穩(wěn)封期冰厚及開(kāi)河水位分析.pdf

1、陽(yáng)醯鋤軸分類號(hào)：!!!望密級(jí)：——單位代碼：】Q墨嫂學(xué)號(hào)：鬯塑里翌竺侖肥工學(xué)大警HefeiUniversityofTechnology碩士學(xué)位論文MASTERDISSERTATIoN②論文題目：穩(wěn)封期冰厚及開(kāi)河水位分析學(xué)位類別：學(xué)科專業(yè)：(工程領(lǐng)域)作者姓名：導(dǎo)師姓名：完成時(shí)間：學(xué)歷碩士水文學(xué)及水資源顧李華王軍教授2007年5月StudyonIceCoverThicknessofStabilityRiverClosedPeriodand

2、紓臺(tái)terLevelof0nsetofRiverIceBreakupAbstractIceisacommonphenomenonintheriversofcoldregionsRiversintheseregionsoftenformtheicecovertheicejamortheicedaminwinterandtheywillbringvariousicedisastersAtpresentforecastwaterlevelof

3、onsetofrivericebreakupandicecoverthicknessundernaturalconditionisdifficultThecalculationofwaterlevelofonsetofrivericebreakupisinvolvingtothecalculationofonsetdateofrivericebreakup，butonsetdateoffivericebreakupisverydiffi

4、culttoestimateOnthefoundationofanalysetheglacierepochhydrologydatathroughtheyearsinHequsegmentofYellowRiver，tally叩awayforcalculationtowaterlevelofonsetofrivericebreakupwithoutthequantitykeylinkformIcecoverthicknesshaveth

5、erelationwithaccumulationaveragenegativeairtemperatureofaday，F(xiàn)oundusingaccumulatedaveragenegativeairtemperatureofadayand”lastfactor”methodtheerroroftheicethicknessisgreatlyinlastphaseoftheglacierepochBaseonanalysetherela

6、tionbetweentheicethicknessandthermodynamicenergyfactorinHequsegmentofYellowRiver，weimprovethemethodwhichusingaccumulatedaveragenegativeairtemperatureofaday，theproblemoflargeerroroficethicknessinlastphaseoftheglacierepoch

7、canberesolvedThen，builtuptheMultipleIndexRegressionmodelonthisfoundation，andforecastwaterlevelofonsetofrivericebreakupundernaturalconditionAtlast，ireprovethemethodwhichusingaccumulatedaveragenegativeairtemperatureofadaya