摘要
基于闽江下游多个观测站1993年~2018年的潮位观测数据资料,对闽江下游潮汐时空变化特征进行统计分析,获得上下游多年平均高潮位、低潮位、潮差、最大涨落潮历时特征值,得出闽江下游段近26年来潮汐特征变化过程。结果表明:闽江下游河段整体表现为高潮位缓慢下降、低潮位显著下降;涨落潮潮差增大;涨潮历时延长、落潮历时缩短的特征。时空格局上,上游站位潮汐特征变幅大于下游站位,低潮位变幅大于高潮位变幅。
Based on the tidal level observation data of multiple observation stations in the lower reaches of Minjiang River from 1993 to 2018, statistical analysis was performed on the temporal and spatial chan ges of die tides in the lower reaches of the Minjiang River to obtain the average high tide level, low tide level, tidal range, and maximum fluctuation tide duration of the upper and lower reaches for many years. Characteristic value, the tidal characteristic change process of the lower reaches of Minjiang River in the past 26 years is obtained. The results show that the lower reaches of Minjiang River generally show a slow decline in high tide level and a significant decrease in low tide level;the tide range of rising and falling tides increases;the duration of rising tide is prolonged and the duration of falling tide is shortened. In the spatiotemporal pattern, the tidal characteristics of the upstream stations are larger than those of the downstream stations, and the low-hdal ones are larger than the high-tidal ones.
作者
温宛隽
Wen Wanjun(Minjiang River Estuary Hydrological Experimental Station of Fujian Hydrological and Water Resources Survey Bureau,Fuzhou 350002,Fujian)
出处
《陕西水利》
2020年第1期36-38,共3页
Shaanxi Water Resources
基金
闽江感咸河段动态边界特征及水文信息收集系统研究。
关键词
变化特征
潮汐
潮差
闽江下游
Change characteristics
tide
tidal range
lower reaches of Minjiang River
