Typhoon Haiyan 2013 Evacuation Preparations and Awareness

Esteban, Miguel; Valenzuela, Ven Paolo; Yun, Nam Yi; Mikami, Takahito; Shibayama, Tomoya; Matsumaru, Ryo; Takagi, Hiroshi; Thao, Nguyen Danh; Leon, Mario de; Oyama, Takahiro; Nakamura, Ryota

doi:10.24910/jsustain/3.1/3745

Cited by 36 publications

(20 citation statements)

References 10 publications

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“…This is because the calculated typhoon intensity is underestimated compared with the best track data, causing relatively weaker wind induced setup, in places like TaCH. Otherwise, the simulated time history of water level agrees well with eyewitness accounts by local residents, where the water first retreated away from the shoreline (to a level of -1 m, up to 100 m away in some places) and then quickly rose to a height of around 5 m (Esteban et al 2015). Shibayama et al (2014) indicated these rapid changes in water levels were associated with sudden changes in wind direction and can cause tsunami-like hydraulic bore in the large front of the storm surge, as observed by coastal residents.…”

Section: Boundary Conditions Under Global Warming Scenariossupporting

confidence: 54%

“…In addition to measuring the storm surge heights, the team also interviewed local residents to understand evacuation patterns and the awareness of local residents about the dangers posed by the typhoon (Esteban et al , 2015. The area surveyed included the coastal zones of Samar and Leyte islands, which meet at the San Pedro and San Pablo Bay, Leyte Gulf.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Boundary Conditions Under Global Warming Scenariossupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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“…In addition, when elaborating a storm surge hazard map, the effects of overtopping waves are seldom included. As shown by previous storm surge events [25][26][27], the extent of the damage to human being depends on the level of people's awareness and preparedness. Considering this, it is important to make coastal residents aware that inundation could occur even if they are outside of the predicted storm surge inundation area.…”

Section: Lessons For Japanese Disaster Risk Managementmentioning

confidence: 99%

Field Survey of 2018 Typhoon Jebi in Japan: Lessons for Disaster Risk Management

et al. 2018

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Typhoon Jebi struck Japan on the 4 September 2018, damaging and inundating many coastal areas along Osaka Bay due to the high winds, a storm surge, and wind driven waves. In order to understand the various damage mechanisms, the authors conducted a field survey two days after the typhoon made landfall, measuring inundation heights and depths at several locations in Hyogo Prefecture. The survey results showed that 0.18-1.27 m inundation depths were caused by Typhoon Jebi. As parts of the survey, local residents were interviewed about the flooding, and a questionnaire survey regarding awareness of typhoons and storm surges, and their response to the typhoon was distributed. The authors also mapped the location of some of the containers that were displaced by the storm surge, aiming to provide information to validate future simulation models of container displacement. Finally, some interesting characteristics of the storm surge are summarized, such as possible overtopping at what had initially been thought to be a low risk area (Suzukaze town), and lessons learnt in terms of disaster risk management are discussed.

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“…Land subsidence in Asian megacities (Kaneko and Toyota, 2011;Takagi et al, 2016a). surge as many of them had only just heard the term for the first time. Many people expressed the view that it would have been better for authorities and media to describe it by a simpler vocabulary such as a tsunami Esteban et al, 2015Esteban et al, , 2016Mikami et al, 2016). In this regard, the term "flood" (Indonesian: "banjir") is unlikely to evoke the real danger that would be caused by a dyke-break event, since local inhabitants may imagine a gradually increasing persistent inundation as it always happens, particularly in Jakarta.…”

Section: Introductionmentioning

confidence: 99%

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Takagi

2016

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Thin coastal dykes typically found in developing countries may suddenly collapse due to rapid land subsidence, material ageing, sea-level rise, high wave attack, earthquakes, landslides, or a collision with vessels. Such a failure could trigger dam-break tsunami-type flooding, or "dyke-break-induced tsunami", a possibility which has so far been overlooked in the field of coastal disaster science and management. To analyse the potential consequences of one such flooding event caused by a dyke failure, a hydrodynamic model was constructed based on the authors' field surveys of a vulnerable coastal location in Jakarta, Indonesia. In a 2 m land subsidence scenario -which is expected to take place in the study area after only about 10-20 years -the model results show that the floodwaters rapidly rise to a height of nearly 3 m, resembling the flooding pattern of earthquakeinduced tsunamis. The depth-velocity product criterion suggests that many of the narrow pedestrian paths behind the dyke could experience strong flows, which are far greater than the safe limits that would allow pedestrian evacuation. A couple of alternative scenarios were also considered to investigate how such flood impacts could be mitigated by creating a mangrove belt in front of the dyke as an additional safety measure. The dyke-break-induced tsunamis, which in many areas are far more likely than regular earthquake tsunamis, cannot be overlooked and thus should be considered in disaster management and urban planning along the coasts of many developing countries.

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Typhoon Haiyan 2013 Evacuation Preparations and Awareness

Cited by 36 publications

References 10 publications

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

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

Field Survey of 2018 Typhoon Jebi in Japan: Lessons for Disaster Risk Management

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