Spatial Vulnerability of Network Systems under Spatially Local Hazards

A hazard is often spatially local in a network system, but its impact can spread out through network topology and become global. To qualitatively and quantitatively assess the impact of spatially local hazards on network systems, this article develops a new spatial vulnerability model by taking into...

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Bibliographic Details
Published in:Risk analysis 2019-01, Vol.39 (1), p.162-179
Main Authors: Hu, Xiao‐Bing, Li, Hang, Guo, XiaoMei, Gelder, Pieter H. A. J. M., Shi, Peijun
Format: Article
Language:English
Subjects:
Case studies
Hazard assessment
Network property
network system
Risk assessment
spatially local hazard
Subways
Topology
Vulnerability
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Summary:A hazard is often spatially local in a network system, but its impact can spread out through network topology and become global. To qualitatively and quantitatively assess the impact of spatially local hazards on network systems, this article develops a new spatial vulnerability model by taking into account hazard location, area covered by hazard, and impact of hazard (including direct impact and indirect impact), and proposes an absolute spatial vulnerability index (ASVI) and a relative spatial vulnerability index (RSVI). The relationship between the new model and some relevant traditional network properties is also analyzed. A case study on the spatial vulnerability of the Chinese civil aviation network system is conducted to demonstrate the effectiveness of the model, and another case study on the Beijing subway network system to verify its relationship with traditional network properties.
ISSN:0272-4332
1539-6924
DOI:10.1111/risa.12986