摘要
鉴于黑龙江地处高寒地带凌情特征明显,且洪水多发对黑龙江省造成了严重的损失,定量描述了黑龙江干流11个水文站点的开封河日期、封冻天数和冰厚,分析了凌情影响因素。结果表明,近50年来,封冻日期推迟、解冻日期提前、封冻天数和冰厚逐渐减少,累积负积温与封冻天数、冰厚呈负相关;当年10月至次年4月气温均值与封冻日期、解冻日期相关性良好,但风速和日照时长与凌情特征相关性不显著,水位与开封河日期相关性不显著。
Because Heilongjiang River is located at the alpine zone and its melting ice character is obvious,and frequently flood caused serious damage to Heilongjiang Province,this paper describes the freeze-up date and break-up date,frozen days and frozen ice thickness of 11 hydrologic stations in Heilongjiang River and analyzes the factors influenced melting ice.The results show that the freeze-up date delays,break-up date is in advance,the number of frozen days and the ice thickness gradually reduce.Cumulative negative accumulated temperature has a good negative correlation with the freeze-up days and ice thickness.The average temperature during the October of current year to the April of next year has agood correlation with freeze-up date and break-up date,but the wind speed and sunshine time has no obvious correlation with melting ice characteristics,the correlation of water level with freeze-up date and break-up date is also no obvious.
出处
《水电能源科学》
北大核心
2016年第4期15-18,共4页
Water Resources and Power
基金
国家自然科学基金项目(41371047)
中国科学院战略性先导科技专项(XDA05110102)
水文水资源与水利工程科学国家重点实验室专项经费(1069-514031112)
关键词
黑龙江干流
凌情
特征
影响因素
Heilongjiang main stream
melting ice
characteristics
influencing factor
