Modeling Subsurface Gas Release in Tropical and Shallow Waters: Comparison with Field Experiments off Brazil's Northeast Coast

Leite, Fabiana S.; Silva, Marcus André; Araújo, Moacyr; Silva, Rodolfo A.; Droguett, Enrique López

doi:10.1080/10807039.2012.723182

Cited by 1 publication

(2 citation statements)

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“…One of the advantages of these models is their flexibility to assimilate different types of dataset, as the case with the output data of other models, such as the ROMS model (North et al, 2011) or even using in situ current and thermohaline data (Leite et al, 2014).…”

Section: The Gas_docean Modelmentioning

confidence: 99%

“…These studies were used for the elaboration of computational routines that represent the simultaneous transport of oil and natural gas. This model was previously used by Leite et al (2014) in the evaluation of natural gas plumes that resulted from an eventual blowout in the oceanic floor. The new implementations to the GAS_DOCEAN code (version 3.0) allow the simulations of simultaneous evolution of the plumes of oil and natural gas.…”

Section: The Gas_docean Modelmentioning

confidence: 99%

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Influence of underwater hydrodynamics on oil and gas blowouts off Amazon River Mouth

et al. 2018

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RESUMO.O estudo está focado na análise do comportamento das plumas de vazamento de óleo/gás em águas profundas, localizadas na plataforma continental do norte do Brasil. O modelo Regional Ocean Modeling System (ROMS) é utilizado para simular a dinâmica oceânica na região 60.5°-24°W/5°S-16°N com 0.25° de resolução, 32 níveis verticais e considerando as descargas dos rios Amazonas e Pará. A saída do modelo ROMS é comparada com o conjunto de dados SODA (Simple Ocean Data Assimilation). ABSTRACT. This study is focused on analyzing the behavior of oil/gas plumes from blowouts into deepwater, located at the northern Brazil continental shelf. The Regional Ocean Modeling System (ROMS) model is used to simulate ocean dynamics in the region 60.5°-24.0°W/5°S-16°N with 0.25° of resolution, 32 vertical levels and considering the discharges of the Amazon and Pará Rivers. The ROMS output are compared to Simple Ocean Data Assimilation (SODA) dataset. Three points were selected to make the numerical simulations, located at (50°W, 5.25°N), (44.5°W, 0.5°N) and (42.75°W, 1°S). The time step suggested by Lee and Cheung (1990) was adjusted due to the particular oceanographic conditions at each point, in which, the initial velocity tends to zero and the coefficient 0.1 of the original equation was replaced by 0.0250 and 0.0375. All the plumes behaved as type 3. The seasonal current speed was small from the bottom to the surface, usually not exceeding 0.25 ms -1 ; the maximum displacement of the plumes from its point of origin was not greater than 1 m. The mean plumes diameter on the surface ranged 54 -79.7 m and the arrival time to the surface was from 7.25 to 8.05 hours.

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Section: The Gas_docean Modelmentioning

confidence: 99%

Section: The Gas_docean Modelmentioning

confidence: 99%