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:1672643X(2023)01001010
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 ,thetrendsurfaceanalysiswas
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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