22692.祁連山擺浪河小冰期和末次冰盛期冰量變化探討

1、中國科學(xué)院研究生院碩士學(xué)位論文祁連山擺浪河小冰期和末次冰盛期冰量變化探討姓名：吳家章申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：自然地理學(xué)指導(dǎo)教師：易朝路201205ABSTRACTTENTATIVESTUDYOFTHEICEVOLUMEVIRATIONSDURINGTHELIAANDLGMINTHEBAILANGHERVERVALLEY，THEQILIANMOUNTAINSAbstract、vUJiazhang(PhysicalGeography)Dir

2、ectedbyYIChaoluGlaciers14and16lieintheupperreachoftheBailangheRivervalleyinthemiddleofQilianshanThe10BenuclideexposuredatingshowsthattwosetsofmoraineinthevalleywereproducedintheLastGlaciationMaximum(LGM)andLiRleIceAge(LI

3、A)stage，respectivelyWeinvestigatedmorainesinthevalleyinfieldandmeasuredtheirmorphologyintheDGPSUsingthedigitalelevationmodel(DEM)ofthesurfaceofGlacier12inLaohugouinMountDaxueshan，westernQilianshan，weestablishedquadratice

4、quationsofglaciersurfaceandthenappliedthemtosimulatetheglaciersurfaceofGlacier14and16inBailangheRivervalleyUsingtheMatLabforanalysis，wereconstructedthechangesoftheiceareaandvolumeintheLGMandLL～Primaryresultsandconclusion

5、sareasfollowThechangesinglacierareaandvolumeforGlacier16weregreaterthanthoseofGlacier14duetobiggerslopeandmoredebriscoverageoniceintheformerthanthelatterThechangeratesofglacierareaandvolumeintheLGMweregreaterthanthoseint

6、heLL～TheyweregreaterintheBailangheRivervalleythanthoseintheShuleheRivervalleyinwesternQilianshan，whichwerereportedbyotherresearchers，duetothedecreaseofprecipitationandtemperaturefromeasttowestTheicevolumedecreasedbyO38km