Multiple natural hazards risk assessment for UNESCO in three cities (2017-09-18)

<br/> Activation date: 2017-09-18 <br/> Event type: Other <br/> <br/> Activation reason: <br/> Pre‐disaster situation analysis: Exposure, Vulnerability &amp; Risk Assessment&hellip; To generate comprehensive knowledge forAdequate Disaster PreparednessEfficient support &amp; informed decision making; planning and recovery activities of the involved stakeholdersAssessment of occurrence &amp; severity of potential secondary risks (Soil/ Coastal erosion)Proposals for risk-specific mitigation measuresCritical information for development and management of first response infrastructuresKey user: UNESCO, Section on Earth Sciences &amp; Geo-Hazards Risk ReductionUNESCO projects Support:Enhancing Natural HAzard resilience iN South America (ENHANS)School Safety&nbsp; project MappingPotential Severity of the RisksGeneration of Detailed (1:5000 mapping scale) Thematic Information to assist/focus contingency planning towards minimizing loss of life &amp; damages.Earthquake: Probabilistic seismic hazard (PSHA); mean PGA values for 10% probability of exceedance in 50 years, corresponding to a return period of 475 years.Flood: The evaluation of the flood risk for Tacna &amp; Arica was based on a flood susceptibility index, while for Maputo, Flood modelling was applied (TELEMAC‐2D hydraulic model).&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tsunami (Arica): Following an historical analysis, the earthquake event of 13th August 1868 of magnitude M8.8 that shook Chile‐Peru was selected as worst‐case tsunami scenario.Landslide hazard was assessed for the triggering factors of heavy rainfall and earthquake.Soil erosion due to rainfall was assessed (Revised Universal Soil Loss Equation) as well as Coastal erosion (Maputo area only), which accounts for potential of coastal change due to future sea‐level rise and the exposed assets and population.Reference topographic data and ancillary information at 1:5000 scaleLand Use/ Cover Mapping: Corine Land Cover Level 4 categorization within the built-up areasReference Information Mapping: Data capture from VHR satellite images acquired during 2016 and 2017 and open data integration&nbsp; <br/> <br/>