气候变化领域集成服务门户(CCPortal): Changes in the discharge regime of Finnish rivers

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DOI	10.1016/j.ejrh.2024.101749
	Changes in the discharge regime of Finnish rivers
	Lintunen, Karoliina; Kasvi, Elina; Uvo, Cintia B.; Alho, Petteri
发表日期	2024
EISSN	2214-5818
起始页码	53
卷号	53
英文摘要	Study region: Finland divided into three subregions, each representing different environmental conditions. Study focus: This study investigates long-term changes in unregulated river discharge. Trends in high- and low-flow event volumes, magnitudes, timings, and frequencies are analysed across 36 gauging stations in 19 watershed areas from 1911 to 2021. The average measurement period for discharge in the stations is 60 years, with over 765,000 daily records examined statistically. New hydrological insights for the region: High-flow events show advancing timings and decreasing magnitudes, notably in the coastal region and less so in the north. These events, occurring from 6 to 68 days earlier in 21 stations, now in the late winter and early spring, align with increasing spring low-flow volumes. On a monthly scale, a trend of rising volume magnitude is observed in late autumn, winter, and early spring, especially in Northern Finland's rivers. High flows during autumn and winter occur 30 to 60 days later in 8 stations. Changes in the monthly mean volumes were found in 30 stations, suggesting a redistribution of annual volumes across a broader time period, while the overall annual volumes have remained relatively unchanged. This underscores the complexity of hydrological patterns, emphasizing the need to consider total volumes and their temporal distribution in analyses. The findings enhance understanding of current changes and align with findings in the boreal-subarctic area.
英文关键词	Time series analysis; Discharge; Trends; Finnish rivers
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:001215118100001
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297068
作者单位	University of Turku; Finnish Environment Institute; Lund University; The National Land Survey of Finland
推荐引用方式 GB/T 7714	Lintunen, Karoliina,Kasvi, Elina,Uvo, Cintia B.,et al. Changes in the discharge regime of Finnish rivers[J],2024,53.
APA	Lintunen, Karoliina,Kasvi, Elina,Uvo, Cintia B.,&Alho, Petteri.(2024).Changes in the discharge regime of Finnish rivers.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,53.
MLA	Lintunen, Karoliina,et al."Changes in the discharge regime of Finnish rivers".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 53(2024).