摘要
针对小清河感潮河段极端水文事件频发问题,以小清河感潮河段为研究对象,根据石村水文站和羊角沟潮位站1980—2019年汛期平均气温、降水及平均水位、潮位数据,采用滑动平均法进行趋势分析,运用Mann-Kendall法、累积距平法及有序聚类法进行突变分析,分别通过线性回归分析和小波分析对水文要素突变前、后与气象要素的相关性和周期性进行分析,探究水文、气象要素之间的内在联系。结果表明:小清河感潮河段汛期水文、气象要素呈不同程度的上升趋势,各水文气象要素均有显著突变点,汛期降水、平均水位及平均低潮位变化有显著周期性,而汛期平均气温和平均高潮位周期波动不明显;除突变前石村水文站汛期平均气温与平均水位的相关性较弱外,其余气象要素与水文要素在突变前、后均具有一定相关性;小清河感潮河段汛期气象要素与汛期平均水位和平均半潮面存在不同时间尺度的共振周期。
In view of the frequent occurrence of extreme hydrological events in the tidal reach of the Xiaoqing River,taking the tidal reach of Xiaoqing River as the research object,based on average temperatureand precipitation,as well as average water and tide level in flood season of Shicun Hydrological Station and Yangjiaogou Tidal Level Stations from 1980 to 2019,the trend analysis was conducted by using moving average method,and mutation analysis was conducted by using Mann-Kendall method,cumulative anomaly method,and ordered clustering method.Linear regression analysis and wav elet analysis were used to analyze the correlation and periodicity between hydrological characteristics and meteorological elements before and after the a brupt change,and explore the internal relationship between hydrological and meteorological elements.The results show that the hydro-meteorological elements in flood season in tidal reach of the Xiaoqing River indicate an upward trend in different degrees.There are significant abrupt change points in all hydrological and meteorological elements.The changes of precipitation,average water level,and average low tide level in flood season have signi-ficant periodicity,while the periodicity of average temperature and average high tide level in flood season is not obvious.
作者
李昱岐
钱秀红
徐华
渠群英
潘维艳
徐征和
徐晶
LI Yuqi;QIAN Xiuhong;XU Hua;QU Qunying;PAN Weiyan;XU Zhenghe;XU Jing(School of Water Conservancy and Environment,University of Jinan,Jinan 250022,Shandong,China;Haihe Huaihe Xiaoqing River Basin Water Conservancy Management Service Center of Shandong Province,Jinan 250014,Shandong,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2023年第4期421-434,共14页
Journal of University of Jinan(Science and Technology)
基金
国家自然科学基金项目(42007153)
山东省自然科学基金项目(ZR2019BEE035)
小清河防洪综合治理工程科学研究试验项目(XQHFHZL-KY202003)。
关键词
感潮河段
汛期
水文要素
气象要素
线性回归分析
小波分析
小清河
tidal reach
flood season
hydrological element
meteorological element
linear regression analysis
wavelet analysis
Xiaoqing River
