Doutorado em Oceanografia Ambiental
URI Permanente para esta coleção
Nível: Doutorado
Ano de início: 2007
Conceito atual na CAPES: 4
Ato normativo: Homologado pelo CNE(Portaria MEC Nº 609 de 14/03/2019) Publicação no DOU em 18/03/2019 Seç. 1, Pág. 63. Parecer CNE/CES nº 487/2018, Processo no 23001.000335/2018-51).
Periodicidade de seleção: Anual
Área(s) de concentração: Sistemas Costeiros e Marinhos
Url do curso: https://oceanografia.ufes.br/pt-br/pos-graduacao/PPGOA/detalhes-do-curso?id=1469
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Navegando Doutorado em Oceanografia Ambiental por Autor "Albino, Jacqueline"
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- ItemAbordagem multiescalar da variação energética de ondas e a resposta de praias de Marataízes, ES(Universidade Federal do Espírito Santo, 2023-03-23) Eguchi, Branco Mateus Murata; Albino, Jacqueline; https://orcid.org/0000-0003-2890-9227; http://lattes.cnpq.br/1609264897582182; https://orcid.org/0000-0001-9795-780X; http://lattes.cnpq.br/6848945037305152; Muehe, Dieter Carl Ernst Heino; https://orcid.org/0000-0002-6061-4034; http://lattes.cnpq.br/6017845242163890; Oliveira, Leonardo Azevedo Klumb; https://orcid.org/0000-0002-6537-210X; http://lattes.cnpq.br/2591010762995842; Oliveira, Kyssyanne Samihra Santos; https://orcid.org/0000-0003-2007-1984; http://lattes.cnpq.br/0954756171047598; Souza, Celia Regina de GouveiaHow to deal with the different time and space scales of coastal processes is a major concern in evaluate coastal impacts. In order to better comprehend these processes, it is important to understand the energy input in regional scale, such as waves and tides, and how local coastal features are able to modify this input. Despite the focus on local coastal processes, this thesis is based on series of replicable methodologies, aiming to characterize coastal processes and vulnerability in different time and space scales. First step was to determine oceanographic energy inputs for the whole region, for example, waves, astronomical tide and extreme waves. Moreover, a correlation between extreme waves parameters and the modes of climate variation El Ninõ Southern Oscillation (ENSO) e Southern Annular Oscillation (SAM). The second part of the thesis regarded to determine the effects of local ocean floor morphology on wave energy and how beaches respond to these variations. Also, a coastal susceptibility index was proposed based on wave energy variations and beach responses. Lastly, the impacts of a storm were quantified comparing beach profile changes before and after. Wave climate showed a bimodal pattern with easterly waves related to good weather and southeasterly waves associated to storms. Extreme waves presented significant height and duration of 1,72 m and 48 h, respectively. The highest values of extreme wave energy, duration and quantity occurred during neutral phase of ENSO and negative phase of SAM. In contrast, the lowest values occurred during the positive phase of both modes simultaneously. Easterly waves showed a pattern of energy increase of 30% as they propagate from deep to shallow waters. Waves coming from southeast also presented an increase of wave energy, but of only 9%. In general, all post-storm beach profiles showed no major impacts. In conclusion, extreme wave season begins in July and peaks in September. Extreme waves change from highly energetic and lasting, in early season, to more frequent but briefer, late in the season. Wave energy dissipation at shallow waters occurs differently along the coast. In the long term, beach profiles may not be able to resist to storm impacts.
- ItemEvolução sedimentar recente ao longo de uma plataforma continental contrastante de sedimentação(Universidade Federal do Espírito Santo, 2017-04-05) Silva, Alex Evaristo da; Bastos, Alex Cardoso; Albino, Jacqueline; Quaresma, Valéria da Silva; Reis, Antônio Tadeu dos; Silva, Cleverson GuizanThe present thesis is study about the sedimentary and morphological evolution in continental shelf section with distinct influence between sedimentary input and dispersion. The north-central continental shelf of Espírito Santo (Brazil) has contrasting features such as the presence of delta lobe and incised valley with exposed channels, as well as the mixed sedimentary environment marked by terrigenous dominance in the coastal areas and by rhodoliths and carbonate gravels in offshore areas. Were analyzed 186 surface sediment samples from published works, 6 piston corer that are deployed in 730 samples, and 485 km and 920 km of seismic lines boomer and stratabox source respectively. Sediments surface analysis showed the presence of distinct sedimentary regimes resulting from current and past hydrodynamic processes. Distal mud belt suggests high energy events as responsible for resuspension and redistribution of fine sediments. The surface heterogeneity is also recognized in subsurface sediments, where six sedimentary environments were recognized: fluvio-estuarine with continental dominance; inner estuarine; beach or river mouth; marine continental shelf, terrigenous shelf and prodelta. Transgressive ravinement and maximum flooding stratigraphic surfaces were observed throughout the piston corer. In terms of seismic stratigraphy, eight seismic units were identified. The pattern distribution of these units condition two distinct evolutionary models for the study area. The sedimentary evolution in the north indicates the construction of carbonate environment during MIS3, high development of transgressive fluvial deposits and presence of Doce River regressive lobe. In the south, incised valleys domain were observed, with decrease in their filling towards the basins, which suggests two distinct moments of sea level rise. The low development of the seismic units around the incised valleys suggests limited sedimentation during transgression, restricted to fluvial channel. After continental shelf flooding, carbonate sedimentation dominated the external shelf, with greater development to the south. Difference between north and south was probably conditioned by continental and continental shelf physiography and by variation of past and present sedimentary input. The Doce submerged delta presented an elongated geometry similar to main fluvial systems of the word, which indicates significant longitudinal sedimentary transport and fine sedimentary composition, corroborated by elongated orientation to the north of the sedimentary plume, and by sand-muddy submerged delta composition. Two depocenters and two seismic subunits were observed near river mouth and associated with shift of the channel. Delta sub- merge delimitation is important to scale the potential impact area of the tailings mud that reached the mouth of the Doce River on November 22 (2015) and spread over a wide area of the continental shelf. Geological faults were recognized on the continental shelf, mainly along 42 m isobaths with the same SSW-NNE orientation of lineaments in the continent. The distribution of physiographic elements, such as lobed features, high and low topographic areas, channels, escarpments and erosive grooves show distinction of the sedimentary processes along the continental shelf. Lobed features were found in the limits of the inner-medium and medium-outer continental shelf, which suggests significant sedimentary contribution during the last transgression. High topographic and escarpment were interpreted as possible paleo-coastline in the middle shelf, while distinction at height of the topographic highs on the outer shelf indicates greater development of carbonate constructions to the north. The topographic highs associated with incised valleys in the south were interpreted as reef growing along their margins. The results indicate that distribution and preservation of sedimentary environments installed on the continental shelf during Upper Pleistocene-Holocene were mainly conditioned by fluvial input, either as a direct contribution of terrigenous sediments or by inhibition in the establishment of carbonate communities. The continental geomorphology also seems to be an important indicator of the characteristics found in the continental shelf.
- ItemSedimentologia e estratigrafia quaternária dos depósitos costeiros da região de Vitória, ES(Universidade Federal do Espírito Santo, 2014-12-03) Machado, Giseli Modolo Vieira; Albino, Jacqueline; Bastos, Alex Cardoso; Silva, Cleverson Guizan; Muehe, Dieter; Baptista Neto, José Antonio; Ferreira Junior, Paulo DiasFluctuations in relative sea level during the Quaternary reveal changes in the architecture and composition of sedimentary deposits due to transgressive / regressive events, energy of the environment and, marine/continental influence. Thus, the stratigraphy has important contribution to the interpretation of these components to predict facies architecture and reconstruct the sedimentation period. Geomorphological evidence is also used to understand the coastal plain evolution. Sedimentological, geochemical and biological indicators are used to recognize the depositional paleoenvironments. The study area comprises the Quaternary coastal deposits of region of Vitória, ES. The area is characterized by a narrow coastal plain between rocks. The methodology is divided into geologic and topographic mapping, stratigraphic, morphoscopic and geochemical analysis. Geologic maps were performed by interpretation of aerial photographs, topographic maps and field trips. The stratigraphic analysis was performed by collecting sediment subsurface through deep cores (SPT) and shallow cores (vibracores). Four deep cores with 20 m drilling on the plain and three shallow cores between 2-5 m drilling on mangroves were performed. Sediments were analyzed by: particle size; organic matter and CaCO3 contents and, shell species classification. Sediments from deep core were also assessed for mineralogical composition and rounding degree, optical appearance and microtextures of quartz grains by optical and scanning electron microscope. Sediments from vibracore were also analyzed for C/N ratio. Twenty datings were performed: 19 by 14C (18 in shells and 1 in organic sediment) e 1 by LOE (quartz). Thus, this thesis aims to investigate the response of coastal sedimentary deposits resulting from fluctuations in sea level during the last 120,000 years in the region. The results contributed to the understanding of the stratigraphic evolution, the role of sea level variations in sedimentary records and the importance of geomorphological control to fill the sedimentation basin. No evidence was found, as sandy terraces associated with the maximum transgression in 120,000 years B.P. The presence of modern estuary, wetlands and beach barrier near the beach current show times of higher sea level during the Holocene. The presence of marine and estuarine shells, fragments of bioclasts, carbonate nodules, C/N ratio below 21 and quartz grains with beach maturity are indicators of marine influence on the environment. Six paleoenvironments were recognized: continental with marine influence, fluvial, bay, estuary, beach barrier and tidal channel. The textural parameters of quartz grains showed little scope of coastal grains within the sedimentation basin. The microtextures by mechanical action on the grain surface indicated predominance of grains related to the fluvial system. Microtextures by chemical action are indicators of environments influenced by marine water and low energy. The proposed evolutionary model for the area is summarized as follows: At isotope stage 5 the region of Victoria was a wide bay with low energy and free connection wit the sea. Around 38,890 ± 180 and > 50,540 years B.P. (isotopic stage 3) the records show a transgressive event in the region. At isotope stage 2, fluvial deposits dominate the plain. The surface of this deposit was dating in 36,307 ± 3292 years B.P. At isotopic stage 1, bay facies dated between 9,448 ± 38 and 7,154 ± 157 cal years B.P., return to occupy the Victoria Bay during transgression, which evolve to estuarine facies to the present. The exposed part a beach barrier is formed around 7,930 ± 150 cal years B.P. and subsequently drowned. Estuary remains with the regression. Some interior areas are transformed into wetlands while, areas near the sea respond to the lowering of sea level by building a beach barrier started at 3,136 ± 185 and 3,201 ± 175 cal years B.P., forming the Camburi plain.