OBS浊度计测量泥沙浓度的方法与实践研究薛元忠

20048JournalofSedimentResearch4:2003-07-07:(973)(2002CB412407):(1944-),,,,OBS薛元忠,何青,王元叶(,200062):,,,:;;;;:TV149:A:0468-155X(2004)04-0056-05,,,,(OpticalBackScatteringOBS),,,,,,,,,,1OBS,,,,(90),901Fig.1Opticalparticledetectors(90),1140~160,,,OBS,2,,;,;,2OBS-3AD&A,,3,562Fig.2Scatteringsintensityvsangle5030,140~160,80cm,30cm,25cmAD,,OBS,RS_232,OBS-3A,OBS3A3OBS3AFig.3SketchmapofOBSworkingprinciple12VDC,41,IO,:0_4000FTU0~200m0~3840PSU2.0%2.0%0.0750.1PSU331OBS_3A,(Survey),OBS_3A;(Log),OBS_3A,,:/Hzs260~2009004~10256~1024300~9004~860~1024900~3600:(data)(Time)mOBSFTU%VOBS160;40~3600,,,;2003217225,,OBS,4;,5OBS-3ACTD,,574Fig.4VerticaldistributionofsuspendedsedimentconcentrationmeasuredbyOBSinFeb.2003,ChangjiangEstuary4,,,,,017kgm303kgm3,,,,,,02kgm308kgm35,,,,,32OBS,5(NTUOBS)Fig.5TimeseriesofsuspendedsedimentconcentrationmeasuredbyOBSinFeb.2003,ChangjiangEstuary6(:R2=0.99;:R2=0.77Fig.6RelationshipbetweenNTUandsuspendedsedimentconcentration4000FTU,,FORMAZINFTU(FormazinTurbidityunit);AEP_INTU(NephelometryTurbidityunit)OBS,OBS,,OBS,,OBS,,1,20~30;,,,,,OBS,,,OBS,,,0,,5%~10%,10~20,6,R2=077,R2=099OBS58,,,77Fig.7RelationshipbetweenNTUandsuspendedsedimentconcentrationofdifferentsizeparticles7,,,1m,,,,,,30m,4OBSOBS,,,41OBS,,02500m(,),10m100m10,,35,,,,OBS42,,,,5kgm3,743,,,1044OBS,OBS,,,45,OBS,,4~6OBS,OBS,46OBS,,,,,595(1)OBS3A,(2)OBS3A,,,(3)OBS3A,,(4)OBS3A(5)OBS3A5kgm3,:[1]OBS3AinstructionmanualD&AInstrumentCompany[B].Rev10.2001.[2]._[J].,1989,(3):35-43.[3].[J].,1992,(2).[4],.[J].,1990,(2):1-2.[5].[J].,1990,(1):86-90.[6],.[B].,1991,8.ThemethodandapplicationofOBSinthemeasurementofsedimentconcentrationXUEYuan_zhong,HEQing,WANGYuan_ye(StateKeyLab.ofEstuarineandCoastalResearch,EastChinaNormalUniversity,Shanghai200062)Abstract:Thepapermainlyanalyzesthemeasurementprinciple,instrumentconstructionandsedimentcalibrationofOpticalBackScattering.TherelationshipbetweenwaterturbidityandsedimentconcentrationisrevealedandtheapplicationfeasibilityintheYangtzeRiverisdiscussed.Keywords:OpticalBackScattering;turbidity;sedimentconcentration;sedimentcalibration;YangtzeRiverEstu-ary60