城乡交界处的丛林火灾风险 – T2-A5.pdf

1、Bushfire risk at the ruralurban interface T2-A5Dr Grant WilliamsonSenior Research Fellow,School of Natural Sciences,University of TasmaniaBushfire behaviour and mitigation strategies Project OverviewToolsIntegrationCommunicationSocialPerceptionsAttitudes/ValuesBarriersGeospatialHouse Loss ModelsEmbe

2、rsMulti-scale Hazard MappingBiophysicalPlant flammabilityGarden/Landscape-Hazard MappingT2-A5 Bushfire Risk at the Rural-Urban InterfaceProf David BowmanA/Prof Owen PriceDr Grant WilliamsonDr Stefania OndeiDr Amila WickramasingheDr Anna GjedremDr Sharon CampbellBiophysical Plant FlammabilityBiophysi

3、cal Defensible SpaceBiophysical Garden Design/AssessmentBiophysical LiDAR Assessment Investigate the suitability of LiDAR data to estimate garden fire hazards Compare results from high-and low-res LiDAR Can we support/replace on-ground assessment?High resolutionLow resolutionGeospatial House LossDat

4、a2574 houses destroyed across NSWAttribute with weather from time of fire progressionAttribute with distance from Bushfire Prone LandGeospatial Ember ModellingPhysics-based numerical simulation of ember storms:oIncludes LiDAR-derived vegetation,terrain,and house layout.oSimulated under a range of we

5、ather conditions(temperature,wind,FFDI)oSimulates wind with eddies and turbulence.oOutput ember density informs empirical modelGeospatial Ember HazardQuantile regression of ember simulation data as function of fuel load and fire dangerTransform into geographic spaceGeospatial Radiant Heat HazardRadi

6、ant heat modelling of safe distance from fireline(for given vegetation,fuel load,weather)for building to withstand BAL 12.5Compared to actual distance of building from vegetationAccounts for topography,fire run,multiple approach directionsG