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Interdependence and dynamics of essential services in an extensive risk context: a case study in Montserrat, West Indies

Sword-Daniels, VL; Rossetto, T; Wilson, TM; Sargeant, S; (2015) Interdependence and dynamics of essential services in an extensive risk context: a case study in Montserrat, West Indies. Natural Hazards and Earth System Science , 15 (5) pp. 947-961. 10.5194/nhess-15-947-2015. Green open access

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Abstract

The essential services that support urban living are complex and interdependent, and their disruption in disasters directly affects society. Yet there are few empirical studies to inform our understanding of the vulnerabilities and resilience of complex infrastructure systems in disasters. This research takes a systems thinking approach to explore the dynamic behaviour of a network of essential services, in the presence and absence of volcanic ashfall hazards in Montserrat, West Indies. Adopting a case study methodology and qualitative methods to gather empirical data, we centre the study on the healthcare system and its interconnected network of essential services. We identify different types of relationship between sectors and develop a new interdependence classification system for analysis. Relationships are further categorised by hazard conditions, for use in extensive risk contexts. During heightened volcanic activity, relationships between systems transform in both number and type: connections increase across the network by 41%, and adapt to increase cooperation and information sharing. Interconnections add capacities to the network, increasing the resilience of prioritised sectors. This in-depth and context-specific approach provides a new methodology for studying the dynamics of infrastructure interdependence in an extensive risk context, and can be adapted for use in other hazard contexts.

Type: Article
Title: Interdependence and dynamics of essential services in an extensive risk context: a case study in Montserrat, West Indies
Open access status: An open access version is available from UCL Discovery
DOI: 10.5194/nhess-15-947-2015
Publisher version: http://dx.doi.org/10.5194/nhess-15-947-2015
Language: English
Additional information: © Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Institute for Risk and Disaster Reduction
URI: http://discovery.ucl.ac.uk/id/eprint/1470806
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