CAJ | 학술논문

利用宁夏1991～2010年20 a凌汛期水文和气温序列资料，研究了宁夏凌汛期特征、凌汛灾害发生主要时段，黄河封河、开河集中期与日平均气温之间的关系。结果表明：宁夏凌汛特征为封开河时序相反，小流量、高水位行洪，受强冷空气影响较大；凌汛灾害主要发生在封河和开河期间；日平均气温正负转化日期与封、开河期有对应关系，宁夏封河集中期在12月20日至1月19日；开河集中日期在2月13～20日。在凌汛关键期结合MODIS遥感数据对凌汛灾害监测防范有一定指导意义。
이용저하1991～2010년20 a릉신기수문화기온서렬자료，연구료저하릉신기특정、릉신재해발생주요시단，황하봉하、개하집중기여일평균기온지간적관계。결과표명：저하릉신특정위봉개하시서상반，소류량、고수위행홍，수강랭공기영향교대；릉신재해주요발생재봉하화개하기간；일평균기온정부전화일기여봉、개하기유대응관계，저하봉하집중기재12월20일지1월19일；개하집중일기재2월13～20일。재릉신관건기결합MODIS요감수거대릉신재해감측방범유일정지도의의。
Based on the hydrological data and temperature series in the ice flooding seasons from 1991 to 2010,the variation of daily temperature in ice flooding seasons,the main occurring period of ice flooding disaster,and the relationship between the freezing-up/breaking-up periods of the Yellow River in Ningxia section and daily mean temperature were studied.The results show that time se-quence of the freezing-up and the breaking-up of the river was reversed.When a ice flooding occurred,the flow of the Yellow River in Ningxia was small and the water level was high.The ice flooding was affected by the strong cold air.Ice flooding disasters occurred mainly during the periods of freezing-up and breaking-up of the river.The date when daily mean temperature transfered from positive to negative or negative to positive was corresponding to the periods of freezing-up and breaking-up of the river.The concentrated date was from December 20 to January 19 for freezing-up,and for breaking-up,it was from February 13 to 20.Using MODIS remote sensing data to monitor and prevent ice flooding disaster had some guiding significance in the critical period of ice flooding.