Jalali Shahrood A, Ahrari A, Rossi PM, Klöve B, Torabi Haghighi A. RiTiCE: River Flow Timing Characteristics and Extremes in the Arctic Region. Water. 2023; 15(5):861. https://doi.org/10.3390/w15050861
RiTiCE : River flow Timing Characteristics and Extremes in the Arctic region
|Author:||Jalali Shahrood, Abolfazl1; Ahrari, Amirhossein1; Rossi, Pekka M.1;|
1Water, Energy and Environmental Engineering Research Unit, University of Oulu, P.O. Box 8000 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 3.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20230925136318
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2023-09-25
(1) Background: river ice has a significant impact on nearly 66% of rivers in the Northern Hemisphere. Ice builds up during winter when the flow gradually reduces to its lowest level before the spring melt is initiated. Ice-induced floods can happen quickly, posing a risk to infrastructure, hydropower generation, and public safety, in addition to ecological repercussions from the scouring and erosion of the riverbeds.
(2) Methods: we used the annual daily hydrograph to develop a RiTiCE tool that detects the break-up date and develops indices to analyze timing characteristics of extreme flow in the Tana and Tornio Rivers.
(3) Results: the study showed that low-flow periods in two rivers had a significant trend with a confidence level of 95%. Additionally, it was observed that the occurrence date of seasonal 90-day low- and high-flow periods occurred earlier in recent years. Conversely, the Tana River showed a negative trend in its annual minimum flow over the century, which is the opposite of what happened with the Tornio River.
(4) Conclusions: the method can be used to detect the date when the river ice breaks up in a given year, leading to a better understanding of the river ice phenomenon.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
218 Environmental engineering
This research was funded by the University of Oulu & the Academy of Finland Profi4 TTK Arcl (Grant No. 318930) and Maa- ja vesitekniikan tuki ry (MVTT, Grant No. 43588).
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).