Tide–Surge Interaction in the Meghna Estuary: Most Severe Conditions

As-Salek, Junaid Amin; Yasuda, Takashi

doi:10.1175/1520-0485(2001)031<3059:tsiitm>2.0.co;2

Cited by 35 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the early stage of the storm, a dominating tendency of tide on water level may be observed from the figures, whereas near the coast the water level can be found to be dominated by the surge. In [28], it is found that, the April 1991 cyclone made landfall at Chittagong coast just when the local astronomical tide was at peak, which is manifested in Figs. 4 and 5.…”

Section: Analysis Of Results and Model Validationmentioning

confidence: 92%

“…The governing equations given by (28) through (30) as well as the boundary conditions given by (33) through (35) are discretized by finite-difference (forward in time and central in space) by considering the discrete points in the xy-plane defined by x i ¼ (iÀ1)Dx, i¼ 1, 2, 3,y, m (even), y j ¼ (jÀ1)Dx, j ¼ 1, 2, 3,y, n (odd) and sequence of time instant defined by t k ¼ kDt, k ¼ 1, 2, 3,y…”

Section: Numerical Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Tide–surge interaction model including air bubble effects for the coast of Bangladesh

Paul¹,

Ismail²

2012

Journal of the Franklin Institute

View full text Add to dashboard Cite

Section: Analysis Of Results and Model Validationmentioning

confidence: 92%

Section: Numerical Proceduresmentioning

confidence: 99%

Tide–surge interaction model including air bubble effects for the coast of Bangladesh

Paul¹,

Ismail²

2012

Journal of the Franklin Institute

View full text Add to dashboard Cite

“…t represents the time; (l,') represent the east longitude and north latitude; (u,v) represent the east and north components of the depth-averaged velocity q; z represents the sea surface elevation above the undisturbed sea level; H represents the total water depth, H = h + z; h represents the depth of undisturbed water; p a represents the atmospheric pressure on the sea surface; t b = (F b , G b ) represents the bottom friction; and t s = (F s , G s ) represents the wind stress. Two-dimensional models are widely adopted in the studies on tide-surge interaction and in the operational forecast of storm surge [e.g., Banks, 1974;Wolf, 1981;Tang et al, 1996;Flather, 2000;As-Salek and Yasuda, 2001;Shen et al, 2006;Bernier and Thompson, 2007;Horsburgh and Wilson, 2007]. Although recent results [Weisberg and Zheng, 2008] indicate that 3-D models can give significantly different results for predicted surges owing to differences in the orientation and magnitude of the bottom stress vector, the 2-D model is applied in this work.…”

Section: Numerical Modelmentioning

confidence: 99%

Tide‐surge Interaction Intensified by the Taiwan Strait

et al. 2010

View full text Add to dashboard Cite

[1] The Taiwan Strait is a long and wide shelf-channel where the hydrodynamics is extremely complex, being characterized by strong tides, and where storm surges frequently occur during the typhoon season. Obvious oscillations due to tide-surge interaction were observed by tide gauges along the northern Fujian coast, the west bank of the Taiwan Strait, during Typhoon Dan (1999). Numerical experiments indicate that nonlinear bottom friction (described by the quadratic formula) is a major factor to predict these oscillations while the nonlinear advective terms and the shallow water effect have little contribution. It is found that the tide-surge interaction in the northern portion of the Taiwan Strait is intensified by the strait. Simulations based on simplified topographies with and without the island of Taiwan show that, in the presence of the island, the channel effect strengthens tidal currents and tends to align the major axes of tidal ellipses along the channel direction. Storm-induced currents are also strengthened by the channel. The pattern of strong tidal currents and storminduced currents along the channel direction enhances tide-surge interaction via the nonlinear bottom friction, resulting in the obvious oscillations along the northern Fujian coast.

show abstract

“…More recently, Davies and Lawrence [1994] have shown that the interaction of tide and wind‐induced currents can lead to a significant modification of the amplitude and phase of M 2 due primarily to enhanced turbulence and bed friction. Tide‐surge interaction has also been shown to be important in many other regions including the Meghna Estuary in Bangladesh [ As‐Salek and Yasuada , 2001] and along the North Queensland coast of Australia [ Tang et al , 1996].…”

Section: Introductionmentioning

confidence: 99%

Tide‐surge interaction off the east coast of Canada and northeastern United States

Bernier

Thompson

2007

J. Geophys. Res.

View full text Add to dashboard Cite

[1] Sea level observations and a dynamical model are used to investigate tide-surge interaction in the coastal waters off the east coast of Canada and northern USA. The study is motivated in part by the need to improve operational forecasts of total water level and coastal flooding. Two statistical methods are used to search for evidence of tide-surge interaction in hourly sea level records from 23 coastal locations. The methods are based on comparison of the statistical properties of the sea level residuals (observed sea level minus tide) occurring at different stages of the tidal cycle. While recognizing the limitations of such an approach, it is concluded that tide-surge interaction does occur in the Northumberland Strait which is located in the southern Gulf of St. Lawrence. Results for the Gulf of Maine and Bay of Fundy are less conclusive. A dynamical model is also used to quantify tide-surge interaction in the study region and to identify its physical causes. Tide-surge interaction in the model is strongest in the Northumberland Strait where the amplitude of the effect can reach 20 cm during and following strong storm surge events. This is large enough to be of practical significance in terms of flood forecasting. A series of sensitivity experiments with the model shows that the nonlinear parameterization of bottom stress is the principal contributor to tide-surge interaction.

show abstract

Tide–Surge Interaction in the Meghna Estuary: Most Severe Conditions

Cited by 35 publications

References 16 publications

Tide–surge interaction model including air bubble effects for the coast of Bangladesh

Tide–surge interaction model including air bubble effects for the coast of Bangladesh

Tide‐surge Interaction Intensified by the Taiwan Strait

Tide‐surge interaction off the east coast of Canada and northeastern United States

Contact Info

Product

Resources

About