Interdependent Risk in Interacting Infrastructure Systems

Conference · Mon Jan 01 00:00:00 EST 2007

DOI:https://doi.org/10.1109/HICSS.2007.285· OSTI ID:932146

Carreras, Benjamin A ^[1]; Newman, David E ^[2]; Gradney, Paul ^[3]; Lynch, Vickie E ^[1]; Dobson, Ian ^[1]

---

1. ORNL
2. University of Alaska
3. University of Wisconsin, Madison

Critical infrastructures display many of the characteristic properties of complex systems. They exhibit infrequent large failures events that often obey a power law distribution in their probability versus size. This power law behavior suggests that conventional risk analysis does not apply to these systems. It is thought that some of this behavior comes from different parts of the systems interacting with each other both in space and time. While these complex infrastructure systems can exhibit these characteristics on their own, in reality these individual infrastructure systems interact with each other in even more complicated ways. This interaction can lead to increased or decreased risk of failure in the individual systems. To investigate this, we couple two complex system models and investigate the effect of the coupling on the characteristic properties of the systems such as the probability distribution of events.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: Work for Others (WFO)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 932146
• Resource Relation: Conference: 40th Annual Hawaii International Conference on System Sciences (HICSS'07), Waikoloa, Big Island, HI, USA, 20070103, 20070106
• Country of Publication: United States
• Language: English