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Interactions between apparently ‘primary’ weather-driven hazards and their cost

By John K. Hillier, Neil Macdonald, Gregor C. Leckebusch and A. Stavrinides


This is an Open Access Article. It is published by Institute of Physics under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: statistical analysis of the largest weather-driven hazards in the UK contradicts the typical view that each predominates in distinct events that do not interact with those of other hazard types i.e., are ‘primary’; this potentially has implications for any multiIhazard environments globally where some types of severe event are still thought to occur independently. By a first co-investigation of long((1884-2008) meteorological time-series and nationwide insurance losses for UK domestic houses (averaging(£1.1(billion/yr), new systematic interactions within a 1-year \ud timeframe are identified between temporally-distinct floods, winter wind storms, and shrink-swell subsidence events(P*<*0.03); this increases costs by up to £0.3 billion/yr(i.e.,(26%), although impacts will be spatially variable depending upon the interplay of hazards. 'Memory' required in the environmental system to cause these intra-annual links between event types\ud appears to reside in soil moisture and, tentatively, sea surface temperatures. Similar, unidentified interactions between non-synchronous events are likely worldwide, and the analytical methods we have developed to identify and quantify them are suitable for application to meteorological, geological e.g., volcanic and cryospheric (e.g., avalanches) hazards

Topics: Atmospheric,, Interactions, Extreme weather
Publisher: © IOP Publishing
Year: 2015
DOI identifier: 10.1088/1748-9326/10/10/104003
OAI identifier:

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