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Chapter3chemicalandphysicalfeaturesofseawaterandtheworldoceanUniquenatureofpurewater水形态/formFig.3.1热值/heatvalueFig.3.3WaterassolventSaltcompositionofseawaterSaltoriginSeawater-waterquality硬度/hardnessSalinity,temperature,anddensityTemperatureprofile/温度断面图Thermocline/温跃层(fig.3.8)Transparency/透明度Fig.3.11EffectstotransparentPressure/压力Stratifiedandstabilityofwatercolumn/水体分层和稳定ThreelayeredoceanFig.3.15Overturn/垂直交换Fig.3.17Motionintheocean/海洋运动WindformingWindpatternWindpatternSurfacecurrent/表层流Oceangyres/大洋环流CurrentsregulateearthtemperatureOceangyresandoceansurfacetemperatureWaveWavemotionStormwindpushthewavecrestsupintosharppeaksandstretchesoutthetroughstocreateseas/波涛,andthenswell/涌浪。Whenthewavesapproachshoreandgetintoshallowwater,it“pileup”,becominghigherandsteepandformingsurf/碎波.Wave(tsunami/海啸)thatkill(1992-)Springtide/大潮,高潮Neaptide/小潮,低潮Semidiurnaltide/半日潮Mixedsemidiurnaltide/混合半日潮Diurnaltide/周日潮,一日潮。WorldwidedistributionofthreetypeoftideWhyaretheretideFig.3.31八分算潮法CriticthinkingTeamworkIntroduction