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OCEANTIDELOADINGCORRECTIONONLONGPERIODEARTH TIDALGRAVITYOBSERVATIONATWUHANSTATION |
ZhouJiangcun1,2;andSunHeping1 |
1)KeyLaboratoryofDynamicalGeodesy,InstituteofGeodesyandGeophysics,CAS,Wuhan 430077 2)GraduateUniversityofChineseAcademyofSciences,Beijing 100049 |
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Abstract ApplyingthelongtermtidalparametersgravityobtainedwiththeVAVandEtemasoftwares,the gravityobservationswithsuperconductinggravimeteratWuhanstationandontheoceantidemodels:TPXO5, TPXO6,TPXO7,NAO99andFES04.Wehavemadetheoceantideloadingcorrectiontotheseobservations.The numericalresultsshowthattheresidualsofconstituentsofMmandMfaremainlycausedbyoceantideloading.The correctedamplitudefactorsareclosertothetheoreticalonesofwhichthedifferencesdecreasefrom3.4% and2. 5% to0.16% and0.12% respectively.Duetothelowsignalnoiseratioofthelongperiodconstituentswithrelativelysmallamplitudes,thetidalparametersoftheseconstituentsaredifficulttobemeasuredaccuratelyatpresent. Thisisalsoprovedbytheresultsofoceantideloadingcorrection.
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Key words:
longperiodearthtidalgravity
tidalparameter
oceantideloadingcorrection
superconductinggravimeter
oceantidemodel
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Received: 01 January 1900
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Corresponding Authors:
ZhouJiangcu
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Cite this article: |
ZhouJiangcun,andSunHeping. OCEANTIDELOADINGCORRECTIONONLONGPERIODEARTH TIDALGRAVITYOBSERVATIONATWUHANSTATION[J]. , 2007, 27(6): 28-32.
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ZhouJiangcun,andSunHeping. OCEANTIDELOADINGCORRECTIONONLONGPERIODEARTH TIDALGRAVITYOBSERVATIONATWUHANSTATION[J]. jgg, 2007, 27(6): 28-32.
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URL: |
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I6/28 |
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