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Mathematical Modelling for Meghna Estuary Study Phase II |
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Location |
Meghna Estuary Area: Noakhali, Sandwip, Chittagong, Hatia, Bhola
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Type of Project |
Estuary modelling
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Period of Study |
April 1999 to April 2001
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Client |
Meghna Estuary Study |
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Description
Meghna Estuary is one of the largest estuaries on the
earth in terms of sediment discharge. Because of its physical extent and
geographical position, the estuary characterises the hydraulic behaviour
of the entire coastal zone. The estuary comprises a number of deltaic
islands and evidenced to be morphologically highly dynamic. The tidal
behaviour, upland discharges and wind fields vary distinctly from season
to season. These include noticeable variation of hydrodynamics in the
estuary and the adjacent bay region. A development plan has been proposed by Bangladesh
Water Development Board (BWDB) to increase the physical safety and social
security of the inhabitants of the Meghna Estuary area and to promote
sustainable development in the coastal areas and on the islands. Possible
developments include construction of cross-dams to enhance land accretion,
building embankments to protect against surge, protecting banks against
coastal erosion, establishing infrastructures, extensive afforestation
etc. The understanding of the hydraulic behaviour of the region is crucial
before undertaking any action in connection with the development proposal.
To meet this requirement a two-dimensional numerical model study has been
carried out to investigate the hydrodynamics of the northern Bay of Bengal
as well as that of the Lower Meghna River. Under the study different
development interventions have been tested. |
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