. Morphometric characterization, trench opening for soil classification, collection of soil samples, physical and routine fertility analysis and analysis of soil attributes variability were performed based on literature criteria. It was verified that there is no susceptibility to flood in the studied area due to its elongated shape. The sub-basin has a dendritic drainage pattern, flow order of 5th degree, and very large drainage density(Dd). In particular, the average hydrographic density (Hd) value indicates a high potential for generating new channels. Although roughness coefficient (Cr)indicates agricultural capacity for agriculture, roughness index (Ir) demonstrates the need to adopt more nuanced agricultural practices that take into account the particular characteristics of the area and recognize variations in the terrain and soil characteristics. 30 gullies were quantified throughout the sub-basin, 24 being in the convex pedoform and 6 in the concave. The physical and chemical attributes differ in the environments. / Em decorr?ncia de atividades como agricultura, pastagens destinadas a pecu?ria, ?reas de minera??o, explora??o madeireira e ocupa??o impr?pria nas regi?es urbanas, cerca de 28% do territ?rio brasileiro ? classificado como degradado. Em algumas regi?es do Brasil, em fun??o dos seus aspectos geomorfol?gicos associados ?s intensas precipita??es ocorridas no ver?o, s?o verificados problemas de degrada??o como processos erosivos e deslizamentos de encostas. A regi?o de Pinheiral-RJ apresenta atualmente, apenas 18 % de seu territ?rio sob cobertura florestal nativa em diferentes n?veis de altera??o e regenera??o, possui88% de sua ?rea classificada como alta ou muito alta vulnerabilidade ? eros?o. Sendo assim, o objetivo desse trabalho foi avaliar o efeito dos atributos do solo e da morfologia da sub-bacia do ribeir?o Cachimbal como condicionantes no processo erosivo em diferentes fei??es topogr?ficas (pedoformas), c?ncava e convexa, na Regi?o do M?dio Vale do Para?ba do Sul-RJ, com finalidade de gerar informa??es que contribuam para os programas de recupera??o de ?reas degradadas. Foi gerado o modelo digital de eleva??o (MDE)atrav?s das cartas topogr?ficas dos munic?pios de Volta Redonda (Folha SF-23-Z-A-V-2) e Pira? (Folha SF- 23-Z-VI-1), utilizando o software ArcGis 10.2. A quantifica??o do n?mero de vo?orocas foi realizada atrav?s do Google Earth. A caracteriza??o morfom?trica, a abertura de trincheiras para classifica??o do solo, a coleta das amostras de terra, as an?lises f?sicas e de rotina da fertilidade e a an?lise da variabilidade dos atributos do solo foram realizadas baseando-se em crit?rios da literatura. Verificou-se que n?o h? susceptibilidade de enchente na ?rea estudada, devido a sua forma alongada. A sub-bacia tem um padr?o de drenagem dendr?tico, ordem de fluxo de 5? grau, e Densidade de drenagem (Dd) muito boa. Em particular, o valor da densidade de hidrogr?fica (Dh) indica um elevado potencial para gerar novos canais.Embora o Coeficiente de rugosidade (Cr) indique capacidade agr?cola para a agricultura, o ?ndice de rugosidade (Ir) demonstra a necessidade de adotar pr?ticas agr?colas mais nuan?adas que levem em conta as caracter?sticas particulares da ?rea e que reconhe?am varia??es no terreno e caracter?sticas do solo. Foram quantificadas 30 vo?orocas em toda a sub-bacia, sendo 24 na pedoforma convexa e 6 na c?ncava. Os atributos f?sicos e qu?micos diferiram quanto aos ambientes.

Made available in DSpace on 2015-02-24T19:48:40Z (GMT). No. of bitstreams: 1 1-44.pdf: 5231918 bytes, checksum: eda1e7c0b224ead6ae01660a9c2ee531 (MD5) Previous issue date: 2009-10-16 / The northern coast of Rio Grande do Norte State is characterized by strong changes in coastal morphology, caused by various geological and climatic factors. In this region are installed the main socio-economic activities of the State, highlighting the oil industry, which exerts much of its activities in the coastal area studied. Erosion is a constant problem in this region because it affects the entire local populace to the destruction of houses and trade, rendering tourism, affecting the livelihood activities and industrial activities. The greatest risk is related to environmental damage that can be caused by the oil spill in this region. To understand what determines the changes in coastal morphology this Doctoral Thesis is proposed to identify the factors at local, regional and even global corroborate coastal dynamics to this coast in question. For this study, used several different products and tools for interpreting the conditions of the erosive effect that dominates the whole northern coast of the State, in an attempt to quantify and describe the causes and effects that affect the entire coastal zone monitored. The development of activities is built into the projects Rede 05 PETROMAR (CTPETRO-FINEP/PETROBRAS/CNPq), PETRORISCO, HIDROSEMA, PETROMAR e Rede 05/04 POTMAR (FNDCT/CTPETROFINEP/ CNPq), in the activities of multidisciplinary and inter-features in issues involving environmental monitoring and oil activity / O litoral setentrional do Estado do Rio Grande do Norte ? caracterizado por fortes mudan?as na sua morfologia costeira, ocasionadas por diversos fatores geol?gicos e clim?ticos. Nesta regi?o est?o instaladas as principais atividades socioecon?micas do Estado, destacando a Ind?stria Petrol?fera, que exerce boa parte de suas atividades na zona costeira estudada. A eros?o ? o constante problema nesta regi?o, pois afeta toda popula??o local com a destrui??o de moradias e com?rcio, inviabilizando o turismo, comprometendo as atividades de subsist?ncia e as atividades industriais. O risco maior est? relacionado ao dano ambiental que pode ser causado pelo derramamento de ?leo nesta regi?o. Para entender o que condiciona estas modifica??es na morfologia costeira esta Tese de Doutorado se prop?s em identificar os fatores de escala local, regional e at? global que corroboram com a din?mica costeira para este litoral em quest?o. Para tal estudo foram utilizados diversos produtos e diversas ferramentas para interpreta??o das condicionantes do efeito erosivo que predomina como um todo o litoral setentrional do Estado, na tentativa de quantificar e qualificar as causas e efeitos que afetam toda zona costeira monitorada. O desenvolvimento das atividades est? inserido em projetos Rede 05 PETROMAR (CTPETROFINEP/PETROBRAS/CNPq), PETRORISCO, HIDROSEMA, PETROMAR e Rede 05/04 POTMAR (FNDCT/CTPETRO-FINEP/CNPq), no ?mbito das atividades de caracter?sticas multidisciplinares e interinstitucional em temas que envolvem o monitoramento ambiental e a atividade petrol?fera

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-11-12T14:50:39Z No. of bitstreams: 1 CarlosDeSouzaJunior_DISSERT.pdf: 9843701 bytes, checksum: 8e563077102155eb9d912b0e87894399 (MD5) / Approved for entry into archive by Elisangela Moura (lilaalves@gmail.com) on 2015-11-16T13:32:44Z (GMT) No. of bitstreams: 1 CarlosDeSouzaJunior_DISSERT.pdf: 9843701 bytes, checksum: 8e563077102155eb9d912b0e87894399 (MD5) / Made available in DSpace on 2015-11-16T13:32:44Z (GMT). No. of bitstreams: 1 CarlosDeSouzaJunior_DISSERT.pdf: 9843701 bytes, checksum: 8e563077102155eb9d912b0e87894399 (MD5) Previous issue date: 2013-12-20 / As mudan?as naturais e antr?picas que v?m ocorrendo na zona costeira em todo o mundo representam um dos maiores problemas para a sociedade neste s?culo. Essa import?ncia se torna mais evidente devido ? elevada densidade das cidades litor?neas, ? crescente especula??o tur?stico-imobili?ria dessas ?reas e ?s altera??es clim?ticas que tendem a desencadear e acelerar esses processos. Nesse contexto, percebe-se cada vez mais um aumento significativo dos problemas relacionados ? eros?o costeira e recuo de fal?sias no estado do Rio Grande do Norte. A ?rea de estudo desta pesquisa localiza-se na zona costeira do munic?pio de Ba?a Formosa/RN, no litoral oriental-sul do Rio Grande do Norte, e possui uma extens?o de cerca de 1200 m ao longo da praia do Porto. O objetivo principal deste trabalho ? analisar a estabilidade dessas fal?sias, atrav?s de investiga??es de campo, ensaios e an?lises computacionais utilizando o M?todo dos Elementos Finitos e o M?todo de Bishop. Para atender aos objetivos deste trabalho, a ?rea foi subdividida em quatro trechos, e foram aplicados checklists e tamb?m realizados ensaios de caracteriza??o e de cisalhamento direto com materiais obtidos ao longo desses trechos. Os segmentos de fal?sia nessa zona costeira possuem alturas variando em torno de 4 m e 14 m e inclina??es de aproximadamente 40? a 90?. Os solos constituintes das fal?sias foram classificados, em termos gerais, como areias argilosas ou siltosas e argilas arenosas, sendo os solos mais argilosos e variegados pertencentes ? base da fal?sia. As an?lises de estabilidade mostraram que os fatores de seguran?a variaram, no trecho 01, de 2,38 a 6,06, no trecho 02, de 1,01 a 1,62, no trecho 03, de 1,29 a 1,78, e no trecho 04, de 0,83 a 2,48. Assim, os trechos 02 e 03, foram considerados como mais inst?veis. Entretanto, pode-se considerar o trecho 03 como o mais cr?tico devido ? aus?ncia de estruturas de prote??o costeira e ? estreita faixa de praia. Fato que n?o ocorre no trecho 02, o qual possui uma extensa faixa de praia e ? protegido por um muro de arrimo que restringe o acesso dos banhistas ?s ?reas adjacentes do p? da fal?sia. / The natural and anthropogenic changes that are occurring at the coastal zone around the world represent the greatest problem to society in this century. This problem becomes more evident due to high density of coastal cities, to growing tourist-estate speculation of those areas and to climate change that tend to trigger and accelerate the erosive processes that operating in the littoral. In this context, it?s possible perceive ever more a significant increase of problems associated to the coastal erosion and retreat of cliffs in the state of Rio Grande do Norte, where this study area of this search is located. The area is located in the coastal zone of the city of Ba?a Formosa/RN, in south-eastern coast of Rio Grande do Norte, and has a extension of about 1200 meters along the Porto beach. The main objective of this study is to analyze the stability of these cliffs in this region. Through field investigations, testings and computational analysis using the Finite Element Method and Equilibrium Limit Methods. The area was divided into four sections, and were applied checklists, and also realized characterization tests and direct shear tests with materials obtained along these sections. In this manner, it was found that the segments of cliff in this coastal zone have heights around 4 meters to 14 meters and inclinations of approximately 40? to 90?.However the constituents soils of the cliffs were classified, in general terms in accordance to Unified Soil Classification System (USCS), as clayey sands or silty sands, clays of low plasticity, clayey gravels and poorly graduaded sands. The most variegated and clayey soils belong to base of the cliff. The stability analysis showed that the safety factors ranged in section 01, from 1.92 to 4.93, in the section 02, from 1.00 to 1.43, in the section 03, from 1.36 to 1.75 , and section 04, from 1.00 to 3.64. Thus, the sections 02 and 03 were considered more unstable. However, the section 03 can be considered as the most critical section due to the absence of coastal protection structures and the narrow strip of beach.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-10T21:33:06Z No. of bitstreams: 1 CristianeSaraDeMedeiros_DISSERT.pdf: 5023683 bytes, checksum: 199510336231596684c2886c475de0ea (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-13T20:11:36Z (GMT) No. of bitstreams: 1 CristianeSaraDeMedeiros_DISSERT.pdf: 5023683 bytes, checksum: 199510336231596684c2886c475de0ea (MD5) / Made available in DSpace on 2016-05-13T20:11:36Z (GMT). No. of bitstreams: 1 CristianeSaraDeMedeiros_DISSERT.pdf: 5023683 bytes, checksum: 199510336231596684c2886c475de0ea (MD5) Previous issue date: 2015-03-04 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A linha de costa ? sem d?vida uma das fei??es mais din?micas do planeta. Sua posi??o no espa?o muda constantemente em v?rias escalas temporais. A posi??o da linha de costa ? afetada por um n?mero muito grande de fatores alguns de origem natural e intrinsecamente relacionados ? din?mica costeira (balan?o de sedimentos, varia??es do n?vel relativo do mar, dispers?o de sedimentos, etc), e outros relacionados a interven??es humanas na zona costeira. Portanto, com a pesquisa realizada, observaram-se alguns ind?cios de processos erosivos ao longo da praia de Ponta Negra.O local de estudo ? um dos grandes propulsores da economia da cidade, tanto na economia formal, quanto na informal, e se mostra a praia urbana mais procurada dos turistas e da popula??o local. O potencial c?nico da paisagem atraiu o investimento de grandes empreendimentos tur?sticos implementados sem estudos pr?vios, que considerassem a din?mica costeira presente, e a falta de infraestrutura de servi?os b?sicos (muitos esgotos clandestinos conectados as galerias de ?gua pluvial), ocasionaram consequ?ncias e impactos negativos ao ambiente. Pensando na car?ncia de estudos envolvendo esta tem?tica e a import?ncia da praia para a cidade, esta disserta??o teve por objetivo central caracterizar e compreender a morfodin?mica da praia de Ponta Negra, ou seja, perceber como ocorrem as transforma??es morfol?gicas da praia de acordo com a sazonalidade clim?tica e marinha durante o per?odo de maio de 2013 a abril de 2014 em tr?s pontos de monitoramento. Para isso, foram utilizados procedimentos t?cnicos envolvendo caracteriza??o ambiental (caracteriza??o dos dois compartimentos de relevo praial presentes - antepraia e estir?ncio), etapas de campo (levantamento topogr?fico, sedimentar e dados hidrodin?micos (Ponto 2) - altura de onda, per?odo de onda, velocidade da corrente de deriva litor?nea) e etapas de laborat?rio (granulometria, Teor de carbonato de C?lcio e Teor de mat?ria org?nica). Tamb?m foi calculado o par?metro de Dean e o volume de sedimento transportado pela corrente litor?nea no Ponto 02. Nos pontos de monitoramento o balan?o sedimentar se mostrou negativo apenas no ponto 03, e foi constatado que a infraestrutura urbana (cal?ad?o) est? ocupando a p?s-praia fazendo com que com a for?a mec?nica das ondas e com a presen?a de galerias pluviais com conex?es clandestinas de esgotos provoquem a eros?o e destrui??o do cal?ad?o na orla da praia. O ponto 02 foi classificada com estado dissipativo para todos os meses. Dessa maneira acredita-se que o referido estudo servir? como suporte para novas pesquisas em ?reas costeiras, uma vez que, os dados poder?o ser usados para pesquisas comparativas e tamb?m para interessados em um maior entendimento desta ?rea que tem grande import?ncia social, pol?tica e ambiental. / The coastline is undoubtedly one of the most dynamic features of the planet. Its position in space is constantly changing in various time scales. The shoreline position is affected by a very large number of factors, some of natural origin and intrinsically related to coastal dynamics (balance of sediments, the relative sea level variations, dispersion of sediments, etc), and other related human interventions in the coastal zone. So to the survey, there were some signs of erosion along the Ponta Negra beach. The study site is a major driver of the city's economy, both in the formal economy, and in informal, and it shows the most popular urban beach of tourists and the local population. The scenic landscape of potential attracted the investment of travel and public enterprises, which did not consider the coastal dynamics present, and with the lack of basic services infrastructure (many illegal sewage connected the rainwater galleries) have caused negative impacts and consequences to the environment . Thinking about the lack of studies involving this issue and the importance of the beach to the city, this work had the main objective to characterize and understand the morphodynamics of Ponta Negra beach, or see how the morphological transformations occur from the beach according to seasonality climate and Navy during the period from May 2013 to April 2014 in three monitoring points. For this, we used technical procedures involving field steps: environmental characterization (characterization of the two major compartments praial gifts-shoreface and estir?ncio), surveying and consolidate the three points, hydrodynamic data (section 02) wave height, period wave, speed of longshore current and laboratory steps (fineness of calcium carbonate content and organic matter content). We also calculated the Dean parameter and the volume of sediment carried by the coastal current in point 02. In the monitoring points, the Point 01 showed less erosivity and greater depositional predominance of sandy sediments, with the negative sediment budget just at the point 03, and it was found that the urban infrastructure (promenade) is taking up the post beach making with the mechanical force of the waves and the presence of storm sewers with underground sewerage connections cause erosion and destruction of the boardwalk on the beachfront. Section 02 was classified as dissipative state for each month. Thus it is believed that the study will serve as support for further research in coastal areas, since the data can be used for comparative studies and also interested in further understanding of this area is of great social, political and environmental.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-27T12:49:56Z No. of bitstreams: 1 DeboraVieiraBusman_TESE.pdf: 8348459 bytes, checksum: 79a87e26f6fc3566dac6cad831498d50 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-30T15:02:40Z (GMT) No. of bitstreams: 1 DeboraVieiraBusman_TESE.pdf: 8348459 bytes, checksum: 79a87e26f6fc3566dac6cad831498d50 (MD5) / Made available in DSpace on 2017-01-30T15:02:40Z (GMT). No. of bitstreams: 1 DeboraVieiraBusman_TESE.pdf: 8348459 bytes, checksum: 79a87e26f6fc3566dac6cad831498d50 (MD5) Previous issue date: 2016-03-04 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Impactos causados por mudan?as clim?ticas na zona costeira, como inunda??o, eros?o costeira, tempestades extremas e ondas de calor, t?m resultado em milhares de mortos, bilh?es de feridos e bilh?es de euros em perdas financeiras. O Brasil est? entre os dez pa?ses mais afetados por mudan?as clim?ticas e as regi?es norte e nordeste do pa?s sofrer?o os maiores impactos. Para estudar a vulnerabilidade social dos munic?pios costeiros de Macau e Guamar?/RN (NE do Brasil) e Salin?polis/PA (N do Brasil), sujeitos a diferentes din?micas ambientais e socioecon?micas, foram aplicados 4 m?todos de an?lise de Vulnerabilidade Social. Os ?ndices de vulnerabilidade social indicaram que os munic?pios estudados tiveram melhorias socioecon?micas nas ?ltimas d?cadas, mas ainda apresentam m?dia vulnerabilidade social. Guamar? foi, em geral, o munic?pio com maior vulnerabilidade social e Macau o menor. Portanto, o incremento econ?mico resultante do setor industrial em Macau e Guamar? n?o est? subsidiando melhorias sociais maiores que o setor de servi?os em Salin?polis. Este estudo tamb?m permitiu identificar com base estat?stica e matem?tica quais vari?veis devem constar em an?lises de vulnerabilidade f?sica do meio ambiente, al?m de facilitar o processo decis?rio por diminuir a subjetividade em an?lises de vulnerabilidade f?sica, tanto na escolha do m?todo quanto das vari?veis ambientais. O m?todo com resultado mais pessimista foi o Vulnerabilidade Ambiental Relativa ao Uso do Solo e ? Dist?ncia da Linha de Costa (VULC) para Macau e Guamar? e o Vulnerabilidade Ambiental Relativa (VR) para Salin?polis. Para todos os munic?pios, o m?todo com resultado mais otimista foi o Vulnerabilidade Ambiental ? Eros?o e Inunda??o Costeira (VEIC), que apresentou ?reas de hot spot ao aumento relativo do n?vel m?dio do mar. Os munic?pios costeiros de Macau e Guamar? apresentaram m?ltiplos conflitos de uso e ocupa??o do solo devido as principais atividades econ?micas consistirem nas ind?strias do petr?leo e g?s, carcinicultura, salinicultura e e?lica instaladas em setores de grande susceptibilidade ambiental a impactos decorrentes de mudan?as clim?ticas. Enquanto Salin?polis apresentou maior vulnerabilidade costeira relacionado ? m? gest?o de uso da sua orla, que em parte foi ocupada por casas de segundas-resid?ncias em local de forte din?mica erosiva, gerando onerosos gastos com obras de ?conten??o? ? eros?o. Em todos os munic?pios, as ?reas de maior risco e criticidade ? inunda??o foram a zona urbana, ?reas onde est?o situadas as atividades econ?micas principais e as ?reas de manguezal. Proje??es nestes munic?pios indicaram que centenas a milhares de pessoas estar?o sob risco de inunda??o at? 2100, gerando perdas ambientais e socioecon?micas na ordem de at? centenas de milh?es de d?lares. Estes resultados podem subsidiar o processo decis?rio para gestores ambientais e os m?todos testados s?o replic?veis tanto em munic?pios costeiros quanto interiores. / Climate change on the coastal zone causes impacts such as inundation, coastal erosion, storm surges and heatwaves and have resulted in millions of dead, billions of injured people and billions of dolars in economic losses. Brazil is among the top ten countries affected by climate change and the North and Northeast regions will suffer most of the impacts. In order to study the socioeconomic vulnerability of coastal counties of Macau and Guamar?/RN (NE of Brazil) and Salin?polis/PA (N of Brazil), which are exposed to different environmental and social-economics dynamics, were applied four indexes of Socioeconomic Vulnerability. Guamar? was the county with highest vulnerability in the first three methods and Salin?polis was the most vulnerable in the fourth method. Therefore, the economic profit obtained with industries installed in Macau and Guamar? is not generating greater social development, then the services sector of Salin?polis. This research also identified which variables would be used in physical vulnerability index, and reduced the subjectivity in the choice of them. The coastal counties of Macau and Guamar? feature multiple conflicts of land use/land cover since the main economic activities consist in the oil and gas industries, salt and shrimp farming, and wind power installed in segments of great environmental susceptibility to climate change impacts. Salin?polis had greater coastal vulnerability because haven?t sustainable shoreline management policies, and the shoreline is partially occupied by houses where the coastal dynamics are strong, resulting in constantly spent on coastal protection. The areas under greatest risk and criticality to flooding were the urban areas, where are the main economic activities, and mangrove areas. Projections indicated that in these counties hundreds to thousands of people will be at flooding risk until 2100, resulting in environmental and socio-economic losses at hundreds or even millions of dollars. These results may support the decision-making process for environmental managers and tested methods are replicable in both coastal as inner couties.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-07-03T13:49:24Z No. of bitstreams: 1 CeciliaAlvesDeOliveira_DISSERT.pdf: 6009195 bytes, checksum: 8fb3b568732f80c4209f23b7f0b0b4ec (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-07-07T14:50:39Z (GMT) No. of bitstreams: 1 CeciliaAlvesDeOliveira_DISSERT.pdf: 6009195 bytes, checksum: 8fb3b568732f80c4209f23b7f0b0b4ec (MD5) / Made available in DSpace on 2017-07-07T14:50:39Z (GMT). No. of bitstreams: 1 CeciliaAlvesDeOliveira_DISSERT.pdf: 6009195 bytes, checksum: 8fb3b568732f80c4209f23b7f0b0b4ec (MD5) Previous issue date: 2017-03-23 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A morfologia das regi?es costeiras est? em constante mudan?a, devido a intera??o de processos naturais e antr?picos. Por vezes, as a??es destes processos na linha de costa podem causar problemas de eros?o, provocando impactos ambientais e preju?zos socioecon?micos. Para que se possa agir de maneira preventiva ? necess?rio um conhecimento aprofundado dos fatores naturais e antr?picos que agem na din?mica costeira. O objetivo deste estudo ? o mapeamento geol?gico do substrato plataformal adjacente a praias de Ponta Negra em Natal-RN, em uma ?rea sob intensa eros?o costeira. A metodologia utilizada consistiu na coleta de amostras superficiais de sedimento da plataforma continental, analisadas quanto a granulometria, composi??o, presen?a de mat?ria org?nica e teor de carbonato de c?lcio. Posteriormente integrados a dados geof?sicos, (batimetria mono e multifeixe e sonografia), hidrodin?micos (ondas, correntes e mar?s) pr?-existentes. Os resultados obtidos at? o presente momento indicam que a granulometria dos sedimentos que comp?em o substrato da plataforma em estudo aumenta com a profundidade, apresentam predom?nio da fra??o areia grossa (43%) seguida por areia m?dia (34%). A presen?a de carbonato de c?lcio ? marcante ao longo de toda a ?rea, e tamb?m aumenta com a profundidade. Os sedimentos silicicl?sticos s?o encontrados pr?ximo a linha de costa, enquanto que os sedimentos biocl?sticos ocorrem predominantemente ap?s a is?bata de 10 m. A plataforma apresenta caracter?sticas de uma plataforma ?faminta?, podendo ser observada pela exposi??o de afloramentos da Forma??o Barreiras na plataforma e na base do Morro do Careca. Essas informa??es devem ser levadas em considera??o para a elabora??o das medidas de recupera??o da ?rea, que vem enfrentando graves problemas com a eros?o. / The morphology of coastal areas is constantly changing due to interaction of natural and anthropogenic processes. Sometimes the actions of these processes on the coastline can cause erosional problems, causing environmental impacts and socio-economic losses. In order to act preventively requires a thorough understanding of natural and anthropogenic factors that act in coastal dynamics. The aim of this study is the geological mapping of marine substrate adjacent the beaches of Ponta Negra, Natal, Brazil, in an area under intense coastal erosion. The methodology consisted of the collection of surface sediment samples of the continental shelf, analyzed for particle size, composition, presence of organic matter and carbonate. Later integrated with pre-existing data such as geophysical (single and multbeam bathymetry, sonography) and hydrodynamic (waves, currents, tides) data. The results indicate that the grain size of the sediments that make up the substrate presented mainly coarse sand (43%), followed by medium sand (34%). The presence of carbonate is marked throughout the area, and increases with depth. The siliciclastic sediments founds near the shoreline, while bioclastic sediments occur predominantly after the isobath of 10m. Barreiras Formation outcrops on the shelf attests the sediment starvation, which used to amplify by human action. This information should be taken into account in the preparation of the recovery measures the area, which is facing serious problems with erosion.

Submitted by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-08-29T21:47:08Z No. of bitstreams: 1 Le?o Xavier da Costa Neto_TESE.pdf: 17237342 bytes, checksum: 34347f57336cb2d8b2728d4e7e54da2f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-08-29T21:49:31Z (GMT) No. of bitstreams: 1 Le?o Xavier da Costa Neto_TESE.pdf: 17237342 bytes, checksum: 34347f57336cb2d8b2728d4e7e54da2f (MD5) / Made available in DSpace on 2017-08-29T21:49:31Z (GMT). No. of bitstreams: 1 Le?o Xavier da Costa Neto_TESE.pdf: 17237342 bytes, checksum: 34347f57336cb2d8b2728d4e7e54da2f (MD5) Previous issue date: 2009-02-27 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Este trabalho tem como objetivo estudar o comportamento das caracter?sticas f?sicoambientais do sistema Pisa Sal, especificamente, a configura??o batim?trica, a caracteriza??o faciol?gica e a morfologia de fundo; o padr?o de circula??o das correntes de mar?s e das propriedades termohalinas; as zonas de eros?o e sedimenta??o, o volume de material erodido e suas rela??es com a hidrodin?mica; o transporte de sedimentos, a idade dos sedimentos e a taxa de sedimenta??o. Para isso, foram realizados levantamentos, meteorol?gico, batim?trico, sonogr?fico, oceanogr?fico (correntes e propriedades termohalinas), topogr?fico, amostragem de sedimentos de fundo e suspens?o e data??o por 14C e 210Pb. O sistema Pisa Sal faz parte do complexo estuarino lagunar Galinhos-Guamar?, localizado no litoral setentrional do estado do Rio Grande do Norte, no munic?pio de Galinhos-RN, uma regi?o sob influ?ncia da ind?stria salineira, carcinicultura e ind?stria petrol?fera. As informa??es meteorol?gicas definem para regi?o um clima seco com temperatura elevada, precipita??o baixa e ventos fortes e constantes que influenciam sobremaneira nas altera??es ambientais do sistema. O sistema Pisa Sal apresenta pequenas dimens?es (extens?o de 8,0 km, largura m?dia de 150 m e profundidade m?xima de - 4,23 m), perfil longitudinal regular, perfil transversal em ?V? (montante) e em ?U? (jusante), gradiente horizontal e diferentes formas de leito (fundo plano, marcas de ondas, dunas subaqu?ticas 2D e 3D, superposi??o de formas e rochoso). As f?cies sedimentares s?o representadas por sedimentos arenosos e lamosos de composi??o silic?tica, com varia??o na quantidade de gr?nulo e cascalho biodetr?ticos. Texturalmente, os sedimentos variam de areia muito grossa a silte. As correntes de mar?s variam de sim?trica a fracamente assim?tricas, com maiores velocidades durante as vazantes de siz?gia no per?odo de inverno, com dire??es que refletem a orienta??o dos canais. Os canais artificiais de despesca/drenagem (CDs) apresentam o mesmo comportamento do canal Pisa Sal, por?m com menor intensidade. As propriedades termohalinas classificam o sistema Pisa Sal como um canal de mar? com caracter?sticas hipersalinas, comportamento de um estu?rio inverso (negativo), verticalmente bem misturado, for?ado, predominantemente, pela mar?, no qual o processo de difus?o turbulenta da mar? ? respons?vel pelo transporte de sal canal acima e que provoca a redu??o da salinidade ao longo do ano. A eros?o no canal Pisa Sal e nos CDs est?o associadas ? margem c?ncava dos meandros causadas por fen?menos oceanogr?ficos, clim?ticos e antr?picos, entre os quais destacam-se: as mar?s, as correntes de mar?s, a chuva, o escoamento superficial, o vento, as ondula??es,a escava??o de canais, a infiltra??o, a composi??o e a manuten??o de taludes. O transporte de sedimentos de fundo e suspens?o ? controlado pela varia??o da velocidade das correntes de mar?s. O transporte ? mais eficiente durante as mar?s de siz?gia e nos ciclos de vazante, causando exporta??o de sedimentos. A idade dos sedimentos do canal Pisa Sal ? de 1562 ? 22 cal AP e do canal Volta do Sert?o ? 332- 432 ? 25 anos cal AP. A taxa de sedimenta??o nesses dois canais varia de 0,47 e 0,50 cm/ano, respectivamente. As atividades econ?micas da ind?stria salineira, da carcinicultura e da ind?stria petrol?fera associadas aos fen?menos naturais (temperatura do ar e n?vel de evapora??o alto, ?ndice de precipita??o baixo, regime de mesomar?, velocidade alta das correntes de mar?s e a??o dos ventos) s?o respons?veis pelas altera??es ambientais que ocorrem no sistema Pisa Sal. / The present work has as objective to study the behavior of physical-environmental characteristics of the Pisa Sal system, particularly the bathymetry, the facies characterization and the bottom morphology; the pattern of tidal currents circulation and of the termohalinas properties; the erosion and sedimentation zones, the bulk erosion and your relationships with the hydrodynamic; the sediments transport, the sediments age and sedimentation rate. The integrated data set used includes meteorological, bathymetric, sonographic, oceanographic (currents and termohalinas properties), topographic and sedimentological data, as well 14C and 210Pb datation. The Pisa Sal system is part of the Galinhos-Guamar? lagoon-estuarine complex, located in Galinhos, northern coast of the Rio Grande do Norte state. It is an area under influence of salt industry, shrimp farming and oil industry. The meteorological data classifies the area climate as dry, with high temperature, low precipitation and strong and constant winds, responsible for important environmental alterations in the system. The Pisa Sal system presents small dimensions (extension of 8,0 km, medium width of 150 m and maximum depth of -4,23 m), longitudinal profile to regulate, traverse profile in " V " (head) and in " U " (mouth), horizontal gradient, and different bedforms (e.g. ripples marks, 2D and 3D sub-aquatic dunes, flat, rocky). The sedimentary facies are represented by siliciclastic sandy and muddy sediments, with amount variation of biodetritic granule and gravel. The sediments texture varies from very coarse sand to silt. The tidal currents changes from weakly asymmetric to symmetrical, with higher speeds during the ebb-spring tide in the winter period, and directions reflecting the channels orientation. The drainage artificial channels (CDs) present the same behavior of the Pisa Sal channel, however with smaller intensity. The thermohaline properties classify the system as a tidal channel with hyper-saline characteristics, behavior of an inverse estuary (negative estuary), vertically very mixed, tidal forced, where the turbulent diffusion process is responsible for the salt transport and by the salinity reduction over the year. The Pisa Sal channel and CDs erosion are associated to the concave margin of the meandring channel caused by oceanographical, climatic and anthropic phenomena, which stand out: tides, tidal currents, rain, superficial drainage, winds, small waves, channels excavation, infiltration, composition and slope maintenance. The transport of bottom sediments and suspension is controlled by the speed variation of tidal currents. It is more efficient during the spring tides and in the ebb cycles, causing sediments exports. The age of the sediments of the Pisa Sal channel is 1562 ? 22 cal years AP and of the Volta do Sert?o channel is 332-432 ? 25 cal years AP. The calculated sedimentation rates in these two channels was 0,47 and 0,50 cm/year, respectively. The economical activities of the salt industry, shrimp farming and oil industry associated to the natural phenomena (temperature of the air and high evaporation level, low precipitation index, mesotidal conditions, high speed of the tidal currents and winds) are responsible for the environmental alterations in the Pisa Sal system.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-03T20:42:55Z No. of bitstreams: 1 JoseEdsonDeAlmeidaJunior_DISSERT.pdf: 6070806 bytes, checksum: b15852e13e5be71af8ab041cf03063b8 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-17T00:14:16Z (GMT) No. of bitstreams: 1 JoseEdsonDeAlmeidaJunior_DISSERT.pdf: 6070806 bytes, checksum: b15852e13e5be71af8ab041cf03063b8 (MD5) / Made available in DSpace on 2017-11-17T00:14:16Z (GMT). No. of bitstreams: 1 JoseEdsonDeAlmeidaJunior_DISSERT.pdf: 6070806 bytes, checksum: b15852e13e5be71af8ab041cf03063b8 (MD5) Previous issue date: 2017-08-18 / O presente trabalho tem como objetivo a avalia??o multitemporal de curto prazo da retra??o numa fal?sia da Forma??o Barreiras, na ?rea do Centro de Lan?amento Barreira do Inferno (CLBI), localizada no litoral oriental do Estado do Rio Grande do Norte (RN). Os estudos foram conduzidos entre agosto de 2016 e fevereiro de 2017, com a utiliza??o do Laser Esc?ner Terrestre (LT), aparelho que utiliza o pulso laser para fazer o mapeamento da fal?sia. A primeira etapa do estudo usou os dados da nuvem de pontos levantada em 21 de agosto de 2016, para a constru??o de 10 Modelos Digitais do Terreno (MDT) em quatro diferentes softwares, para a sele??o do m?todo interpolador que melhor representa a superf?cie estudada. A segunda etapa consistiu na caracteriza??o da fal?sia quanto ao seu principal indutor erosivo, atrav?s da utiliza??o de 30 perfis transversais a face da fal?sia obtidos a partir dos MDTs, gerados na etapa anterior, resultando numa subdivis?o da fal?sia em 5 setores de acordo com esta caracteriza??o. As avalia??es e quantifica??o da eros?o total e da taxa de retra??o foram conduzidas a partir da compara??o entre os MDTs e perfis transversais gerados em cada um dos levantamentos. Os resultados mostraram que a fal?sia apresentou uma retra??o de aproximadamente 6 cm com uma eros?o total de 333 m? no per?odo de estudo. O resultado tamb?m mostrou a import?ncia de se avaliar a confiabilidade da nuvem de pontos com rela??o a presen?a de vazios, ocasionados por sombreamentos durante os levantamentos, que podem ser fontes de erros significativos. O estudo desta fal?sia se faz importante por ser o primeiro a utilizar o LT neste tipo de forma??o, como tamb?m por representar uma nova ferramenta para o entendimento da din?mica costeira. / This research aims a short-term multi-temporal evaluation of the seacliff retreat of the Barreiras Formation, in the Barreira do Inferno Launch Center (CLBI, in Portuguese) located in the eastern coast of Rio Grande do Norte (RN), Brazil. The studies were conducted between August 2016 and February 2017 through a Terrestrial Laser Scanning (TLS), which is equipment that utilizes a pulsed laser to map seacliffs face. The first phase of the study used the point cloud generated on August 21, 2016, for the construction of 10 Digital Elevation Model (DEM) via four different softwares for selecting the interpolation method that best represents the studied surface. The second phase was the description of the seacliff according to its main erosive cause through 30 transversal seacliff face profiles obtained through the DEM generated in the previous phase. It led to a subdivision of the seacliff in 5 segments according to its description. The evaluation and quantification of the net erosion and the retreat rate were conducted through comparing the DEMs with the transversal profiles generated. The results expressed that the seacliff had a retreat of approximately 6 centimeters with a net erosion of 333 m? during the study period. It was also observed the importance of evaluating the reliability of the point cloud because of the presence of blanks due to the shading during the data collection, which may cause significant errors. The evaluation of this seacliff was relevant not only because it was the first to be done through TLS in this type of formation, but also because it represents a new way for understanding the coast dynamic.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-03T20:42:56Z No. of bitstreams: 1 RicardoCarlosCarvalho_DISSERT.pdf: 8876654 bytes, checksum: 873ee57ce197f3616f10db3df1745024 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-17T00:25:46Z (GMT) No. of bitstreams: 1 RicardoCarlosCarvalho_DISSERT.pdf: 8876654 bytes, checksum: 873ee57ce197f3616f10db3df1745024 (MD5) / Made available in DSpace on 2017-11-17T00:25:46Z (GMT). No. of bitstreams: 1 RicardoCarlosCarvalho_DISSERT.pdf: 8876654 bytes, checksum: 873ee57ce197f3616f10db3df1745024 (MD5) Previous issue date: 2017-08-29 / A produ??o de informa??es do meio f?sico sobre determinada regi?o tem papel relevante para o aproveitamento racional do solo, podendo auxiliar na preserva??o do ecossistema, no desenvolvimento de obras mais eficazes e na prote??o contra a perda de solo. No litoral oriental do Rio Grande do Norte e inserido na Regi?o Metropolitana de Natal, localiza-se o Centro de Lan?amento da Barreira do Inferno, unidade institucionalmente protegida pela For?a A?rea Brasileira. A fim de proporcionar diretrizes de planejamento, este trabalho avaliou e mapeou os elementos geoambientais ligados aos processos erosivos h?dricos, permitindo a an?lise de suscetibilidade dos solos ? eros?o laminar na ?rea militar. Foram utilizadas t?cnicas de Geoprocessamento, em ambiente de Sistema de Informa??es Geogr?ficas (SIG) na an?lise qualitativa de mapas por t?cnica multicrit?rio aditiva. Foram realizadas visitas de campo, an?lises de imagens orbitais e avalia??o de dados climatol?gicos. Com a compara??o dos diversos produtos cartogr?ficos gerados atrav?s de ?lgebra de mapas, foi poss?vel avaliar o potencial erosivo da ?rea. Foi observado que em decorr?ncia da aus?ncia de a??es antr?picas predat?rias, recai sobre os atributos do meio f?sico as maiores relev?ncias para a an?lise da eros?o. Vistorias locais identificaram processos de ravinamento na ?rea das fal?sias e a t?cnica adotada mostrou-se adequada e eficiente para a representa??o espacial do potencial erosivo. / The production of information about the physical environment in a given region has a relevant role for the rational use of the soil, which can help to preserve the ecosystem, to develop more efficient works and to protect against soil loss. On the eastern coast of Rio Grande do Norte and located in the Metropolitan Region of Natal, is located the Launch Center of the Barreira do Inferno, an unit institutionally protected by the Brazilian Air Force. In order to provide planning guidelines, this work evaluated and mapped the geoenvironmental elements related to the water erosion process, allowing the analysis of soil susceptibility to laminar erosion in the military area. Geoprocessing techniques were used in a Geographic Information System (GIS) environment in the qualitative analysis of maps by additive multicriteria technique. Field visits, orbital image analysis and climatologic data evaluation were carried out. With the comparison of the different cartographic products generated through map algebra, it was possible to evaluate the erosive potential of the area. It was observed that due to the absence of predatory anthropic actions, the attributes of the physical environment have the greatest relevance for erosion analysis. Local surveys identified ravine processes in the area of the sea cliffs and the technique adopted proved to be adequate and efficient for the spatial representation of the erosive potential.