岷江中上游徑流時(shí)間序列特征分析.pdf

1、四川師范大學(xué)碩士學(xué)位論文岷江中上游徑流時(shí)間序列特征分析姓名：甄英申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：自然地理學(xué)指導(dǎo)教師：姜世中20100323UpstreamRunofftimeSequenceCharacteristicsofMinjingMajor：GeographyPostGraduate：ZhenYingTutor：JiangShizhongAbstract：HydrologicalstationontheMinjiang1966—2002

2、ZiPingputhemonthlyrunoffdata，theuseofchaostheoryandwavelettransformintheupperreachesofMinjiangRiverRunoffonananalysisofthelawandtheupperreachesofMinjiangRiverarearunoffpredictedChaostheorycalculatedby：delay彳=3，embeddingd

3、imensionm=8，usingtheprincipalcomponentspectraisanegativeslopethroughthe做edpointandastraightline，thismethodtoverifytherunofftimeseriesischaoticThewaveletanalysisinthestudyarearunoffseriesthereareseveraltimescalesofperiodi

4、cvariationSpringrunoffseriestherewas4a、16aaroundthemaincycletothemainperiodoftheoscillationenergyofthemostpowerful16a；summerrunoffseriesabouttheexistence25a、65a、95aprimarycycle；autumnrunoffseriesthere2a、65a、lla、22aaround

5、themaincycletothemainperiodoftheoscillationenergyofthemostpowerful1la；winterrunoffseriesthereis25a、45aandl2a、185aaroundthemaincycle，especiallyinthemainperiodoftheoscillationenergyofthemostpowerful185aThestudyarea，annualr

6、unoffseriestherewas45a、7a、12a、20ascalearoundthemaincycle，especiallyinthemainperiodoftheoscillationenergyofthemostpowerful7aThemainperiodofrunoffoffourseasonsconcentratedinthesmalltimescale，theoscillationenergyofthemostpo