GeomaticsandInformationScienceofWuhanUniversity Vol.38No.4 Apr.2013 : (2013) :A 1 1,2 1 (1, 129,430079) (2, 129,430079)

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1 GeoaticsandInforationScienceofWuhanUniversity Vol.38No.4 Apr.2013 : (2013) :A ( ) ( ) : 利用我国南极中山站 ~ 的验潮数据采用调和分析得到了中山站附近海域潮汐 170 个分潮的调和常数对调和分析的结果进行统计分析发现了传统调和分析方法的局限性提出了提高调和分析分辨率的方法采用更高的采样率或使用更长时间的数据给出了中山站的主要潮汐特征值及工程潮位 : 南极中山站 ; 调和分析 ; 潮汐特征 :P T12: d8857 [1] [2-4] ; 8857 [5] 5 ; [6] ( ) 2000~ S E [8] (1on 1a ) 369d [7] 1h Rayleigh Δσ h Fortran % ±3 [9] [7] ( ) : 2000~2005 ζ ( t)= A 0 + fjh j cos[σjt+ j=1 : : (2012CB957701); ( ); (CHINARE-01-03CHINARE )

2 380 (V 0 +u) j -gj ] +x(t) (1) [7] σ=0 h -1 : ζ ( t)= fjh j cos[σjt+ (V 0 +u) ] j -gj +x(t) j=0 (2) fjh j =R j (V 0+u) j -gj = -θj A j = R j cosθj B j =R j sinθj B 0 0 : ζ ( t)= (A j cosσjt+b j sinσjt)+x(t)(3) j=0 (3) =170 j=0 A 0 j=1~ (4) (5) σ= ( ζ n - ~ ζn) 2 χ 2 (6) 槡 n-2-1 Δt=1ht n (8857); [-NN]N=4428 Rayleigh (170); ζ n ; 珘 ζ n Δσ Δt ζ n- 珘 ζ 2N 360( h -1 ) n A 10 in B [10] : σa =σb = 槡 2 n σ (7) σa 0 = 槡 1 n σ (8) : σh =σa =σb (9) σg = 1 H 2 σa = 1 H 2 σb (10) χ H K1 +H O1 H M2 3 ( H g) R = (A 2 +B 2 ) 1/2 5 烄烅 θ=arctan B (4) χ 烆 A χ 2 烄 H = R 0.05 f (5) 烅烆 g =V 0 +u+θ 2.3 χ 2 : 1 Δσ ( h -1 ); 19a Δσ ( h -1 ) 472 [11] χ 2 Tab.1 Resultsofχ 2 TestforResidualofHaronicAnalysis >3σ >2σ χ2 χ2 χ χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= χ 2 ( )= d 8761 ESR 170 1a ESR 2

3 38 4 : ~0.2c 0.1c 0.4 c; -1.3 ~ ESR H 1 8 g( ) ( 3) ( Fig.1 TieSeriesofTidalHaronicConstants ) c ( 2 ) 1% ~14%; 1.8 ESR Tab.2 TidalHaronicConstantsofDavisStation 0.9 PublishedbyESRandThose WeCalculated 0.1%~3.8% N2 ( ) 0.9c % 3.8% [11] /c /( ) ESR ESR Q ± ± O ± ± P ± ± K ± ± N ± ± M ± ± S ± ± K ± ± Tab.3 TidalHaronicConstantsof8PriaryConstituentsatZhongshanStation H/c g/( ) H/c g/( ) H/c g/( ) H/c g/( ) H/c g/( ) H/c g/( ) Q O P K N M S K d 9h N2 9h a 2h ~ % % % 2h h

4 ~2005 Tab.4 TidalNon-haronicConstantsofZhongshan Station c 167c 97c 48c 59c 129c 72c 19h 99c 3h 25c 54c 19h21in 97c 7h35in 124c 2h17in 70c 1h47in 7h 56in 1) 2) N2 3) 2 3 2h Fig.2 CurveofCuulativeFrequency ofhighandlow Tide 25c; 10% 1.9 Fig.3 CurveofCuulativeFrequency of2 HoursforHighandLow Tide 102h 9h; 99c [5]. 90% 0.4; 70% 2h [6]. [J]. 1.1 致谢 : 感谢澳大利亚南极局 (AAD) 和澳大利亚潮汐中心 (NTC) 在我国南极中山验潮站的数据下载及数据处理中给予的帮助 [1]. [9]. [J] (2): [2] W ppelanngmartin MiguezB MBouin M N etal.geocentric Sea-level Trend Estiatesfro GPSAnalysesatRelevantTideGauges World-Wide [J].GlobalandPlanetaryChange200757: [3]. GPS : [J] (10): [4] DouglasBC.GlobalSeaLevelRise:aRedeteri- nation[j].surveysingeophysics199718: [J] (10): (2):59-62 [7] [M]. : [8] [J] (4): [J] (4): [10]. [J]. 1995(1):31-37 [11]. 19 [J] (2): E-ail:edongchen@whu.edu.cn ( 下转第 464 页 )

5 464 ReoteSensingIageSegentationBasedon Modified InforationCutin WaveletDoain FU Huijing 1 TIAN Zheng 12 RAN Maohua 3 HE Feiyue 1 (1 SchoolofScienceNorthwesternPolytechnicalUniversity1DongdaRoadXi an710129china) (2 SchoolofCoputerScienceNorthwesternPolytechnicalUniversity1DongdaRoadXi an710129china) (3 TheSecondArtileryCoandInstitute180ErqiRoadWuhan430012China) Abstract:Tosolvetheis-clusterscausedbythetraditionalinforationcut(IC)algorith whenitisappliedtosegentiageswithgraychangesaodifiedinforationcutinwave- letdoain (W-MIC)algorithisproposed.FirstitodifiesICusinganewParzenwindo- wingwhichcobinesthegrayrelevanceandspacerelevancebetweeniagepixelsinorderto reducetheefectofgraychangestoiagesegentation.furtherconsideringthedificulties ofselectingtheoptialparaeterintheaboveodifiedinforationcut(mic)micisin- troducedtowaveletdoaintoreducethecoplexityofparaeterselectionviathesoothing roleofwavelet.reotesensingiagesegentationresultsdeonstratethatitefectively decreasestheinfluenceofparaetersselectionanditcannotonlyavoidthe is-clusters causedbygraychangesbutalsokeepiageedges. Keywords:RSiagesegentation;inforationcut;undeciatedwavelettransforation Aboutthefirstauthor:FUHuijingPh.Dcandidateajorsinreotesensingiageprocessing. E-ail:fxy0204@ 126.co 檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪 ( 上接第 382 页 ) AnalysisofTidalFeaturesofZhongshanStationEastAntarctic E Dongchen 1 HUANG Jifeng 12 ZHANG Shengkai 1 (1 ChineseAntarcticCenterofSurveyingand MappingWuhanUniversity129LuoyuRoadWuhan430079China) (2 SchoolofGeodesyandGeoaticsWuhanUniversity129LuoyuRoadWuhan430079China) Abstract:Theharonicconstantsof170tidalconstituentsatZhongshanStationEastAnt- arcticareobtainedfrothetidedatalastingfro Feb.2000toOct.2005usingclassichar- onicanalysisethod.chi-squaretestisappliedtotheresidualwhichdeonstratesthe disadvantageoftheclassicharonicanalysis.a higherintervalofthetidedataoralonger periodofdataissuggestedtobeadoptedtoiprovethedistinguishabilityoftidalconstitu- ents.resultsoftheharonicanalysisshowthatthetidetypeofzhongshanstationisirregu- lardiurnaltide.theaintidalcharacteristicvalueandengineeringwaterlevelarealsocalcu- lated. Keywords:ZhongshanStationEastAntarctic;haronicanalysis;tidalfeatures Aboutthefirstauthor:EDongchenprofessorPh.DsupervisoreberofInternationalEurasianAcadeyofSciencesajorsinpolar geoinforatics. E-ail:edongchen@whu.edu.cn