INTER-ANNUAL AND SEASONAL VARIABILITY OF GROUNDWATER DISCHARGE IN SELECTED LOWLAND CATCHMENTS

被引：0

作者：

Somorowska, Urszula ^{[1
]}

机构：

[1] Uniwersytet Warszawski, Wydzial Geog & Studiow Regionalnych, Krakowskie Przedmiescie 30, PL-00927 Warsaw, Poland

来源：

III KRAJOWY KONGRES HYDROLOGICZNY: HYDROLOGIA W INZYNIERII I OCHRONIE SRODOWISKA | 2018年 / 41卷

关键词：

groundwater discharge; variability; lowland catchments; Poland; BASE-FLOW;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The research was undertaken to determine the groundwater discharge in selected lowland catchments in Poland. Seasonal and inter-annual variability was analyzed in multi-year period of 1981-2016 in ten lowland catchments in Poland. Baseflow was extracted from daily streamflow hydrograph using HYSEP methods. Its contribution to the total discharge is within the range of 79-88%. Monthly mean groundwater discharge was calculated to analyze seasonal variability within the water year. It was proved that monthly maximum occur usually in March, whereas monthly minimum takes place in August till September. Analysis of annual groundwater discharge has revealed differences in inter-annual variability. Signals of groundwater discharge decrease has been detected in recent years in catchments of Mlawka, and Wkra rivers, while opposite tendency has been observed in Liwiec. No significant tendencies were detected in other catchments. Differences in groundwater discharge regime should be explained by further analysis of differences in precipitation recharge and evapotranspiration.

引用

页码：153 / 160

页数：8

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