Page 14 - 《水资源与水工程学报》2023年第1期
P. 14

!34 " ! 1 #                       & ' ( ) & * + , -                               Vol.34No.1
               2023 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2023

            DOI:10.11705/j.issn.1672-643X.2023.01.02


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                 FGHIJ:P343.3   KLMNO:A    KPQJ:1672643X(2023)01001010

                             AnalysisofBostenLakewaterlevelchangebasedon
                                      satellitealtimetryandmeasureddata

                                                                          2,3,4
                                                       1,4
                                            WUHongbo ,WANGNinglian
                 (1.DepartmentofGeographicalScience,ShaanxiUniversityofTechnology,Hanzhong723000,China;2.ShaanxiKeyof
                  LaboratoryofEarthSurfaceSystemandEnvironmentalCarryingCapacity ,Xi’an710127,China;3.CollegeofUrban
                           andEnvironmentalSciences ,NorthwestUniversity,Xi’an710127,China;4.CASCenterfor
                                   ExcellenceinTibetanPlateauEarthSciences ,Beijing100101,China)
                 Abstract:Thelakewaterlevelisanimportantelementoflakehydrologicalobservation,whichdirectly
                 reflectsthemassexchangeandenergybalanceofthelake.Moreover,theanalysisoflakewaterlevelis
                 vitaltothestudyoflakemovementandregionalclimateandenvironmentalchange.Inordertograspthe
                 changeprocessandspatialcharacteristicsofthewaterlevelofinlandlakes ,bothinstantaneousanddaily
                 meanwaterlevelofXinjiangBostenLakewereextractedfromJason-1&2 ,ENVISat&ERS,ICESat-1
                 andICESat-2satellitealtimetrydata ,whichwerethencomparedwiththewaterlevelrecordofHyd
                 rowebandthemeasureddataofwaterlevelandwaterextentareaofBostenLakefrom1975to2020toas
                 certaintheestimationaccuracyofthesatellitealtimetrydata.Furthemore ,thetrendsurfaceanalysiswas
                 usedtoanalyzethespatialdifferenceandcharacteristicsofwaterlevelchangeinBostenLake.Theresults
                 showedthattheabsoluteerrorofthedailymeanlakewaterleveloftheHydrowebwaterlevelrecord,Ja
                 son-1&2 ,ENVISat&ERS,ICESat-1,ICESat-2satellitealtimetrydatawas0.24,0.34,0.28,0.18
                 and0.08m ,respectively.TheannualmeanwaterlevelofBostenLakein2020reached1,048.1±0.12
                 m ,whichhadanincreaseof0.70±0.15m,comparedwiththatin1975.Thefluctuationofinstantane

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