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Spatial Vulnerability of Network Systems under Spatially Local Hazards
Author(s) -
Hu XiaoBing,
Li Hang,
Guo XiaoMei,
Gelder Pieter H. A. J. M.,
Shi Peijun
Publication year - 2019
Publication title -
risk analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.972
H-Index - 130
eISSN - 1539-6924
pISSN - 0272-4332
DOI - 10.1111/risa.12986
Subject(s) - vulnerability (computing) , hazard , beijing , spatial network , vulnerability index , vulnerability assessment , computer science , geography , environmental resource management , environmental science , computer security , china , mathematics , psychological resilience , psychology , ecology , chemistry , geometry , organic chemistry , archaeology , climate change , psychotherapist , biology
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.