Scenario shakemaps for Montreal

Ghofrani, Hadi; Atkinson, Gail M.; Chouinard, Luc; Rosset, Philippe; Tiampo, K. F.

doi:10.1139/cjce-2014-0496

Cited by 9 publications

(5 citation statements)

References 37 publications

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“…The method proposed in this paper integrates the data involving hazard and vulnerability analysis. The seismic hazard at the local scale is based on an existing soil microzonation [25,26,[28][29][30][31]. The vulnerability assessments for masonry buildings are based on the analyses performed by Lefebvre [32].…”

Section: Methods To Assess the Vulnerability Of The Hotel Sectormentioning

confidence: 99%

“…Except for the 1732 M5.8 earthquake, which destroyed approximately 300 houses, the Montreal area has been affected by relatively weak events. However, recent estimates of seismic hazard and risk studies have shown that Modified Mercalli Intensities (MMIs) of VII and VIII events can be expected in the future [28]. On average, extensive and complete damage could affect approximately 0.5% of the total building stock and cause casualties (fatalities plus injuries) varying between 350 and 500 depending on the time of the earthquake occurrence [29].…”

Section: Introductionmentioning

confidence: 99%

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A Quantitative Approach to Assess Seismic Vulnerability of Touristic Accommodations: Case Study in Montreal, Canada

2021

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In many places of the world, the interruption of touristic activities in the aftermath of a catastrophic earthquake is often neglected in the evaluation of seismic risks; however, these activities can account for a significant proportion of short-term and long-term economic impacts for these regions. In the last decade, several rapid visual screening techniques have been developed to define the typology of buildings and to estimate their seismic vulnerability and potential for damage. We adapted the existing screening procedures that have been developed for generic buildings to specific circumstances that are most common for tourist accommodations. The proposed approach considered six criteria related to structural and nonstructural elements of buildings, as well as local soil conditions. A score was assigned to each criterion as a function of the capacity of the elements to resist ground shaking. A vulnerability index in four levels of building vulnerability was developed combining the scores of the six criteria. The approach was tested in a pilot area of Montreal to a set of 70 typical buildings grouped in four categories based on their accommodation capacity. In Montreal, tourism is an important source of income for the city where 351,000 room-nights were booked with total stay expenditures of CAD 4.9 billion in 2019. The results indicated potential significant disruptions in activities related to tourism; 46% of the buildings investigated have a high to very high vulnerability index. Among them, 4/5 are located in the old city and 1/5 in the downtown area of the pilot zone.

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Section: Methods To Assess the Vulnerability Of The Hotel Sectormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Quantitative Approach to Assess Seismic Vulnerability of Touristic Accommodations: Case Study in Montreal, Canada

2021

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“…In terms of seismic risk, Montreal ranks as the second-highest city in Canada after Vancouver due to its seismicity and high population density. [25][26][27] Therefore, prioritizing earthquake loss assessment of residential buildings is vital. As illustrated in Figure 1, the circular chart presents the percentage of residential units in Montreal, categorized by building types.…”

Section: Introductionmentioning

confidence: 99%

“…Eastern Canada is a seismic‐prone region and comprises large cities, including Montreal, Ottawa, and Quebec City. In terms of seismic risk, Montreal ranks as the second‐highest city in Canada after Vancouver due to its seismicity and high population density 25–27 . Therefore, prioritizing earthquake loss assessment of residential buildings is vital.…”

Section: Introductionmentioning

confidence: 99%

Earthquake economic loss assessment of existing concrete shear wall residential buildings in Eastern Canada

Montazeri,

Abo El Ezz

2024

Earthquake Engineering and Resilience

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Past major earthquakes have demonstrated that a significant proportion of existing residential buildings are vulnerable to seismic hazards, resulting in economic and social losses. The assessment of earthquake‐induced losses is crucial for devising strategies aimed at enhancing seismic resilience through mitigation plans and emergency response measures. This study intends to provide an analytical methodology for evaluating economic losses for existing residential concrete shear wall buildings in Eastern Canada seismic zones based on Canadian‐compatible seismic capacity parameters. A sampled data set related to residential buildings in Montreal was analyzed and statistical distributions were developed that represent the proportion of buildings in different seismic design code levels and number of stories. Vulnerability analyses were performed, which involved estimating buildings' response under seismic hazard inputs according to the 2020 National Building Code of Canada and conducting loss assessment for structural components, nonstructural displacement‐sensitive components, nonstructural acceleration‐sensitive components, and contents. The results of vulnerability analyses in terms of loss ratio curves showed that the seismic performance varies between mid‐rise and high‐rise concrete shear wall buildings with different seismic design code levels, and nonstructural displacement‐sensitive components exerted the most significant influence on overall economic losses among building components. In addition, a comparison was conducted between Canadian‐compatible economic loss ratio curves and those developed based on the standard seismic capacity parameters in the Hazus technical manual and differences in predicted loss ratios were discussed. The developed loss ratio curves can be integrated into regional scale loss assessment tools for rapid estimation of earthquake‐induced economic losses for concrete shear wall buildings as a function of seismic intensity.

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“…The microzonation map is derived by combining information from seismic measurements and borehole data (Rosset, Bour, & Chouinard, 2015). The maps have been used to obtain Shakemap scenarios (Ghofrani, Atkinson, Chouinard, Rosset, & Tiampo, 2015) but has never been validated since no significantly large and close earthquake occurred in recent times and also because the seismic network in this region is very limited in number and quality of stations.…”

Section: Introductionmentioning

confidence: 99%

Correlating DYFI Data With Seismic Microzonation in the Region of Montreal

Rosset¹,

Bent²,

Chouinard³

2020

ESR

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The Western Quebec seismic zone has moderate seismic activity with few historical damaging earthquakes. Nevertheless, recent risk analyses have shown that the combination of a high level of urbanization with soft soil deposits in the metropolitan area of Montreal could lead to significant damage and economic losses. Over the two decades, several projects have been completed to develop a seismic microzonation to identify zones where seismic waves could be amplified. During the same period, Natural Resources Canada developed an internet application to collect reports from the population after an earthquake and to convert them to the Modified Mercalli Intensity scale (MMI). This paper presents a first comparison of the MMI data compiled after eight recent earthquakes felt in Montreal area with the existing zonation in terms of soil classes. It shows that the MMI from individual reports increases when the observer is located in a soft soil zone. Statistics on average MMI over a regular grid confirms this trend. The numerous reports collected through the internet application, and future applications based on data collected from social media, could become a very useful source of information to complement seismic field measurements when developing and validating seismic microzonation maps.

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Scenario shakemaps for Montreal

Cited by 9 publications

References 37 publications

A Quantitative Approach to Assess Seismic Vulnerability of Touristic Accommodations: Case Study in Montreal, Canada

A Quantitative Approach to Assess Seismic Vulnerability of Touristic Accommodations: Case Study in Montreal, Canada

Earthquake economic loss assessment of existing concrete shear wall residential buildings in Eastern Canada

Correlating DYFI Data With Seismic Microzonation in the Region of Montreal

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