Disasters Worldwide and Floods in the Malaysian Region: A Brief Review

Shah, Syed Muzzamil Hussain; Mustaffa, Zahiraniza; Yusof, Khamaruzaman Wan

doi:10.17485/ijst/2017/v10i2/110385

Cited by 32 publications

(25 citation statements)

References 8 publications

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“…The probability of flood occurrence has increased due to considerable meteorological changes, which has also increased the risk of vehicle instability in floodwaters [1]. The vehicle may have very undesirable dynamics under certain conditions [2] causing it to become unbalanced either by floating, when the water depth is high and flow velocity is low, or by losing the frictional resistance between the tires and the ground surface (sliding) when the flow velocity is high and the water depth is low [1]. In this way, the vehicles might be considered massive debris being washed away by the flood, which could compromise pedestrian safety and generate significant economic damages [3].…”

mentioning

confidence: 99%

Criterion of vehicle instability in floodwaters: past, present and future

Shah

Mustaffa

Martínez‐Gomariz

et al. 2019

International Journal of River Basin Management

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The stability of vehicles exposed to floodwaters on the roads should not be taken for granted, especially in floodplain areas. When a vehicle in floodwaters becomes unstable, it tends to become buoyant and, eventually, is washed away, putting occupants in extreme danger. Therefore, the characteristics of vehicle instability in floodwaters should be critically understood to prepare safety guidelines. This paper attempts to summarize different vehicle stability studies, which focused on parked vehicles for a range of flood depths, through experimental and theoretical analysis (1967-1993). However, modern vehicle designs mean there are different values for the stability limits under partial or full submergence with different braking conditions, orientations and ground slopes (2010-2017). Since all the reported studies are about static vehicles, this paper attempts to address, for the very first time, vehicles in motion and endangered by floodwaters. As such, the governing effect of incipient velocity for a partially submerged, non-stationary vehicle will be presented, under the consideration of two new parameters, namely rolling friction and driving force.

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mentioning

confidence: 99%

Criterion of vehicle instability in floodwaters: past, present and future

Shah

Mustaffa

Martínez‐Gomariz

et al. 2019

International Journal of River Basin Management

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“…Nearly 77 per cent of the Malaysian population (33 million) lives in urban areas, and about 3.5 million people are residing on the floodplains (Shah et al , 2017); 23 per cent of the total urban area is flood-prone in Malaysia (Khailani and Perera, 2013). Since the beginning of this century, floods in Malaysia have affected an area of 29,000 km 2 , over 4.82 million people (22 per cent) and damaged properties worth of MR915 million (Water and Energy Consumer Association of Malaysia, 2013)[1].…”

Section: Context Of Malaysian Floodingmentioning

confidence: 99%

Flood resilience in Malaysian cities: a case study of two towns in Johor state

Karki

2019

IJDRBE

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Purpose This paper has carried out a case study of two flood-prone towns in Johor state, Malaysia, to understand how resilient the residents and local authorities were in dealing with the flood disasters in terms of their ability to anticipate, mobilize institutional resources, adapt and respond. Design/methodology/approach This research conducted semi-structured interviews with flood-affected residents, flood disaster managers and planners, and assessed land use regulations and institutional strengths to answer the research question. Findings The results showed that the residents’ anticipatory capacity to flood risks was weak and both the human and institutional resources were insufficient in coping with and responding to urban flooding. Research limitations/implications This research has not carried out questionnaire survey of large number of residents. It is based on semi-structured interview of ten residents in two Malaysian cities. Practical implications The insights drawn from this research would help develop flood-resilient policies for Malaysian cities. The global communities exposed to flood disasters too benefit from the Malaysia’s minute but crucial human and institutional experiences in urban flooding. Social implications Being resilient to all these small but important flood concerns has huge potential to reduce vulnerability and disaster risks and protect the lives and properties of flood affected urban residents. Originality/value The research focus in Malaysia is less on flood resilience and more on flood modeling and hydrology analysis. In this sense, this research is new because it talks more on flood vulnerability and resilience issues at the community level and gives a perspective on current Malaysian town's state of flood resilience culture and practices.

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“…Once moved, it can be easily following the flood path and cause damages to properties and road structures. Previous studies showed that around 50% of the total deaths during flash floods occur to the people inside vehicles [9]. Recently, many vehicles swept away during Sant Lorenc des Cardassar flash flood in the Spanish Balearic island of Majorca.…”

Section: Introductionmentioning

confidence: 99%

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

Mustaffa¹,

Al‐Qadami²,

Shah³

et al. 2020

Flood Impact Mitigation and Resilience Enhancement

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This chapter presents a flood risk management system for vehicles at roadways, developed from extensive experimental and numerical studies on the impact of flash floods towards vehicle instabilities. The system, easily addressed as FLO-LOW, developed to contradict the assumptions that a vehicle would be able to protect the passengers from the flood impact. Herein the hydrodynamics of flows moving across these roads coupled with the conditions of a static car that would result in vehicle instabilities has been studied. In an attempt to prevent fatalities in commonly flooded areas, permanent structures are installed to warn users regarding water depth at the flooded areas. The existing flood monitoring system only focuses on water conditions in rivers or lake in order to determine risks associated with floods. Thus, there is a need for a better system to understand and quantify a mechanism to determine hydrodynamics instability of a vehicle in floodwaters. FLO-LOW enables the road users to input their vehicle information for a proper estimation of safety limits upon crossing the flood prone area. Preferably, the system enables road users to describe and quantify parameters that might cause their vehicles to become vulnerable to being washed away as they enter the flooded area.

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Disasters Worldwide and Floods in the Malaysian Region: A Brief Review

Cited by 32 publications

References 8 publications

Criterion of vehicle instability in floodwaters: past, present and future

Criterion of vehicle instability in floodwaters: past, present and future

Flood resilience in Malaysian cities: a case study of two towns in Johor state

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

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