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	Provedor de dados Anais da ABC (AABC) (1) ArchiMer (1) Autor Berger, Laurent (1) LIMA NETO,IRAN E. (1) Leblond, Isabelle (1) PARENTE,PRISCILA A.B. (1) Scalabrin, Carla (1) Palavra-chave Bubbles (2) Acoustic backscattering (1) Aeration (1) Fisheries echosounders (1) Forward and inverse modeling (1) Gas emissions (1) Hydrodynamics (1) Mass transfer (1) Modeling (1) Oxygenation (1) Seafloor observatory (1) Water column acoustics (1) Water tank experiments (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Text (1) Ano 2016 (1) 2014 (1) País Brazil (1) France (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Acoustic monitoring of gas emissions from the seafloor. Part I: quantifying the volumetric flow of bubbles ArchiMer Leblond, Isabelle; Scalabrin, Carla; Berger, Laurent. Three decades of continuous ocean exploration have led us to identify subsurface fluid related processes as a key phenomenon in marine earth science research. The number of seep areas located on the seafloor has been constantly increasing with the use of multi-scale imagery techniques. Due to recent advances in transducer technology and computer processing, multibeam echosounders are now commonly used to detect submarine gas seeps escaping from the seafloor into the water column. A growing number of en-route surveys shows that sites of gas emissions escaping from the seafloor are much more numerous than previously thought. Estimating the temporal variability of the gas flow rate and volumes escaping from the seafloor has thus become a challenge of relevant... Tipo: Text Palavras-chave: Seafloor observatory; Water column acoustics; Forward and inverse modeling; Fisheries echosounders; Acoustic backscattering; Gas emissions; Bubbles; Water tank experiments. Ano: 2014 URL: http://archimer.ifremer.fr/doc/00192/30336/29094.pdf Influence of mass transfer on bubble plume hydrodynamics Anais da ABC (AABC) LIMA NETO,IRAN E.; PARENTE,PRISCILA A.B.. ABSTRACT This paper presents an integral model to evaluate the impact of gas transfer on the hydrodynamics of bubble plumes. The model is based on the Gaussian type self-similarity and functional relationships for the entrainment coefficient and factor of momentum amplification due to turbulence. The impact of mass transfer on bubble plume hydrodynamics is investigated considering different bubble sizes, gas flow rates and water depths. The results revealed a relevant impact when fine bubbles are considered, even for moderate water depths. Additionally, model simulations indicate that for weak bubble plumes (i.e., with relatively low flow rates and large depths and slip velocities), both dissolution and turbulence can affect plume hydrodynamics, which... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aeration; Bubbles; Hydrodynamics; Mass transfer; Modeling; Oxygenation. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100411 Registros recuperados: 2 Primeira ... 1 ... Última

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