The impact of different historical typhoon tracks on storm surge: A case study of Zhejiang, China

Abstract. China is one of the countries that is most seriously affected by storm surges. In recent years, storm surges in coastal areas of China have caused huge economic losses and a large number of human casualties. Knowledge of the inundation range and water depth of storm surges under different typhoon intensities could assist predisaster risk assessment and making evacuation plans, as well as provide decision support for responding to storm surges. Taking Pingyang County in Zhejiang Province as a case study area, parameters including typhoon tracks, radius of maximum wind speed, astronomical tide, and upstream flood runoff were determined for different typhoon intensities. Numerical simulations were conducted using these parameters to investigate the inundation range and water depth distribution of storm surges in Pingyang County considering the impact of seawall collapse under five different intensity scenarios (corresponding to minimum central pressure values equal to 915, 925, 935, 945, and 965 hPa). The inundated area ranged from 103.51 to 233.16 km2 for the most intense typhoon. The proposed method could be easily adopted in various coastal counties and serves as an effective tool for decision-making in storm surge disaster risk reduction practices.

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Assessing storm surge hazard and impact of sea level rise in the Lesser Antilles case study of Martinique

Natural Hazards and Earth System Science ◽

10.5194/nhess-17-1559-2017 ◽

2017 ◽

Vol 17 (9) ◽

pp. 1559-1571 ◽

Cited By ~ 11

Author(s):

Yann Krien ◽

Bernard Dudon ◽

Jean Roger ◽

Gael Arnaud ◽

Narcisse Zahibo

Keyword(s):

Sea Level Rise ◽

Sea Level ◽

Storm Surge ◽

Numerical Models ◽

Lesser Antilles ◽

Adaptation Measures ◽

Worst Case ◽

Mitigation And Adaptation ◽

The Impact

Abstract. In the Lesser Antilles, coastal inundations from hurricane-induced storm surges pose a great threat to lives, properties and ecosystems. Assessing current and future storm surge hazards with sufficient spatial resolution is of primary interest to help coastal planners and decision makers develop mitigation and adaptation measures. Here, we use wave–current numerical models and statistical methods to investigate worst case scenarios and 100-year surge levels for the case study of Martinique under present climate or considering a potential sea level rise. Results confirm that the wave setup plays a major role in the Lesser Antilles, where the narrow island shelf impedes the piling-up of large amounts of wind-driven water on the shoreline during extreme events. The radiation stress gradients thus contribute significantly to the total surge – up to 100 % in some cases. The nonlinear interactions of sea level rise (SLR) with bathymetry and topography are generally found to be relatively small in Martinique but can reach several tens of centimeters in low-lying areas where the inundation extent is strongly enhanced compared to present conditions. These findings further emphasize the importance of waves for developing operational storm surge warning systems in the Lesser Antilles and encourage caution when using static methods to assess the impact of sea level rise on storm surge hazard.

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Assessing storm surge hazard and impact of sea level rise in Lesser Antilles-Case study of Martinique

10.5194/nhess-2017-148 ◽

2017 ◽

Author(s):

Yann Krien ◽

Bernard Dudon ◽

Jean Roger ◽

Gaël Arnaud ◽

Narcisse Zahibo

Keyword(s):

Sea Level Rise ◽

Sea Level ◽

Storm Surge ◽

Numerical Models ◽

Lesser Antilles ◽

Adaptation Measures ◽

Worst Case ◽

Mitigation And Adaptation ◽

The Impact

Abstract. In the Lesser Antilles, coastal inundations from hurricane-induced storm surges cause great threats to lives, properties, and ecosystems. Assessing current and future storm surge hazard with sufficient spatial resolution is of primary interest to help coastal planners and decision makers develop mitigation and adaptation measures. Here, we use wave-current numerical models and statistical methods to investigate worst case scenarios and 100-year surge levels for the case study of Martinique, under present climate or considering a potential sea-level rise. Results confirm that the wave setup plays a major role in Lesser Antilles, where the narrow island shelf impedes the piling-up of large amounts of wind-driven water on the shoreline during extreme events. The radiation stress gradients thus contribute significantly to the total surge, up to 100 % in some cases. The non-linear interactions of sea level rise with bathymetry and topography are generally found to be relatively small in Martinique, but can reach several tens of centimeters in low-lying areas where the inundation extent is strongly enhanced compared to present conditions. These findings further emphasize the importance of waves for developing operational storm surge warning systems in the Lesser Antilles, and encourage caution when using static methods to assess the impact of sea level rise on storm surge hazard.

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Simulation of storm surge inundation under different typhoon intensity scenarios: Case study of Pingyang County, China

10.5194/nhess-2019-425 ◽

2020 ◽

Author(s):

Xianwu Shi ◽

Pubing Yu ◽

Zhixing Guo ◽

Fuyuan Chen ◽

Xiuguang Wu ◽

...

Keyword(s):

Storm Surge ◽

Water Depth ◽

Storm Surges ◽

Economic Losses ◽

Astronomical Tide ◽

Evacuation Plans ◽

Northern Areas ◽

Typhoon Intensity ◽

Typhoon Tracks ◽

The Impact

Abstract. China is one of the countries that are most seriously affected by storm surges. In recent years, storm surges in coastal areas of China have caused huge economic losses and a large number of human casualties. Knowledge of the inundation range and water depth of storm surges under different typhoon intensities could assist pre-disaster risk assessment and making evacuation plans, as well as provide decision support for responding to storm surges. Based on historical typhoon-induced storm surges in the study area of Pingyang County in Zhejiang Province, China, key parameters including typhoon tracks, radius of maximum wind speed, astronomical tide, and upstream flood runoff were determined for different typhoon intensities. Numerical simulations were conducted using these parameters to investigate the inundation range and water depth distribution of storm surges in Pingyang County under five different intensity scenarios (915, 925, 935, 945, and 965 hPa) with consideration of the impact of seawall collapse. The simulation results show that the range of storm surge inundation expands with increasing typhoon intensity. The scenario with the most intense typhoon (915 hPa) had the most adverse track, with an associated area of inundation of 233 km2 that included most areas of the town of Aojiang, eastern areas of Wanquan, northern areas of Songbu, as well as parts of Kunyang and Shuitou.

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