北仑河口北冲西淤形成与环境因素的影响分析-陈宪云

AnalysisonenvironmentalfactorsaffectingtheformationofnorthscouringandwestsiltationinBeilunestuaryCHENXian-yun1,DONGDe-xin1,GUOPei-fang2,SHIMao-chong2,CHENBo1（1.GuangxiKeyLaboratoryofMarineEnvironmentalScience,GuangxiAcademyofSciences,Nanning530007,China;2.OceanUniversityofChina,Qingdao266100,China）AbstractTheresearchshowsthatthesedimentofBeiunestuarycomesmainlyfromtwoaspects:carriedbyBeilunriveranditssurroundingsmallrivers,liftedbycurrentandwavecombinedeffect.Sedimentproducedbytheformerismorethanthatbythelatter.Inthefloodseasonofsummer,mostsedimentwhichiscarriedbyrunoffsiltsnearthewaterway,andformslargeshoalsinestuary.Sincethe1980s,withtheurbanizationaccelerating,waterusehasincreasedyearbyyearalongtheriver,andriversedimenttransporthassignificantlyreduced.ThemainchannelwhichisaffectedbycurrenthasleanedtoChineseside,andtheriverbederosionhasbeenincreasedcontinuallyinthecaseoftheupstreamsandsupplyreduction.Asaresult,thetrendofnorthscouringandwestsiltationintheestuaryhasbeencreated.KeywordsBeilunestuary;sedimentsource;channelscouringandsiltation;environmentalfactor112211.5300072.266100。。。2080。。P737.23A1001-6932201502-0175-062014-05-132014-07-23412660021355007-13。1986-。。[e-mail]。。[e-mail].。107km55.8km。6km37.4km229.1km260%。。77.25km39.1km22.3km15.8km。、、、、19980.154~0.125mm47.61~69.47%0.076~0.063mm28.02~30.54%1.8km0.2~0.6km。。MARINESCIENCEBULLETINVol.34，No.2Apr.201534220154Doi10.11840/j.issn.1001-6392.2015.02.008http//hytb.nmdis.org.cn34http//hytb.nmdis.org.cn2.2km“”3km2m5m1。1996198919981999200020032009201320132014201110km10m、、ADCP1201152110-221221#、2#1。11998199920001.15。107km55.8km6km11.1km66.5km2。54.1m34-106-880%。22.2t40t。。、2。。。2080。。1.2。201153~70mg·L-12。。201320~30mg·L-1、40~50mg·L-1、10~20mg·L-11●108.0108.1108.21#2#05201002http//hytb.nmdis.org.cn。、10~20mg·L-1。。。1996“”110.0379kg/m30.0235kg/m30.0308kg/m30.0145kg/m3。0.0089kg/m30.0134kg/m3。。。2011。22.12009207019802290232001-201027。2.0m2000。2011929-30“”。2。20119299-123.3m/s13-164.9m/s17-208.0m/s21-245.8m/s。620302。301-47.3m/s14m/s。5-87.7m/s16m/s9-125.5m/s125m/s。1kg/m30.01330.01770.00980.00920.00890.6H0.01290.02350.00760.00830.01450.01490.00830.0090.02500.02570.01200.01360.01340.6H0.03080.02380.01320.01360.02020.03790.01340.01611996。22011928-101/m·s-14/m·s-121-241-45-89-1213-1617-209-281.5NW1.01.21.11.32.11.69-294.2N1.01.52.43.34.98.09-305.9N-S-SW5.87.37.75.56.52.710-11.2W1.91.00.91.81.51.021#、2#201152110h-2212h/mg·L-110∶0015∶0020∶001∶006∶0011∶00/m1#/mg·L-110∶0015∶0020∶001∶006∶0011∶00/m2#34http//hytb.nmdis.org.cn。1065cm。“”10km、10m、、ADCPSW、、103.7cm/s、94.1cm/s71.0cm/sSW60cm/s50cm/s。“”、SSW～WSW65%、WSW18%15.5%NE12.7%、、WSW13.1%、18.2%14%WSW15.3%、NE13.6%16.9%ENE12%、NE18.4%19.7%。SSW～WSW。SSW-WSW。、、。“”。2.2。。。2003。20132014“908”5。53201110km4。926-30“”6.4m60cm/s、、5。。、、、。31。。2。201153~70mg·L-1。。。3。。。。420802http//hytb.nmdis.org.cn4、3AVHRRAMSR5~10SST°°°°°°105.5℃107.5℃109.5℃111.5℃eSep°°°°°°105.5℃107.5℃109.5℃111.5℃fOctN045135180225270315481216°°°°°°105.5℃107.5℃109.5℃111.5℃aMay°°°°°°105.5℃107.5℃109.5℃111.5℃bJun°°°°°°105.5℃107.5℃109.5℃111.5℃cJul°°°°°°105.5℃107.5℃109.5℃111.5℃bJunN90E90135180E481216≤10＞10-20＞20-30＞30-40＞40-50＞50-60＞60-70＞70-80＞80≤10＞10-20＞20-30＞30-40＞40-50＞50-60＞60-70＞70-80＞80270225045cm/scm/s31534http//hytb.nmdis.org.cn5“”2011930a、b、c、、d9/25/119/27/119/29/1110/1/1110/3/1110/5/11//Eabcd02550cm/sN。。GaoJingsongShiMaochongChenBoetal2014.Responsesofthecir－culationandwatermassintheBeibuGulftotheseasonalforcingregimes.ActaOceanolSin3371-11.GaoJingsongXueHuijieChaiFeietal2013.Modelingthecircula－tionintheGulfofTonkinSouthChinaSea.OceanDynamics63979-993.2000..74282-285.1998..14337-39.1999..63227-230.2000.20139-44.2013..32616-21.1996..2009...2003..324-29.1998.-..