Glendale (PDF) - Hazard Mitigation Web Portal - State of California

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Natural Hazards Mitigation PlanCity of Glendale, CaliforniaAppendix E – GlossaryHazardHazard eventHazard identificationHazard mitigationHazard profileHazUS (HazardsU.S.)HoloceneHurricaneHydrologyInfrastructureIntensityLandslideLateral spreadsA source of potential danger or adverse condition. Hazards in thishow to series will include naturally occurring events such as floods,earthquakes, tornadoes, tsunami, coastal storms, landslides, andwildfires that strike populated areas. A natural event is a hazard whenit has the potential to harm people or property.A specific occurrence of a particular type of hazard.The process of identifying hazards that threaten an area.Sustained actions taken to reduce or eliminate long-term risk fromhazards and their effects.A description of the physical characteristics of hazards and adetermination of various descriptors including magnitude, duration,frequency, probability, and extent. In most cases, a community canmost easily use these descriptors when they are recorded anddisplayed as maps.A GIS-based nationally standardized earthquake loss estimation tooldeveloped by FEMA.An epoch of the Quaternary period spanning from the end of thePleistocene to the present time (the past about 11,000 years).An intense tropical cyclone, formed in the atmosphere over warmocean areas, in which wind speeds reach 74-miles-per-hour or moreand blow in a large spiral around a relatively calm center or "eye."Hurricanes develop over the north Atlantic Ocean, northeast PacificOcean, or the south Pacific Ocean east of 160°E longitude. Hurricanecirculation is counter-clockwise in the Northern Hemisphere andclockwise in the Southern Hemisphere.The science of dealing with the waters of the earth. A flood dischargeis developed by a hydrologic study.Refers to the public services of a community that have a direct impacton the quality of life. Infrastructure includes communicationtechnology such as phone lines or Internet access, vital services suchas public water supplies and sewer treatment facilities, and includes anarea's transportation system such as airports, heliports; highways,bridges, tunnels, roadbeds, overpasses, railways, bridges, rail yards,depots; and waterways, canals, locks, seaports, ferries, harbors,drydocks, piers and regional dams.A measure of the effects of a hazard event at a particular place.A general term covering a wide variety of mass-movement landformsand processes involving the downslope transport, under gravitationalinfluence, of soil and rock material en masse.Lateral movements in a fractured mass of rock or soil which resultfrom liquefaction or plastic flow or subjacent materials.2006 PAGE E - 6
Natural Hazards Mitigation PlanCity of Glendale, CaliforniaAppendix E – GlossaryLiquefactionLoadsLowest floorMagnitudeMajor earthquakeMaximumMagnitudeEarthquake (Mmax)Maximum ProbableEarthquake (MPE)Moderate earthquakeMitigation planNational FloodInsurance Program(NFIP)National GeodeticVertical Datum of1929 (NGVD)Changing of soils (unconsolidated alluvium) from a solid state toweaker state unable to support structures; where the material behavessimilar to a liquid as a consequence of earthquake shaking. Thetransformation of cohesionless soils from a solid or liquid state as aresult of increased pore pressure and reduced effective stress.Forces or other actions that result from the weight of all buildingmaterials, occupants and their possessions, environmental effects,differential movement, and restrained dimensional changes.Permanent loads are those in which variations over time are rare or ofsmall magnitude. All other loads are variable loads.Under the NFIP, the lowest floor of the lowest enclosed area(including basement) of a structure.A measure of the strength of a hazard event. The magnitude (alsoreferred to as severity) of a given hazard event is usually determinedusing technical measures specific to the hazard.Capable of widespread, heavy damage up to 50+ miles from epicenter;generally near Magnitude range 6.5 to 7.0 or greater, but can be less,depending on rupture mechanism, depth of earthquake, locationrelative to urban centers, etcThe highest magnitude earthquake a fault is capable of producingbased on physical limitations, such as the length of the fault or faultsegment.The design size of the earthquake expected to occur within a timeframe of interest, for example within 30 years or 100 years, dependingon the purpose, lifetime or importance of the facility.Magnitude/frequency relationships are based on historic seismicity,fault slip rates, or mathematical models. The more critical the facility,the longer the time period considered.Capable of causing considerable to severe damage, generally in therange of Magnitude 5.0 to 6.0 (Modified Mercalli Intensity
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City CouncilDave Weaver, MayorRafi
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Natural Hazards Mitigation PlanCity
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Table 4-2: STAPLEE Ranking of Actio
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NOTES:This map is intended for gene
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City of GlendaleUpdateHazard Mitiga
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Similar to Safety ElementIncludesEa
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HospitalsPartnershipsWithin City an
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Impact on CityMost significant area
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