Field Survey of Storm Surge Disaster due to Cyclone Sidr in Bangladesh

Shibayama, Tomoya; Tajima, Yuki; Kakinuma, Taro; Nobuoka, Hisamichi; Yasuda, Tomohiro; Ahsan, Raquib; Rahman, Md. Musfiqur; Islam, Muhaiminul

doi:10.2208/proce1989.55.1396

Cited by 9 publications

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“…The details of the storm surge computation model being employed in the present paper and its validity for the present study area can be found in Hussain and Tajima [10], Tajima et al [8] and Shibayama et al [28]. Among these, Tajima et al [8] and Shibayama et al [28] applied inundation data collected after Cyclone Sidr of 2007 to validate the numerical model.…”

Section: The Numerical Model and Its Applicabilitymentioning

confidence: 99%

Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast

Hussain

Tajima

Hossain

et al. 2017

JMSE

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Abstract:The impact of cyclone track features (e.g., cyclone translation speed, cyclone path and cyclone landfall crossing angle) in combination with tidal phase shift upon surge characteristics have been investigated at the Bay of Bengal along the Bangladesh coast. A two-dimensional hydrodynamic model in a horizontal direction (2DH) coupled with a storm-surge model has been employed for the study. Numerical experiments with three different cyclone translation speeds show that when the surge height is directly forced by the cyclonic wind speed especially within the RWM (Radius of Maximum Wind), faster translation speed produces reduced surge height as the cyclone gets less time to force the water. On the other hand, at locations outside the RMW, surge waves travel as a propagating long wave where higher surges are produced by faster moving cyclones. It is found that surge arrival times are more and more affected by tidal phase when cyclone translation speed is reduced. Analysis of seven hypothetical parallel cyclone paths show that local bathymetry and complex coastline configurations strongly influence the surge height and surge arrival time along the Bangladesh coast. From the analyses of cyclone landfall crossing angles at the Khulna and Chittagong coasts, it is observed that surge durations are the smallest at both the coasts when the coastline crossing angles are the smallest.

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Section: The Numerical Model and Its Applicabilitymentioning

confidence: 99%

Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast

Hussain

Tajima

Hossain

et al. 2017

JMSE

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“…Distances are from the river shore and inundation height from the river water level (numbers in parenthesis is from the ground level). (Shibayama et al, 2009a) Figure 1. Survey route and measured storm surge height.…”

Section: A Case Of Cyclone Sidr In Bangladeshmentioning

confidence: 99%

“…Survey route and measured storm surge height. (Shibayama et al, 2009a) years ago but they were broken due to erosion before Sidr attacked them. Though newer banks had been built recently about 150 m inside from these older banks, the high tide due to Sidr flowed over their tops of about 2.5 m over the river water at the measurement time.…”

Section: A Case Of Cyclone Sidr In Bangladeshmentioning

confidence: 99%

“…(B) 22404011 of the Japan Society for the Promotion of Science (JSPS). The survey works in Bangladesh and Myanmar were performed with the co-authors of Shibayama et al (2009a) and(2009b …”

Section: Acknowledgmentsmentioning

confidence: 99%

“…Both Bangladesh and Myanmar were severely damaged, but the preparedness against storm surges and the experiences were different. In the following parts, general reports of the surveys are described (Shibayama et al, 2009a) The basic method of survey was to detect flood height and to measure distances by using laser distance meters and to measure locations by using GPS. Fig.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Storm Surge Disasters in Asia

Shibayama

2011

Int. Conf. Coastal. Eng.

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Field surveys were performed in the southwest of Bangladesh after cyclone Sidr in 2007 and in Yangon River Basin after Cyclone Nargis in Myanmar in 2008 in order to learn lessons out of severe disasters due to storm surges. Spatial distributions of inundation heights were measured around the most damaged areas. Both Bangladesh and Myanmar were severely damaged, but the preparedness against storm surge and the experiences were different. The resultant total losses in these two countries were significantly different. In Bangladesh, many people witnessed that storm surges inundated with bore-like waves. Counter measured against storm surges should account for the physical mechanisms for the development of such bore-like waves and possible damages due to such waves. Embankment showed significant roles to minimize the damage. Development of riverbanks especially around the river mouth is one of most essential counter-measures to be carried out in Bangladesh. Shelter functioned well to save significant number of lives in Bangladesh. But in Myanmar, there were few experiences on storm surge and no countermeasures such as shelters. These differences results the difference of losses. They were 4,234 including deaths and unknowns in Bangladesh but 138,366 in Myanmar.

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Future typhoon and storm surges under different global warming scenarios: case study of typhoon Haiyan (2013)

et al. 2016

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The present work evaluates potential future typhoon and storm surges around the islands of Samar and Leyte in the Philippines taking into account monthly mean sea surface temperatures, atmospheric air temperature, and relative humidity (hereafter, SST, AAT, and RH) from MIROC5 according to four scenarios proposed by IPCC AR5. Supertyphoon Haiyan (2013), which caused catastrophic damage to coastal areas in the Philippines due to its high winds and storm surge, was used as the case study storm given that it was one of the tropical cyclones recorded in modern history. In this study, the Advanced Research Weather Research and Forecasting Model (ARW-WRF) is used to estimate the characteristics of both the present-day Haiyan and a typhoon with a similar return period under the climate condition of the year 2100. The unstructured, Finite Volume Community Ocean Model (FVCOM) was used to estimate both the present and potential future storm surges. The research has two main focuses. First, both the historical event and its storm surge are simulated and contrasted with field measurements of the storm surge height in order to prove the accuracy of the model. Second, the future typhoon and storm surge are estimated using the monthly mean value differences in SST, AAT, and RH from MIROC5 between 2011-2020 and 2091-2100 for the different scenarios. The & Ryota Nakamura characteristics of the simulated typhoon route and storm surge heights agree well with those of the best track data and field measurements. The numerical results of the future typhoon show that, if climate change is considered to only increase SST, its intensity and storm surge will be larger than under the present climate. The minimum sea-level pressure (hereafter, MSLP) of the future typhoon under scenario RCP 8.5 would be about 21 hPa lower and the storm surge 2.7 m higher than in the present climate. However, if SST, AAT, and RH are also taken into account, then the increase in typhoon intensity will not be as marked as if only SST is considered, with the MSLP under RCP 8.5 decreasing only by 13 hPa and the storm surge increasing by 0.7 m. The results of the present research thus suggest that while increases in SST can contribute to the intensification of future typhoons, increases in AAT and RH will somehow moderate this effect. Nevertheless, all scenarios considered point out to stronger typhoons and higher storm surges, clearly highlighting the perils posed by future climate change.

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Field Survey of Storm Surge Disaster due to Cyclone Sidr in Bangladesh

Cited by 9 publications

References 0 publications

Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast

Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast

Comparison of Storm Surge Disasters in Asia

Future typhoon and storm surges under different global warming scenarios: case study of typhoon Haiyan (2013)

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