Changes in the discharge regime of Finnish rivers
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 ga...
Published in: | Journal of Hydrology: Regional Studies |
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Language: | English |
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Elsevier
2024
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Online Access: | https://lup.lub.lu.se/record/f087380f-36c5-40e2-80f1-3e634bbf62c8 https://doi.org/10.1016/j.ejrh.2024.101749 |
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ftulundlup:oai:lup.lub.lu.se:f087380f-36c5-40e2-80f1-3e634bbf62c8 2024-05-19T07:49:13+00:00 Changes in the discharge regime of Finnish rivers Lintunen, Karoliina Kasvi, Elina Uvo, Cintia B. Alho, Petteri 2024-06 https://lup.lub.lu.se/record/f087380f-36c5-40e2-80f1-3e634bbf62c8 https://doi.org/10.1016/j.ejrh.2024.101749 eng eng Elsevier https://lup.lub.lu.se/record/f087380f-36c5-40e2-80f1-3e634bbf62c8 http://dx.doi.org/10.1016/j.ejrh.2024.101749 scopus:85188676676 Journal of Hydrology: Regional Studies; 53, no 101749 (2024) ISSN: 2214-5818 Oceanography Hydrology Water Resources Discharge Finnish rivers Time series analysis Trends contributiontojournal/article info:eu-repo/semantics/article text 2024 ftulundlup https://doi.org/10.1016/j.ejrh.2024.101749 2024-04-24T00:00:22Z 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. Article in Journal/Newspaper Subarctic Lund University Publications (LUP) Journal of Hydrology: Regional Studies 53 101749 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Oceanography Hydrology Water Resources Discharge Finnish rivers Time series analysis Trends |
spellingShingle |
Oceanography Hydrology Water Resources Discharge Finnish rivers Time series analysis Trends Lintunen, Karoliina Kasvi, Elina Uvo, Cintia B. Alho, Petteri Changes in the discharge regime of Finnish rivers |
topic_facet |
Oceanography Hydrology Water Resources Discharge Finnish rivers Time series analysis Trends |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Lintunen, Karoliina Kasvi, Elina Uvo, Cintia B. Alho, Petteri |
author_facet |
Lintunen, Karoliina Kasvi, Elina Uvo, Cintia B. Alho, Petteri |
author_sort |
Lintunen, Karoliina |
title |
Changes in the discharge regime of Finnish rivers |
title_short |
Changes in the discharge regime of Finnish rivers |
title_full |
Changes in the discharge regime of Finnish rivers |
title_fullStr |
Changes in the discharge regime of Finnish rivers |
title_full_unstemmed |
Changes in the discharge regime of Finnish rivers |
title_sort |
changes in the discharge regime of finnish rivers |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://lup.lub.lu.se/record/f087380f-36c5-40e2-80f1-3e634bbf62c8 https://doi.org/10.1016/j.ejrh.2024.101749 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Journal of Hydrology: Regional Studies; 53, no 101749 (2024) ISSN: 2214-5818 |
op_relation |
https://lup.lub.lu.se/record/f087380f-36c5-40e2-80f1-3e634bbf62c8 http://dx.doi.org/10.1016/j.ejrh.2024.101749 scopus:85188676676 |
op_doi |
https://doi.org/10.1016/j.ejrh.2024.101749 |
container_title |
Journal of Hydrology: Regional Studies |
container_volume |
53 |
container_start_page |
101749 |
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1799467683181232128 |