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

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

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Natural <strong>Hazard</strong>s <strong>Mitigation</strong> PlanCity <strong>of</strong> <strong>Glendale</strong>, <strong>California</strong>Appendix E – GlossaryFlood InsuranceStudy (FIS)FloodplainFloodplainmanagementFloodplainmanagementregulationsFrequencyFunctionaldowntimeGeographic areaimpactedGeographicInformation Systems(GIS)GeotechnicalengineerGround motionGround ruptureUnder the National Flood Insurance Program, an examination,evaluation, and determination <strong>of</strong> flood hazards and, if appropriate,corresponding water surface elevations, or an examination, evaluation,and determination <strong>of</strong> mudslide (i.e., mudflow) and/or flood-relatederosion hazards in a community or communities. (Note: The NationalFlood Insurance Program regulations refer to Flood Insurance Studiesas “flood elevation studies.”)Any land area, including watercourse, susceptible to partial orcomplete inundation by water from any source.Operation <strong>of</strong> an overall program <strong>of</strong> corrective and preventivemeasures for reducing flood damage, including but not limited toemergency preparedness plans, flood control works, and floodplainmanagement regulations.Under the National Flood Insurance Program, zoning ordinances,subdivision regulations, building codes, health regulations, specialpurpose ordinances (such as floodplain ordinance, grading ordinance,and erosion control ordinance), and other applications <strong>of</strong> police power.The term describes such state or local regulations, in any combinationthere<strong>of</strong>, which provide standards for the purpose <strong>of</strong> flood damageprevention and reduction.A measure <strong>of</strong> how <strong>of</strong>ten events <strong>of</strong> a particular magnitude are expectedto occur. Frequency describes how <strong>of</strong>ten a hazard <strong>of</strong> a specificmagnitude, duration, and/or extent typically occurs, on average.Statistically, a hazard with a 100-year recurrence interval is expectedto occur once every 100 years on average, and would have a 1 percentchance – its probability – <strong>of</strong> happening in any given year. Thereliability <strong>of</strong> this information varies depending on the kind <strong>of</strong> hazardbeing considered.The average time (in days) during which a function (business orservice) is unable to provide its services due to a hazard event.The physical area in which the effects <strong>of</strong> the hazard are experienced.A computer s<strong>of</strong>tware application that relates physical features on theEarth to a database to be used for mapping and analysis.A licensed civil engineer who is also certified by the <strong>State</strong> as qualifiedfor the investigation and engineering evaluation <strong>of</strong> earth materialsand their interaction with earth retention systems, structuralfoundations, and other civil engineering works.The vibration or shaking <strong>of</strong> the ground during an earthquake. When afault ruptures, seismic waves radiate, causing the ground to vibrate.The severity <strong>of</strong> the vibration increases with the amount <strong>of</strong> energyreleased and decreases with distance from the causative fault orepicenter, but s<strong>of</strong>t soils can further amplify ground motionsDisplacement <strong>of</strong> the earth's surface as a result <strong>of</strong> fault movementassociated with an earthquake.2006 PAGE E - 5

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