scholarly journals WAVE CLIMATE OFF RIO DE JANEIRO

1988 ◽  
Vol 1 (21) ◽  
pp. 17 ◽  
Author(s):  
Maria Helena Severo De Souza ◽  
Carlos Eduardo Parente Ribeiro
Keyword(s):  
Environmental Conditions ◽  
Rio De Janeiro ◽  
Wave Climate ◽  
Offshore Area ◽  
Production Region ◽  
Wave Data ◽  
Campos Basin ◽  
The World ◽  
Janeiro State ◽  
Water Depths

The offshore area northern off Rio de Janeiro State (fig. 1a) is a big oil production region known as Campos basin. In some locations oil is being exploited in water depths of A00 meters, among the largest in the world and new promising fields shall be exploited above 1000 meters. The design and operation of structures and other oceanic systems for such depths is being a big challenge for ocean engineers and the knowledge of environmental conditions is of paramount importance. Wave data is still scarce in the area mainly that concerned with directional spectra.

scholarly journals Herpetofauna of an Atlantic rainforest area (Morro São João) in Rio de Janeiro State, Brazil

2008 ◽  
Vol 80 (2) ◽  
pp. 291-300 ◽  
Author(s):  
Mauricio Almeida-Gomes ◽  
Davor Vrcibradic ◽  
Carla C. Siqueira ◽  
Mara C. Kiefer ◽  
Thaís Klaion ◽  
...  
Keyword(s):  
Species Composition ◽  
Rio De Janeiro ◽  
Sampling Methods ◽  
Abundant Species ◽  
Study Data ◽  
Tropical Regions ◽  
Plot Sampling ◽  
Reptile Species ◽  
The World ◽  
Janeiro State

We studied the herpetofaunal community from the Atlantic forest of Morro São João, in Rio de Janeiro State, Brazil, and present data on species composition, richness, relative abundance and densities. We combined three sampling methods: plot sampling, visual encounter surveys and pit-fall traps. We recorded sixteen species of amphibians and nine of reptiles. The estimated densities (based on results of plot sampling) were 4.5 ind/100 m2 for amphibians and 0.8 ind/100 m² for lizards, and the overall density (amphibians and lizards) was 5.3 ind/100 m². For amphibians, Eleutherodactylus and Scinax were the most speciose genera with three species each, and Eleutherodactylus binotatus was the most abundant species (mean density of 3.0 frogs/100 m²). The reptile community of Morro São João was dominated by species of the families Gekkonidae and Gymnophtalmidae (Lacertilia) and Colubridae (Serpentes). The gymnophtalmid lizard Leposoma scincoides was the most abundant reptile species (mean density of 0.3 ind/100 m²). We compare densities obtained in our study data with those of other studied rainforest sites in various tropical regions of the world.

K-Ar AND Rb-Sr DATING OF NANOMETER-SIZED SMECTITE-RICH MIXED LAYERS FROM BENTONITE BEDS OF THE CAMPOS BASIN (RIO DE JANEIRO STATE, BRAZIL)

2020 ◽  
Vol 68 (5) ◽  
pp. 446-464
Author(s):  
Norbert Clauer ◽  
Jan Środoń ◽  
Amélie Aubert ◽  
I. Tonguç Uysal ◽  
Theofilos Toulkeridis
Keyword(s):  
Rio De Janeiro ◽  
Campos Basin ◽  
Mixed Layers ◽  
Janeiro State

AMS-14C measurements for the carbonate platform of the offshore Campos Basin, Rio de Janeiro State, Brazil

2000 ◽  
Vol 172 (1-4) ◽  
pp. 589-591 ◽  
Author(s):  
Melayne M. Coimbra ◽  
Cátia F. Barbosa ◽  
Abı́lio Soares-Gomes ◽  
Cleverson G. Silva ◽  
Aristóteles Rios-Netto ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Carbonate Platform ◽  
Campos Basin ◽  
Janeiro State

scholarly journals QUÍMICA MINERAL E IDADES U-Pb DE MONAZITAS DE PLACERS MARINHOSDA REGIÃO NORTE FLUMINENSE

2012 ◽  
Author(s):  
Elizabeth Kerpe Oliveira ◽  
Bernhard Bühn ◽  
José Marques Correia Neves ◽  
Alexandre de Oliveira Chaves ◽  
Mário Luiz de Sá Carneiro Chaves
Keyword(s):  
Rio De Janeiro ◽  
Regional Metamorphism ◽  
Mineral Chemistry ◽  
Campos Basin ◽  
Icp Ms ◽  
Placer Deposits ◽  
Homogeneous Composition ◽  
Janeiro State ◽  
Geological Context

Este trabalho abrange o estudo de química mineral e geocronologia U-Pb de grãos de monazita, composicionalmentehomogêneos, provenientes de várias jazidas explotadas pelas Indústrias Nucleares do Brasil (INB) em placers marinhos da região de Buena,litoral norte fluminense. A área está localizada na região da Bacia de Campos e, geologicamente, pertence à Província TectônicaMantiqueira, que representa um sistema orogênico neoproterozóico desenvolvido na borda sudeste do Cráton São Francisco. As idades UPbobtidas por LA-ICP-MS abrangem um intervalo entre 486 Ma e 579 Ma, sendo que as idades mais jovens são de grãos de monazitas ricosem cério. Por outro lado, as idades mais antigas correspondem a grãos de monazitas com tendência à composição cheralítica, nos quaisocorre um enriquecimento principalmente em CaO e ThO2. A comparação dessas idades com informações geológicas regionais permiteinferir as suítes G2 (granitos granada-biotita gnaisse foliado) e G3 (leucogranitos, não deformados, encaixados em G2) como rochas-fonteda população de monazita mais antiga, suítes estas relacionadas com o arco sin-colisional desenvolvido simultaneamente aometamorfismo e à deformação regional Neoproterozóica. Já a população de monazita mais jovem pode ser proveniente de corposgraníticos das suítes G4 (plútons magmáticos zonados) e G5 (ballons magmáticos), representantes das fases pós-colisionais.Palavras-chave: Monazita, quimica mineral, idades U-Pb, LA-ICP-MS. ABSTRACTMINERAL CHEMISTRY AND U-Pb AGES OF MONAZITE FROM MARINE PLACERS OF THE NORTHERN RIO DE JANEIRO STATE - Thisresearch focusses on mineral chemistry and U-Pb geochronology of monazite grains of homogeneous composition, originating from severalmarine-placer deposits exploited by Indústrias Nucleares do Brasil (INB), in Buena, northern Rio de Janeiro State. Buena is located close tothe Campos Basin and related to the geological context of the Mantiqueira Tectonic Province, which represents a neoproterozoic orogenicsystem developed in the southern edge of the São Francisco Craton. Uranium-Pb ages by LA-ICP-MS fall between 486 Ma and 579 Ma.Younger ages are related to Ce-rich monazite. Older ages correspond to monazite with cheralitic signature, chiefly enriched in CaO andThO2. These ages are interpreted in the geological context of the Mantiqueira Tectonic Province as rock sources for older monazites, whichare correlated to syn-collisional arc simultaneously developed together the neoproterozoic regional metamorphism and deformation. Theyounger monazites came from granitic plutons of G4 and G5 suites, related to post-collisional phases.Keywords: Monazite, mineral chemistry, U-Pb ages, LA-ICP-MS.

Two new Hyalonema species (Hyalonematidae: Amphidiscosida) from eastern and south-eastern Brazil, and further Hexactinellida (Porifera) collected from seamounts off south-eastern Brazil by the RV ‘Marion Dufresne’ MD55 expedition

2009 ◽  
Vol 89 (6) ◽  
pp. 1243-1250 ◽  
Author(s):  
Konstantin R. Tabachnick ◽  
Larisa L. Menshenina ◽  
Daniela A. Lopes ◽  
Eduardo Hajdu
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Rio De Janeiro ◽  
Western Atlantic ◽  
South Eastern ◽  
First Finding ◽  
Campos Basin ◽  
Eastern Brazil ◽  
Janeiro State ◽  
Hexactinellid Sponges

Descriptions of hexactinellid sponges collected by the RV ‘Marion Dufresne’ MD55 expedition on the Vitória–Trindade seamounts chain (off Espírito Santo State, south-eastern Brazil) in 1987 and stored in the MNHN (Muséum National d'Histoire Naturelle in Paris) are presented. Hyalonema (Cyliconema) conqueror sp. nov. (the first finding of this subgenus in the Atlantic Ocean) and H. (Prionema) dufresnei sp. nov. (the second record of this subgenus for the Atlantic Ocean) are described as new species. The holotype of H. (C.) conqueror sp. nov. was collected with a ROV at Campos Basin (off Rio de Janeiro State, south-eastern Brazil), while the paratypes originated from Vitória–Trindade seamounts chain and off Bahía State (eastern Brazil). Other hexactinellids reported here, Farrea sp., Sarostegia aff. oculata, Aphrocallistes aff. beatrix, Dactylocalyx aff. subglobosus and Euplectella suberea were known before to be widely distributed in the Atlantic Ocean. The total number of hexactinellid sponges known from Brazil has risen to 15 and from the south-western Atlantic to 23.

Hot spot volcanic tracks and their implications for south American plate motion, Campos basin (Rio de Janeiro state), Brazil

2005 ◽  
Vol 18 (3-4) ◽  
pp. 383-389 ◽  
Author(s):  
Antonio Thomaz Filho ◽  
Pedro de Cesero ◽  
Ana Maria Mizusaki ◽  
Joana Gisbert Leão
Keyword(s):  
Rio De Janeiro ◽  
Hot Spot ◽  
Plate Motion ◽  
South American ◽  
South American Plate ◽  
Campos Basin ◽  
Janeiro State

scholarly journals Evaluation of six empirical evapotranspiration equations - case study: Campos dos Goytacazes/RJ

2012 ◽  
Vol 27 (3) ◽  
pp. 272-280 ◽  
Author(s):  
Lázaro Costa Fernandes ◽  
Célia Maria Paiva ◽  
Otto Corrêa Rotunno Filho
Keyword(s):  
Water Balance ◽  
Rio De Janeiro ◽  
Large Scale ◽  
Empirical Models ◽  
Empirical Equations ◽  
Physical Processes ◽  
The World ◽  
Monteith Equation ◽  
Janeiro State

The evapotranspiration is a component of the water balance constituting a major challenge in its quantification. The complex physical processes involved in its effective determination on a large scale have spurred scientists to often make use of empirical equations, which have inherent limitations with regard to their applicability as descriptors of the evapotranspiration behavior in different regions across the world. This study was performed for the Campos dos Goytacazes region, in Rio de Janeiro state. It is proposed to investigate and to evaluate the performance of six empirical equations in contrast to FAO56-Penman-Monteith equation. The results indicated that the differences observed between the values obtained using the empirical models applied in this study and the values calculated by the FAO56-Penman-Monteith equation were greater than 10%, which means an error of about 0.5 mm.day-1.

scholarly journals Occurrence of Caligus asperimanus Pearse, 1951 (Copepoda: Caligidae) parasitic Lutjanus spp. (Perciformes: Lutjanidae) in the western South Atlantic

2020 ◽  
Vol 29 (2) ◽  
Author(s):  
Bruno De Laquila Oliveira ◽  
Luiz Fernando Loureiro Fernandes ◽  
Gustavo Martins Rocha ◽  
Ana Cecilia Gomes Silva Malanski ◽  
Fabiano Paschoal
Keyword(s):  
Rio De Janeiro ◽  
First Record ◽  
South Atlantic ◽  
Sea Lice ◽  
Marine Teleost ◽  
Coastal Zones ◽  
Espírito Santo ◽  
The World ◽  
Espirito Santo ◽  
Janeiro State

Abstract Sea lice are widespread copepods in marine teleost around the world. In this paper the first record of Caligus asperimanus Pearse, 1951 in the Western South Atlantic is documented parasitizing Lutjanus jocu and Lutjanus vivanus caught from coastal zones of Espírito Santo and Rio de Janeiro State, respectively.

scholarly journals The interaction of the oil and gas offshore industry with fisheries in Brazil: the "Stena Tay" experience

2008 ◽  
Vol 56 (4) ◽  
pp. 289-296 ◽  
Author(s):  
Silvio Jablonski
Keyword(s):  
Natural Gas ◽  
Rio De Janeiro ◽  
Oil And Gas ◽  
Exclusion Zone ◽  
Campos Basin ◽  
Oil And Natural Gas ◽  
Offshore Industry ◽  
Janeiro State

Most of the oil and natural gas produced in Brazil derive from offshore fields, virtually concentrated in the Campos Basin off the coast of Rio de Janeiro State. The area is also of intense fisheries interest, involving participation of hand-liners artisanal boats and tuna boats due to the fish aggregating effect of the oil rigs. In order to avoid accidents with the platform "Stena Tay", in operation at Santos and Campos Basins, in 2001 e 2002, an awareness project was developed aiming at avoiding the presence of fishing boats in its 500 m exclusion zone. This paper summarizes the main observations concerning the extent of the fish aggregating effect and the behavior of the fishing boats in the vicinity of the platform.

scholarly journals COVID-19 spreading in Rio de Janeiro, Brazil: do the policies of social isolation really work?

2020 ◽  
Author(s):  
Nuno Crokidakis
Keyword(s):  
Social Isolation ◽  
Exponential Growth ◽  
Initial Phase ◽  
Rio De Janeiro ◽  
Doubling Time ◽  
Modified Model ◽  
First Case ◽  
The World ◽  
Janeiro State ◽  
The Ideal

The recent Coronavirus (COVID-19) has been spreading through all the world fastly. In this work we focus on the evolution of the COVID-19 in one of the most populous Brazilian states, namely the Rio de Janeiro state. The first case was reported in March 5, 2020, thus we have a considerable amount of available data to make a good analysis. First we study the early evolution of the disease, considering a Susceptible-Infectious-Quarantined-Recovered (SIQR) model. This initial phase shows the usual exponential growth of the number of confirmed cases. In this case, we estimate the parameters of the model based on the data, as well as the epidemic doubling time. After, we analyze all the available data, from March 5, 2020 through April 26, 2020. In this case, we observe a distinct behavior: a sub-exponential growth. In order to capture this change in the behavior of the evolution of the confirmed cases, we consider the implementation of isolation policies. The modified model agrees well with data. Finally, we consider the relaxation of such policies, and discuss about the ideal period of time to release people to return to their activities.

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