Numerical analysis on the Brisbane River plume in Moreton Bay due to Queensland floods 2010-2011

Yingying Yu, Hong Zhang, Charles Lemckert

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

During the Queensland floods in the summer of 2010-2011, a flood-driven Brisbane River plume extended into Moreton Bay, Queensland, Australia, and then seaward, travelling in a northward direction. It covered approximately 500 km2. This paper presents a three- dimensional hydrodynamic numerical model investigation into the behaviour of the Brisbane River plume. The model was verified by using satellite observations and field measurement data. The present study concludes that the high river discharge was the primary factor determining the plume size and its seaward extensions. A notable finding was that the plume was a bottom-trapped type rather than a buoyant type. Further, the southerly winds were found to have moderately confined the alongshore extension of the plume, and had caused the plume to mix thoroughly with the ocean water.

Original languageEnglish
Pages (from-to)1-24
Number of pages24
JournalEnvironmental Fluid Mechanics
Volume14
Issue number1
DOIs
Publication statusPublished - Feb 2014
Externally publishedYes

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river plume
Numerical analysis
plume
Rivers
Discharge (fluid mechanics)
Numerical models
Hydrodynamics
Satellites
Water
river discharge
hydrodynamics
analysis
ocean
summer
water
Direction compound

Cite this

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title = "Numerical analysis on the Brisbane River plume in Moreton Bay due to Queensland floods 2010-2011",
abstract = "During the Queensland floods in the summer of 2010-2011, a flood-driven Brisbane River plume extended into Moreton Bay, Queensland, Australia, and then seaward, travelling in a northward direction. It covered approximately 500 km2. This paper presents a three- dimensional hydrodynamic numerical model investigation into the behaviour of the Brisbane River plume. The model was verified by using satellite observations and field measurement data. The present study concludes that the high river discharge was the primary factor determining the plume size and its seaward extensions. A notable finding was that the plume was a bottom-trapped type rather than a buoyant type. Further, the southerly winds were found to have moderately confined the alongshore extension of the plume, and had caused the plume to mix thoroughly with the ocean water.",
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Numerical analysis on the Brisbane River plume in Moreton Bay due to Queensland floods 2010-2011. / Yu, Yingying; Zhang, Hong; Lemckert, Charles.

In: Environmental Fluid Mechanics, Vol. 14, No. 1, 02.2014, p. 1-24.

Research output: Contribution to journalArticle

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