Tide‐surge Interaction Intensified by the Taiwan Strait

Zhang, Wenzhou; Shi, Fengyan; Hong, Huasheng; Shang, Songhao; Kirby, James T.

doi:10.1029/2009jc005762

Cited by 73 publications

(83 citation statements)

References 41 publications

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“…Thus, tidal current and tidal water level interact directly with the hydrodynamics induced by wind and pressure, through the advection term, the so-called shallow-water effect (water height in the denominator of the friction term) and nonlinear friction term related to velocity interactions (Flather, 2001;Zhang et al, 2010). Moreover, in many cases, the dominant tide-surge interaction term comes from the friction term.…”

Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

“…Moreover, in many cases, the dominant tide-surge interaction term comes from the friction term. As an example of a similar environment, we can refer to the Zhang et al (2010) study on Taiwan Strait. They numerically show that the quadratic nonlinear friction term contributes significantly to tide-surge interaction, as compared to the advective term and the shallow-water effect.…”

Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

“…(1), (2) and (3), as highlighted by Zhang et al (2010), there are several nonlinear terms which can be classified in three nonlinear effects:…”

Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

“…slow) the tidal propagation. By analysing the shallow-water equations in greater detail, the various contributions of the tide-surge interactions can be identified (Flather, 2001;Zhang et al, 2010): shallow-water effect (water depth), advective term, bottom friction term. For instance, Zhang et al (2010), resp.…”

Section: Introductionmentioning

confidence: 99%

“…By analysing the shallow-water equations in greater detail, the various contributions of the tide-surge interactions can be identified (Flather, 2001;Zhang et al, 2010): shallow-water effect (water depth), advective term, bottom friction term. For instance, Zhang et al (2010), resp. Rego and Li (2010), investigated quantitatively the various contributions of the tide-surge interaction terms in the water-level, resp.…”

Section: Introductionmentioning

confidence: 99%

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Tide-surge interaction in the English Channel

Idier

Dumas

Müller

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. The English Channel is characterised by strong tidal currents and a wide tidal range, such that their influence on surges is expected to be non-negligible. In order to better assess storm surges in this zone, tide-surge interactions are investigated. A preliminary data analysis on hourly surges indicates some preferential times of occurrence of large storm surges at rising tide, especially in Dunkerque. To examine this further, a numerical modelling approach is chosen, based on the 2DH shallow-water model (MARS). The surges are computed both with and without tide interaction. For the two selected events (the November 2007 North Sea and March 2008 Atlantic storms), it appears that the instantaneous tide-surge interaction is seen to be non-negligible in the eastern half of the English Channel, reaching values of 74 cm (i.e. 50 % of the same event maximal storm surge) in the Dover Strait for the studied cases. This interaction decreases in westerly direction. In the risk-analysis community in France, extreme water levels have been determined assuming skew surges and tide as independent. The same hydrodynamic model is used to investigate this dependence in the English Channel. Simple computations are performed with the same meteorological forcing, while varying the tidal amplitude, and the skew surge differences D SS are analysed. Skew surges appear to be tide-dependent, with negligible values of D SS (<0.05 m) over a large portion of the English Channel, although reaching several tens of centimetres in some locations (e.g. the Isle of Wight and Dover Strait).

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Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

“…(1), (2) and (3), as highlighted by Zhang et al (2010), there are several nonlinear terms which can be classified in three nonlinear effects:…”

Section: Idier Et Al: Tide-surge Interaction In the English Channelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tide-surge interaction in the English Channel

Idier

Dumas

Müller

2012

Nat. Hazards Earth Syst. Sci.

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Sea level extremes at the coasts of China

Feng

Tsimplis

2014

J. Geophys. Res. Oceans

100

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Hourly sea level records from 1954 to 2012 at 20 tide gauges at and adjacent to the Chinese coasts are used to analyze extremes in sea level and in tidal residual. Tides and tropical cyclones determine the spatial distribution of sea level maxima. Tidal residual maxima are predominantly determined by tropical cyclones. The 50 year return level is found to be sensitive to the number of extreme events used in the estimation. This is caused by the small number of tropical cyclone events happening each year which lead to other local storm events included thus significantly affecting the estimates. Significant increase in sea level extremes is found with trends in the range between 2.0 and 14.1 mm yr 21 . The trends are primarily driven by changes in median sea level but also linked with increases in tidal amplitudes at three stations. Tropical cyclones cause significant interannual variations in the extremes. The interannual variability in the sea level extremes is also influenced by the changes in median sea level at the north and by the 18.6 year nodal cycle at the South China Sea. Neither of PDO and ENSO is found to be an indicator of changes in the size of extremes, but ENSO appears to regulate the number of tropical cyclones that reach the Chinese coasts. Global mean atmospheric temperature appears to be a good descriptor of the interannual variability of tidal residual extremes induced by tropical cyclones but the trend in global temperature is inconsistent with the lack of trend in the residuals.

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Assessing changes in extreme sea levels along the coast of China

et al. 2015

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Hourly tide‐gauge data along the coast of China are used to evaluate changes in extreme water levels in the past several decades. Mean sea level, astronomical tide, nontidal component and the tide‐surge interaction was analyzed separately to assess their roles in the changes of extreme sea levels. Mean sea level at five tide gauges, Kanmen, Keelung, Zhapo, Xiamen and Quarrybay, show significant increasing trends during the past decades (1954–2013) with a rate of about 1.4–3.5 mm/yr. At Keelung, Kaohsiung and Quarrybay the mean high waters increased during 1954–2013 with a rate from 0.6 to 1.8 mm/yr, while the annual mean tidal range rose at the same time by 0.9 to 3.8 mm/yr. In terms of storm surge intensities, there is interannual variability and decadal variability but five tide gauges show significant decreasing trends, and three gauges, at Keelung, Xiamen and Quarrybay, exhibited significant increases of extreme sea levels with trends of 1.5–6.0 mm/yr during 1954–2013. Significant tide‐surge interactions were found at all 12 tide gauges, but no obvious change was found during the past few decades. The changes in extreme sea levels in this area are strongly related to the changes of mean sea levels (MSL). At gauges, where the tide‐surge interaction is large, the astronomic tides are also an important factor for the extreme sea levels, whereas tide gauges with little tide‐surge interaction, the changes of wind driven storm surge component adds to the change of the extreme sea levels.

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Tide‐surge Interaction Intensified by the Taiwan Strait

Cited by 73 publications

References 41 publications

Tide-surge interaction in the English Channel

Tide-surge interaction in the English Channel

Sea level extremes at the coasts of China

Assessing changes in extreme sea levels along the coast of China

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