Indirect economic impact of landslide hazards by disruption to national road transportation networks; Scotland, United Kingdo

Ben Postance (1251606)

John K. Hillier (3147690)

Neil Dixon (1361892)

Tom Dijkstra (7175867)

English

Loughborough University Institutional Repository

Geophysical Research AbstractsVol. 18, EGU2016-4439-1, 2016EGU General Assembly 2016© Author(s) 2016. CC Attribution 3.0 License.Indirect economic impact of landslide hazards by disruption to nationalroad transportation networks; Scotland, United Kingdom.Benjamin Postance (1), John Hillier (2), Tom Dijkstra (3), and Neil Dixon (4)(1) Department of Geography, Loughborough University, Loughborough, United Kingdom, (2) Department of Geography,Loughborough University, Loughborough, United Kingdom, (3) British Geological Survey, Keyworth, United Kingdom, (4)Civil and Building Engineering, Loughborough University, Loughborough, United KingdomThe failure of engineered or natural slopes which support or are adjacent to transportation systems often inflictscostly direct physical damage and indirect system disruption. The consequences and severity of indirect impactsvary according to which links, nodes or network facilities are physically disrupted. Moreover, it is often the casethat multiple slope failure disruptions are triggered simultaneously following prolonged or intense precipitationevents due to a degree of local homogeneity of slope characteristics and materials. This study investigates theapplication of national commuter statistics and network agent simulation to evaluate indirect impacts of landslideevents disrupting the Scottish trunk road transportation network (UK). Previous studies often employ shortest path-way analysis whereas agent simulation has received relatively little attention. British Geological Survey GeoSurelandslide susceptibility data is used to select 35 susceptible trunk road segments by means of neighbouring totalarea at risk. For each of the candidate 35 segments the network and zonal variation in travel time is calculated for asingle day of disruption, economic impact is approximated using established governmental and industry transportplanning and appraisal values. The results highlight that a number of trunk road segments incur indirect economiclosses in the order of tens of thousands of pounds for each day of closure. Calculated losses at the A83 Rest and BeThankful are 50% greater than previous estimates at £5 thousand per day of closure. Also highlighted are eventsin which economic impact is relatively minor, yet concentrating on particular communities that can become sub-stantially isolated as a consequence of a single event. The findings of this study are of interest and support widerinvestigations exploring cost considerations for decision makers and mitigation strategies, in addition to identifyingnetwork topological and demand indicators conducive to high indirect economic cost events.

Indirect economic impact of landslide hazards by disruption to national road transportation networks; Scotland, United Kingdom

https://repository.lboro.ac.uk/articles/Indirect_economic_impact_of_landslide_hazards_by_disruption_to_national_road_transportation_networks_Scotland_United_Kingdom/9486107/files/17111414.pdf

Indirect economic impact of landslide hazards by disruption to national road transportation networks; Scotland, United Kingdom

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