An integrative agent‐based vertical evacuation risk assessment model for near‐field tsunami hazards

This study couples FN‐curves with Agent‐based Modeling and Simulation (ABMS) to assess risk for tsunamis with various recurrence intervals . By considering both expected number of casualties and the likelihood of tsunami events, multiple series of simulations and in‐depth analyses determine (1) how...

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Vydané v:Risk analysis Ročník 42; číslo 12; s. 2720 - 2734
Hlavní autori: Chen, Chen, Mostafizi, Alireza, Wang, Haizhong, Cox, Dan, Chand, Cadell
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States Blackwell Publishing Ltd 01.12.2022
Predmet:
Agent-based models
agent‐based modeling and simulation
At risk populations
Casualties
Centroids
Evacuation
FN‐curve
Hazard assessment
High risk
Levees
Local authorities
Mortality
Mortality rates
Placement
Recurrence
risk analysis
Risk assessment
Shore lines
Simulation
Topography
tsunami evacuation
Tsunamis
Weather hazards
tsunami evacuation
agent-based modeling and simulation
FN-curve
risk analysis
ISSN:0272-4332, 1539-6924, 1539-6924
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Shrnutí:This study couples FN‐curves with Agent‐based Modeling and Simulation (ABMS) to assess risk for tsunamis with various recurrence intervals . By considering both expected number of casualties and the likelihood of tsunami events, multiple series of simulations and in‐depth analyses determine (1) how vertical evacuation structure (VES) placement impacts mortality rate; (2) what the best evacuation strategies VES locations are; and (3) where evacuees are likely to be caught by tsunami waves. The results from utilizing FN‐curves to conduct disaggregative analyses based on six tsunami scenarios indicate that choosing one tsunami scenario or averaging the risk of different scenarios may not fully articulate VES impacts due to the “levee effect,” which potentially leads to false positives. Findings show that placing VESs close to shorelines saves nearby at‐risk populations, but also results in two risk increasing phenomena: “exposure to risk” (i.e., evacuees being attracted to high risk roads by a VES when evacuating) and “blind zones” (i.e., locations near a VES where evacuees increase their risk by evacuating to that VES). When limited to one VES, placement near a population's centroid results in the lowest mortality rate. More than one VES may lower mortality rate further if VESs are spreading out according to community's topography. In addition to the analysis of tsunamis, the approach of coupling FN‐curves with ABMS can be used by local authorities and engineers to determine tailored hard‐adaptive measures and evacuation strategies, which helps to avoid maladaptive actions in different hazardous events.
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ISSN:0272-4332
1539-6924
1539-6924
DOI:10.1111/risa.13881