Rainfall and runoff regime trends in mountain catchments: case study area: the upper Hron River basin, Slovakia

Title:

Rainfall and runoff regime trends in mountain catchments: case study area: the upper Hron River basin, Slovakia

Creator:

Blahušiaková, Andrea and Matoušková, Milada

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:5a32b77e-d247-44e9-9f4e-ea8b212908fb
uuid:5a32b77e-d247-44e9-9f4e-ea8b212908fb
doi:10.1515/johh-2015-0030

Subject:

trend analysis, rainfall-runoff regime, Mann-Kendall test, IHA software, Hron River basin, 7, and 556

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

This paper presents an analysis of trends and causes of changes of selected hydroclimatic variables influencing the runoff regime in the upper Hron River basin (Slovakia). Different methods for identifying trends in data series are evaluated and include: simple mass curve analysis, linear regression, frequency analysis of flood events, use of the Indicators of Hydrological Alteration software, and the Mann-Kendall test. Analyses are performed for data from two periods (1931-2010 and 1961-2010). The changes in runoff are significant, especially in terms of lower QMax and 75 percentile values. This fact is also confirmed by the lower frequency and extremity of flood events. The 1980s are considered a turning point in the development of all hydroclimatic variables. The Mann-Kendall test shows a significant decrease in runoff in the winter period. The main causes of runoff decline are: the considerable increase in air temperature, the decrease in snow cover depth and changes in seasonal distribution of precipitation amounts., Andrea Blahušiaková, Milada Matoušková., and Obsahuje bibliografické odkazy

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

183-192

Source:

Journal of hydrology and hydromechanics | 2015 Volume:63 | Number:3

Harvested from:

CDK

Metadata only:

false