Numerical Modelling of Tropical Cyclone Storm Surge

Sobey, Rodney J.; Harper, Bruce; Mitchell, George M.

doi:10.1061/9780872622647.045

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…Spring tides generated higher positive surge residuals, with peaks during rising, high, and ebbing tides. Importantly, negative surges could occur during rising tides at the time of tropical cyclone landfall, demonstrating the tide-surge interaction rule in which the lowest surge occurs at high tidal levels and vice versa [80].…”

Section: Discussionmentioning

confidence: 96%

“…In the case of the ECPM, the recommended value for δ fm is 0.5, as per the MIKE 21 manual, while the maximum angle is consistently set at 115 degrees for all typhoon movements. The wind inflow angle is derived from [80], and these equations were employed in this study. The wind distribution and pressure models for Typhoon Gay are visually depicted in Figure 6.…”

Section: Wind Field Modelmentioning

confidence: 99%

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A Numerical Study on Storm Surge Dynamics Caused by Tropical Depression 29W in the Pahang Region

Mohd Anuar,

Teh,

2023

JMSE

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Amid mounting concerns about climate change’s impact on coastal areas, this study investigates storm surge dynamics induced by Tropical Depression 29W (TD 29W) using the MIKE 21 model. Comprehending the complex mechanisms behind storm surges is crucial considering gaps in understanding their combined influences, including tide–surge interactions, varying typhoon parameters, and changing storm tracks. The impacts of climate change, including accelerating sea level rise and its correlation with storm surge magnitudes, require detailed investigations for effective disaster management in vulnerable coastal communities. Through precise calibration, matching simulations with tidal gauge stations, this research uncovers the intricate interplay between landfall timing, diverse storm tracks, wind intensities, and the amplifying impact of rising sea levels. Findings indicate surge residuals ranging from −0.03m to 0.01m during TD 29W’s landfall, with higher surge residuals during rising tide phases. Moreover, an increase in TD 29W’s maximum wind speed moderately influences positive surges while significantly amplifying negative surge heights by 68% to 92% with wind speed increments. An analysis of typhoon track variations emphasizes the vulnerability of the Pahang coast to changing storm dynamics, underlining the need for tailored resilience strategies. Projections suggest a significant surge height increase by the year 2100, emphasizing the urgency of adaptive measures for the region.

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Section: Discussionmentioning

confidence: 96%

Section: Wind Field Modelmentioning

confidence: 99%

A Numerical Study on Storm Surge Dynamics Caused by Tropical Depression 29W in the Pahang Region

Mohd Anuar,

Teh,

2023

JMSE

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“…To examine the response of beach profile to different wind conditions, the Cyclone Wind Generation tool of Mike21 toolbox based on the Young and Sobey wind model (Young and Sobey, 1981) was used to generate three TCs with different tracks (L-A, L-B, and R) as shown in Table 2 and Figure S5. The correction coefficient of forwarding motion asymmetry and inflow angle in the wind model used the method of Harper and Holland (1999) and Sobey et al (1980), respectively. The radius to the maximum wind speed (R max ) and the central pressure (P c ) of a TC were calculated referred to (Graham and Nunn, 1959) and (Atkinson and Holliday, 1977), respectively.…”

Section: Numerical Experiments On Different Wind Conditionsmentioning

confidence: 99%

Geomorphological response of sandy beach to tropical cyclones with different characteristics

Wang²,

Qiao³

et al. 2022

Front. Mar. Sci.

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Tropical cyclones (TCs) play important roles in the evolution of beaches. The response of beaches to a single tropical cyclone (TC) has been well reported, however, few studies have compared the responses of the same beach to TCs with different characteristics. Taking Haiyang Beach in the northern China Seas as a case study, the beach profiles before and after two TCs, Lekima and Bavi, which passed through the west and east sides of the study area, were investigated. The beach exhibited erosion at the upper foreshore and minor deposition near the mean high water level (MHW) after Lekima with subaqueous sandbars formed in the nearshore zone, whereas all the beach profiles showed little changes after Bavi. A high-resolution FVCOM model was established and eleven sensitive experiments were conducted to simulate hydrodynamic changes induced by TCs with different tracks, intensity and duration. Then the Xbeach model was used to display the beach evolution due to different TCs conditions. It is found that the significant storm surge and strong seaward bottom current induced by landward wind of the TCs passed through the west side of the study area should responsible for the beach profile changes. Negligible storm surge rise and landward bottom current related to the seaward wind of eastern path TCs can only result in little change of the beach. Swell contributes most to the wave height while has less effect on the beach changes. In this study, we conclude that the effects of TCs on beaches are primarily dependent on relative position of a beach and TCs’ tracks.

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“…For the prediction of storm surges on the east coast of India, Ghosh (1977) has applied Jelesnianski's SPLASH model to generate sets of nomograms for the estimation of peak surges. Johns et al (1981) have numerically modelled (in 2D) the surge generated by the Andhra cyclone which hit the Andhra Pradesh coast of India on 1977 November 17 producing a maximum surge elevation at the coast of 4-5 m, and Sobey, Harper & Mitchell (1981) the surge generated by the cyclone Althea which passed over the Queensland coast near Townsville in 1971 December producing a peak surge at Townsville of about 2.7 m.…”

Section: Other Areasmentioning

confidence: 99%

Storm surges, 1967-1982

Heaps

1983

Geophysical Journal International

135

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Summary. An earlier review of storm surges, covering the forty years up to 1967, is updated. Again the emphasis is on storm surges around the British Isles but, as before, references are also made to surges which occur in other areas. It is shown that the main advance in the work, during the period considered, has been the widespread development and use of two‐dimensional numerical storm‐surge models. The application of these models to operational storm surge forecasting is described. Research evaluating storm‐surge currents, using three‐dimensional models, is considered.

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Numerical Modelling of Tropical Cyclone Storm Surge

Cited by 6 publications

References 2 publications

A Numerical Study on Storm Surge Dynamics Caused by Tropical Depression 29W in the Pahang Region

A Numerical Study on Storm Surge Dynamics Caused by Tropical Depression 29W in the Pahang Region

Geomorphological response of sandy beach to tropical cyclones with different characteristics

Storm surges, 1967-1982

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