[全球陆地水储量对地球重力场及地球自转的影响赵娟]

【全球陆地水储量对地球重力场及地球自转的影响赵娟】.pdfTheEffectofContinentalWaterStorage VariationonGravityfieldand EarthRotationVariation by JUAN ZHAO DISSERTATION Presented toBeijingNormal University for admissiontothedegreeof DOCTOROFPHILOSOPHY BeijingNormal University November,2002ACKNOWLEDGEMENTS I express my special thanks to my husband and parents.Without their endless love,unconditional support and encourage,it isimpossibletofinish thethesiswork Thispaper is dedicated tomyhusband.Abstract The gravityfield of the Earth is aphysical property to state the space in, On and above the Earth,contributed by the gravity.The gravityfield exists variation not only on time scalebut alsoon spatial scale.The temporally varying gravity field has secular change,seasonalvariation,irregular
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