José M.L. Dominguez

• PhD
• Professor (Full) at Federal University of Bahia

RESUMO Os deltas do litoral oriental do Brasil são bons exemplos de deltas dominados/influenciados por ondas. Neste padrão deltaico a geomorfologia é marcada por cristas de praia, que mostram a evolução construtiva do delta, a partir de sucessivos registros de paleopraias. Este processo é controlado pelo abaixamento do nível do mar durante a transi...

Souza et al. (2022) based on grain size analyses, Optical Stimulated Luminescence (OSL) ages in fluvial sediments, and regional topography affirmed that most of the Paraiba do Sul River Delta (PSRD) has been deposited during the Little Ice Age (LIA). Souza et al. (2022) also inferred that after the LIA, PSRD presents shoreline erosion, using OSL un...

The impacts of the 2019 Brazilian coast oil spill on mesozooplankton community were investigated using data of before and after spill off the coast of Salvador. The presence of oil droplets was detected in all samples collected in the continental shelf of Salvador, after oil spill (Oct/2020). The total density of oil droplets ranged from 5.03 to 20...

This chapter presents a synthesis of the existing knowledge on the wave-dominated deltas of Brazil (Parnaíba, São Francisco, Jequitinhonha, Doce, Paraíba do Sul). One of these, Parnaíba, is also strongly influenced by tides. These deltas are subject to different climatic zones, tidal regimes and wave climate, and different degrees of regulation and...

Mangrove swamps are found in intertidal zones along tropical and subtropical regions around the world. The spatial distribution of these coastal swamps is initially controlled by pristine landscape morphology and coastal processes related mainly to tidal ranges, currents, and salinity. This chapter presents the subdivision of the Brazilian mangrove...

Ongoing climate change has the potential to severely affect the tropical marine environments of Brazil. This chapter provides a brief overview of these environments with a major focus on deltas, mangrove forests, reefs, continental shelves, the zoo- and ichthyoplankton communities of pelagic ecosystems and major processes operating in the Tropical...

Continental shelves are areas of high heterogeneity that are poorly understood and increasingly influenced by anthropic activities. The tropical passive continental shelf of northeastern Brazil is the narrowest in the country and in some stretches is among the world’s narrowest. Narrow continental shelves are unusual features on passive continental...

RESUMO. Potencias consequências das mudanças climáticas ao longo de uma região costeira tropical do Brasil. O presente estudo avalia qualitativamente os potenciais impactos induzidos pelas mudanças climáticas ao longo de uma faixa litorânea do estado da Bahia, a qual apresenta grande diversidade geomorfológica e exuberante beleza cênica. Entre esse...

This paper proposes research priorities on the coastal ecosystems of the East-Northeastern region of Brazil (State of Bahia), based on an overview of the global changesrelated impacts disturbing these ecosystems. We use data on reef monitoring, sea surface temperatures, fisheries and public policies related to marine and natural resources conservat...

The response of ichthyoplankton assemblage to the oil spill in the coastal region of Brazil Northeaster on August 2019 was investigated using data of before and after spill from plankton survey off the coast of Salvador. Differences in fish egg and larvae density was evident in all samples collected in the continental shelf of Salvador, after oil s...

Os deltas são relevantes para a vida e o desenvolvimento econômico, social e ambiental de um país. Os deltas dos rios estão entre os ambientes mais vulneráveis à subsidência de terras. Processos de subsidência são caracterizados pelo movimento de uma porção da superfície da Terra, provocando um afundamento súbito ou recalque gradual do terreno. Os...

The São Francisco River is the fourth longest river in South America and one of the most regulated. Severe coastal erosion has affected the delta shoreline since 1985, leading to the complete destruction of Cabeço village between 1997 and 1999. In this study, we mapped and radiocarbon dated the beach ridge sets occurring on the delta plain and perf...

Submarine canyons play a major role in sediment transfer to the deep sea. When connected with fluvial systems, they can produce large submarine fans, whose sandy bodies have a high potential as petroleum reservoirs. Although canyon-river connections are common on passive margins during lowstands, they are rare during highstands. So far, the only ca...

The continental shelf adjacent to the municipality of Salvador (CSS), state of Bahia, Brazil, is one of the narrowest in the world (8 km) although it is located in a passive margin. This shelf is also shallow, with low accommodation space and sediment input. During the Quaternary, the area was exposed most of the time to subaerial conditions. This...

The São Francisco River is one of the most important rivers in Brazil. The wave-dominated delta at its mouth includes a well-developed muddy clinoform on the adjacent shelf. This study aimed to understand sedimentary organic matter (OM) distribution and the relative contribution of terrestrial/fluvial and marine sources. A dense and evenly distribu...

The present study used shallow high-resolution seismic surveys to characterize the architecture and stratigraphic evolution of the last depositional sequence of the São Francisco Delta (SFDS). The sequence was accumulated within a bathymetric low (BL) on the shelf located in front of the São Francisco river. This antecedent topography provided addi...

The Santo Antônio Bank (SAB) is a large sand accumulation on the inner continental shelf of Salvador City, next to Todos os Santos Bay (TSB) entrance, eastern Brazilian coast. Since the sixteenth century, chroniclers report this feature as a navigational hazard. Previous studies have tried to determine the origin and volume of sands stored within t...

Processos de subsidência são caracterizados pelo movimento de uma porção da superfície da Terra na qual resulta no rebaixamento do terreno. Os ambientes sedimentares deposicionais, como é o caso dos deltas, são propensos à subsidência devido à compactação de sedimentos. O objetivo principal deste trabalho é o desenvolvimento de um projeto geométric...

Abstract The continental shelf off Salvador city faces the third largest metropolitan area of Brazil. It is also the narrowest shelf (8 km wide) in the entire Brazilian continental margin. The continental shelf off Salvador city (CCS) is characterized by an uneven topography with high and low regions usually oriented obliquely to the shoreline. The...

As sequências sedimentares marinhas do Quaternário têm sido amplamente estudadas pela sísmica marinha de reflexão rasa, a qual se baseia na propagação das ondas sísmicas, com o intuito de realizar imagens das feições geológicas de subsuperfı́cie. Dados sísmicos em associação com furos de sondagens SPT podem produzir informações sobre litologia, coe...

The present study used shallow high-resolution seismic surveys to characterize the architecture and stratigraphic evolution of the last depositional sequence of the São Francisco Delta (SFDS). The sequence was accumulated within a bathymetric low (BL) on the shelf located in front of the São Francisco river. This antecedent topography provided addi...

O perfil longitudinal típico dos grandes rios é côncavo entre a nascente e a foz. Desvios deste padrão típico com a presença de quebras de declive indicam a atuação de processos tectônicos, eustáticos ou variações litológicas no leito do rio. O presente estudo incide no sector médio do rio São Francisco, o quarto maior rio da América do Sul. Este r...

O delta do rio São Francisco é uma planície arenosa de idade quaternária construída em um baixo estrutural da bacia de Sergipe-Alagoas, conhecido como Baixo do São Francisco. O limite interno do delta do São rancisco é marcado por escarpas retilíneas, que o separam da Formação Barreiras adjacente e possuem traçado coincidente com importantes falhas...

The shallow (<60m) and narrow (<40km) shelf off east-northeast Brazil makes it difficult to investigate the effects of the last eustatic sea-level rise in the development of the brazilian deltas. In addition, high wave energy results in greater shear stress at the bottom, precluding the development of deltaic clinoforms exhibiting a classical sigmo...

The São Francisco River delta is a Quaternary sandy plain built on a structural low of the Sergipe-Alagoas Basin, known as the São Francisco Low. The inner limit of the São Francisco River delta is defined by rectilinear cliffs between the delta plain and the Barreiras Formation, which coincide with important faults delimiting the São Francisco Low...

O estudo das partículas biogênicas dos sedimentos de fundo da Baía de Todos os Santos (BTS) foi realizado com o objetivo de investigar as biofácies como um instrumento de caracterização do ambiente sedimentar da baía. Através da análise de agrupamento foi possível estabelecer quatro biofácies bem definidas. Estas biofácies permitiram verificar uma...

The Brazilian coastline extends from 8500 km from Northern Hemisphere 4° to the 34° in South Latitude, covering different natural landscapes. By landscapes, we understand the relationship between geomorphological and geological conditions and vegetation cover, and process involving climate and oceanography that shape the landscapes. This chapter pr...

Foraminifera distribution in surface sediment of the continental shelf is controlled by several environmental factors. Expansion and spreading of fluvial plumes significantly change environmental conditions at shelf areas facing river mouths. The present work contributes with an in situ reference study on the spatial distribution of foraminiferal a...

O objetivo deste trabalho foi verificar como as famílias de Polychaeta, que ocorrem na Laguna Principal do Canal do Parapuca, se relacionam com este ambiente. Foram amostrados 6.236 indivíduos distribuídos em 18 famílias, das quais Spionidae e Capitellidae foram as mais abundantes. Não foi encontrada variabilidade temporal para a densidade total de...

The coastline of the State of Paraíba is approximately 145 km long. The sediment deficient character of this coast, with reduced sediment input, has resulted in long-term shoreline retreat. As a consequence, erosion of local sediment sources, such as the coarse grained Barreiras Formation, provided most of the sediment to the shoreline. These aspec...

The beaches of Sergipe and Alagoas illustrate the role of geological inheritance and the effect of sediment grain size in controlling beach morphodynamics. Overall, under the same wave energy levels, beaches located on prograding sections of the coast have finer sediments and are dissipative, whereas on coastal sections starved of sediments the san...

The state of Bahia with approximately 1000 km of shoreline, a great heterogeneity of exposed rock types and subjected to varying degrees of sediment supply allowed us to investigate the controls exerted by these factors in determining the beach types. The modal morphodynamic states of the beaches of Bahia is dominantly controlled by sediment grain...

Processos de subsidência caracterizam-se pelo movimento de uma porção da superfície física da terra, podendo provocar um afundamento súbito ou recalque gradual do terreno. Esses processos geralmente estão relacionados com algum fenômeno geológico que dependendo do grau de intensidade das ocorrências podem causar sérios impactos nas regiões afetadas...

The integration of methods for calculating soil loss caused by water erosion using a geoprocessing system is important to enable investigations of soil erosion over large areas. Geographic information system (GIS)-based procedures have been used in soil erosion studies; however in most cases it is difficult to integrate the functionality in a singl...

The integration of methods for calculating soil loss caused by water erosion using a geoprocessing system is important to enable investigations of soil erosion over large areas. Geographic information system (GIS)-based procedures have been used in soil erosion studies; however in most cases it is difficult to integrate the functionality in a singl...

The Santo Antônio Bank (SAB) is a positive feature of the Inner Continental Shelf of Salvador, adjacent to the entrance of the Todos os Santos Bay. Some studies have indicated its potential use as a deposit of siliciclastic sediments for the nourishment of urban beaches in Salvador. However, the methods that have been applied so far have not been a...

During the Quaternary, sea level variations combined with sediment input from rivers resulted in the development of fluvial, estuarine and deltaic environments in the valleys of large rivers. The delta of the São Francisco River is internationally considered to be an example of a wave-dominated delta. The present study had the objective of investig...

A checklist of Gymnolaemata bryozoans from Bahia State, northeast Brazil, is presented. Specimens are lodged in the Bryozoa collection of the Museu de Zoologia at the Universidade Federal da Bahia (UFBA). The checklist comprises 135 species in 54 families, the majority belonging to the order Cheilostomata.

The Discovery Coast was the first landscape sighted by Portuguese explorers when they arrived in Brazil in 1500. This region’s geomorphology is marked by the predominance of coastal tablelands, sustained by Miocene sediments of the Barreiras Formation, which were primarily deposited in tidal plains, tidal channels, and braided river systems. These...

The Discovery Coast was the first landscape sighted by Portuguese explorers when they arrived in Brazil in 1500. This region’s geomorphology is marked by the predominance of coastal tablelands, sustained by Miocene sediments of the Barreiras Formation, which were primarily deposited in tidal plains, tidal channels, and braided river systems. These...

This chapter discusses the Todos os Santos Bay (Baía de Todos os Santos—BTS), one of the Brazil’s largest embayments. Salvador, which is one of the largest metropolises in the country and was Brazil’s first capital, is located on its shores. The bay is a feature of erosional character, with sub-bays, several islands, hard bottoms, and abrasion terr...

O presente trabalho visa identificar as alterações na configuração da linha de costa e sua relação com a ocupação antrópica da Atalaia Velha e do Mosqueiro, Aracaju-SE. A metodologia consistiu no mapeamento multitemporal da linha de costa e da ocupação antrópica no programa de geoprocessamento ArcGis© 9.3.1 e, em trabalhos de campo. Este estudo mos...

Ebb-tidal-delta and coastal erosion in the beaches of Atalaia Velha and Mosqueiro, Aracaju, SE The shorelines associated with river mouths are highly unstable environments due to the strong influence of waves, tides, currents, river discharges and the dynamics of ebb-tide-deltas. This work aims to identify the mechanisms responsible for changes occ...

As concentrações de metais (Cromo – Cr, Cobre – Cu, Níquel – Ni, Chumbo – Pb, Zinco – Zn, Ferro – Fe, Manganês – Mn e Alumínio – Al), de matéria orgânica e a granulometria foram determinadas nas amostras de sedimentos superficiais coletadas em 77 estações amostrais, na plata- forma continental entre Itacaré e Olivença, no litoral sul da Bahia, a fi...

O presente trabalho trata da avaliação do potencial de prejuízos econômicos em função da densidade de urbanização por construções fixas à beira-mar e da sensibilidade à erosão na Costa do Cacau, Bahia. Constatou-se que 48,78% da região à beira-mar apresentam um potencial baixo de prejuízos econômicos face à erosão costeira, o que é encontrado em si...

RESUMO. O presente estudo propôs caracterizar o ambiente sedimentar atual da BTS com base na comparação dos componentes biogênicos dos sedimentos amostrados em 1974 e em 1997. Os resultados mostraram que os biogênicos identificados foram praticamente os mesmos na fração cascalho e na areia em ambas as amostragens. Entretanto, foram verificadas dife...

Traini, C.; Schrottke, K.; Stattegger, K.; Dominguez, J.M.L.; Kacenelenbogen Guimaraes, J.; Vital, H.; D'avila Beserra, D., and Aquino da silva, A.G., 2012. Morphology of subaqueous dunes at the mouth of the dammed river Sao Francisco (Brazil). Journal of Coastal Research, 28(6), 1580-1590. Coconut Creek (Florida), ISSN 0749-0208. Economic developm...

The wetlands of the Itapicuru river coastal plain are the most important of all the Northern littoral of the state of Bahia. The origin and evolution of these wetlands are intrinsically related to the Quaternary sea level changes. Along the coastline of Brazil sea level has dropped 3 to 4m during the last 5.600 years BP. Estuaries and lagoons forme...

A plataforma continental baiana apresenta características bastante variadas, resultado da interação de uma herança geológica com as variações eustática do nível do mara durante o Quaternário e processos oceanográficos. Conquanto o Estado da Bahia possua a plataforma continental mais extensa do Brasil, em termos de comprimento, o nível de conhecimen...

Using numerical modeling, this work estimates sediment dispersion patterns caused by the incidence of waves in five distinct coastline contours of the Jequitinhonha River delta plain during the Late Holocene. For this study, a wave climate model based on the construction of wave refraction diagrams relative to the current boundary conditions as def...

The Bebedouro Formation (Fm.) is a Neoproterozoic glaciogenic succession at the base of the Una Group on the São Francisco Craton. The glaciogenic sequence is composed of diamictites, pelites and sandstones with a variety of lithofacies that are grouped into four associations: (i) ice-contact, (ii) pro-glacial, (iii) ice-rafted and (iv) aeolian (ex...

The great physiographic diversity of the Dendê Coast favors the production of different beach sediment types, including bioclastic components. In this study 74 beach samples collected at 2 km intervals were used to evaluate beach sediment composition. For each sample, 300 grains were identified for each grain size class coarser than 0.125 mm, using...

The great physiographic diversity of the Dendê Coast favors the production of different beach sediment types, including bioclastic components. In this study 74 beach samples collected at 2 km intervals were used to evaluate beach sediment composition. For each sample, 300 grains were identified for each grain size class coarser than 0.125 mm, using...

The continental shelf off Salvador (PCS) is the narrowest in Brazil. It has been intensively used for fishing, disposal of domestic effluents and sediments dredged from the Aratu and Salvador ports, recreation (scuba diving), besides an increasing interest in submarine archaeology. The PCS has also important accumulations of siliciclastic sands, wh...

Camamu Bay, an Environmentally Protected Area, may be affected by the pressures of tourism and oil exploration in the adjacent continental platform. The current quality of the mangrove sediments was evaluated by porewater bioassays using embryos of Crassostrea rhizophorae and by an analysis of benthic macrofauna and its relationships with organic c...

Camamu Bay (Bahia, Brazil) is an Environmental Protected Area with mangroves of economic and ecological importance. The objective of this study was to elucidate, through the distribution of the benthic macrofauna and its relationships with trace metals and bioavailabilty, if the current quality of the mangrove sediments of Camamu Bay is acceptable...

The mobility of surface sediments on the continental shelf has been investigated in this study by the use of a simple model which relates significant wave height and period (Hsig and Tsig) along with median sediment grain size (D50). For the Hsig and Tsig values used, sediment mobilization occurs to a maximum depth of approximately 60m and encompas...

This study presents a preliminary analysis of biogenic composition of bottom sediments collected in the Salvador Channel, one of the main accesses to the Todos os Santos Bay. In order to characterize the biogenic composition and identify the groups of organisms contributing to the production of recent carbonatic sediment, samples of bottom sediment...

The Doce River strandplain, located on the east coast of Brazil, comprises Holocene and Pleistocene beach-ridge terraces, fluvial, lagoonal, freshwater swamp and mangrove swamp deposits. The Holocene evolutionary history of this strandplain was controlled by the interaction of sea-level changes, riverine sediment supply and wave reworking. The rise...

Despite the existing proposals for sustainable use of the Brazilian coast, there are few mechanisms for quantification and qualification of anthropogenic impacts. For instance, the Projeto Orla (MMA, 2006) defines typologies of coastline classification, taking into account aspects of the landscape such as originality, human population density and l...

This chapter presents a review of the current state of knowledge of the strandplains (regressive barriers) present along the coast of the state of Bahia, located in the central portion of the Brazilian coastal zone (Fig. 8.1). The state of Bahia has the longest coastline in Brazil, totaling almost 1,000 km. This coastal zone presents us with the op...

The State of Bahia, Brazil’s southern region occupation in the 20th century was directly linked to ascension of commercial cacao cultivation, maintaining its hegemony until 1970. Changes began after highway BR-101 was implanted in 1971, becoming even more expressive in 1980, with new forms of land utilization such as lumber pole, cattle raising exp...

Este livro agrega informações que subsidiam o entendimento da oceanografia da Baía de Todos os Santos. Propicia o embasamento científico para a interpretação de sua situação atual com vistas ao planejamento de futuros projetos de pesquisa e de ações gerenciais que venham a garantir a recuperação e a preservação de sua riqueza natural, como recifes...

This paper shows that the location of the shoreface bank reefs along the northeastern and eastern coasts of Brazil, in a first order approximation, seem to be controlled by the deficit of sediment in the coastal system. The sediment transport pattern defined by a numerical modeling of wave refraction diagrams, representing circa 2000 km of the nort...

In this study the patterns of sediment dispersion along part of the southern coast of Bahia, known as the Cacao Coast, were defined, starting with a numerical modeling on wave refraction diagrams. These patterns are able to reproduce net longshore drift direction of sediments in sections where there are geomorphic evidences of the longshore drift d...

NOGUEIRA, R.X.S. and DOMINGUEZ, J.M.L., 2007. Mapping of land cover changes at Conde municipality coastal zone, State of Bahia, Brazil, using medium resolution satellite data. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 33 - 37. Gold Coast, Australia, ISSN 0749.0208 The easier access to medium resolu...

The continental shelf of the São Francisco craton is the narrowest in Brazil. Average widths average 5 to 25 km. The shelf break is located at a 45m depth. As a result in the last 400,000 yrs, the continental shelf was entirely exposed to subaerial conditions during 85% of the time with the rivers emptying directly into the upper slope and therefor...

This paper is in Portuguese. High-frequency seismic data (2 to 12 kHz) collected on the continental shelf offshore the Almada River Mouth (Bahia State, Brazil) was used to map the Holocene sedimentary layers above the acoustic basement. The produced isopach map was integrated with the bathymetry and with the superficial sediment distribution of of...

This paper is in Portuguese. The reconnaissance of the sedimentary cover on the continental shelf has academic (study the origin of sediments) and economic (installation of engineering structures) implications. There are direct and indirect methods to collect seabed sediment data. Dredging gives direct information of the collected sediments while h...

This paper is in Portuguese. This paper presents the results of a side scan sonar survey integrated to surface sediment sampling carried out at the continental shelf of Conde municipality, Northern state of Bahia. The integration of these two sources of information allowed the construction of a map of the continental shelf for this area depicting t...

The Sao Francisco River mouth is undergoing a severe erosional process that has caused the destruction of a village and the partial immersion of a lighthouse constructed in 1856. The present work comprises an historic time evaluation of this phenomenon based on the analysis of the sediment dispersion patterns caused by waves along three distinct sh...