【当人们遇到紧急情况时该怎么做?比方地震,火灾.最好是英文】-查字典问答网
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  【当人们遇到紧急情况时该怎么做?比方地震,火灾.最好是英文】

  当人们遇到紧急情况时该怎么做?比方地震,火灾.最好是英文

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2020-08-12 16:49
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李庆中

  Anearthquakeisaphenomenonthatresultsfromandispoweredbythesuddenreleaseofstoredenergythatradiatesseismicwaves.AttheEarth'ssurface,earthquakesmaymanifestthemselvesbyashakingordisplacementofthegroundandsometimestsunamis,whichmayleadtolossoflifeanddestructionofproperty.

  Earthquakesmayoccurnaturallyorasaresultofhumanactivities.Initsmostgenericsense,thewordearthquakeisusedtodescribeanyseismicevent—whetheranaturalphenomenonoraneventcausedbyhumans—thatgeneratesseismicwaves.

  Measuringearthquakes

  Mainarticle:Seismicscale

  SinceseismologistscannotdirectlyobserveruptureintheEarth'sinterior,theyrelyongeodeticmeasurementsandnumericalexperimentstoanalyzeseismicwavesandaccuratelyassessseverityofearthquakes.Theseverityofanearthquakecanbemeasuredintermsofmagnitudeandintensity.Forthatseismologistsusetwofundamentallydifferentbutequallyimportanttypesofscales.Theoriginalforceorenergyofanearthquakeismeasuredonamagnitudescale,whiletheintensityofshakingoccurringatanygivenpointontheEarth'ssurfaceismeasuredonanintensityscale.

  Whilethenon-specializedmediawilloftenrefertothemagnitudesofearthquakesasbeingreportedontheRichterscale,themagnitudesreportednowadaysareactuallyonthemomentmagnitudescale.TheolderRichterscaleisnotadaptedforlargerearthquakes.

  Theanalysesofearthquakeseverityallowscientiststoestimatethelocationsandlikelihoodsoffutureearthquakes,helpingidentifyareasofgreatesthazardandensuresafetyofpeopleandinfrastructurelocatedinsuchareas.

  Anearthquakeisaphenomenonthatresultsfromandispoweredbythesuddenreleaseofstoredenergyinthecrustthatpropagatesseismicwaves.AttheEarth'ssurface,earthquakesmaymanifestthemselvesbyashakingordisplacementofthegroundandsometimestsunamis,whichmayleadtolossoflifeanddestructionofproperty.

  Earthquakesmayoccurnaturallyorasaresultofhumanactivities.Initsmostgenericsense,thewordearthquakeisusedtodescribeanyseismicevent—whetheranaturalphenomenonoraneventcausedbyhumans—thatgeneratesseismicwaves.

2020-08-12 16:53:13

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