Comparison of Tests for Trend in Location and Scaleparameters in Hydrological and Precipitation Time Series

Rutkowska, Agnieszka; Kohnová, Silvia

doi:10.15576/asp.fc/2020.19.4.43

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…The Mann-Kendall test outdistances other nonparametric trend tests due to its simplicity and wide scope of application (Tosunoglu and Kisi, 2017). It is widely used in hydrological analyses (Rutkowska, 2013;Stasik, Kęsicka and Korytowski, 2020;Tadesse and Dinka, 2022], climate change analyses (Azizzadeh and Javan, 2015;Skowera et al, 2015;Bougara et al, 2021;Gadedjisso-Tossou, Adjegan and Kablan, 2021), and water (Rogora et al, 2015;Zeleňáková, Purcz and Oravcová, 2015;Dąbrowska et al, 2016;Kanownik, Policht-Latawiec and Fudała, 2019) and air quality analyses (Wang et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

Impact of a small storage reservoir on the hydro-chemical regime of a flysch stream: A case study for the Korzeń stream (Poland)

Fudała,

Bogdał,

Kowalik

2024

Journal of Water and Land Development

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The paper presents in form of a case study the results of 10-year long hydro-chemical studies on the Korzeń stream on which the "Skrzyszów" small storage reservoir was built. Studies aimed at evaluating the impact of the reservoir on the surface water quality in a Flysch stream. The basis for the analysis was results of 21 hydro-chemical water quality parameters, from the following groups of indicators: physical and acidity, oxygen and organic pollution, biogenic, salinity, metals. Indicators were determined in one-month intervals in two periods: 2005-2009 (before the reservoir was built) and 2015-2019 (after the reservoir was built). Obtained results were subjected to a statistical analysis. The trend analysis of changes was performed using the Mann-Kendall test or the seasonal Kendall test; significance of differences between indicator values from two periods was evaluated using the nonparametric Mann-Whitney U test. Results of analysis showed significant change trends of water quality parameters, in case of total iron concentration the trend was downward in both periods. Statistically significant differences between the values of definite majority of indicators were found in two analysed periods, indicating both favourable and unfavourable impact of the reservoir on water quality in the stream. Construction of the storage reservoir resulted in a significant change of physical and chemical indicators of water flowing in the stream. Random variation dynamics as well as tendencies and trends of changes over time have changed. In addition to modifying the stream hydro-chemical regime, the reservoir also affected the social and natural conditions.

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Section: Methodsmentioning

confidence: 99%

Impact of a small storage reservoir on the hydro-chemical regime of a flysch stream: A case study for the Korzeń stream (Poland)

Fudała,

Bogdał,

Kowalik

2024

Journal of Water and Land Development

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The Cucconi Test for Location-scale Alternatives in Application to Asymmetric Hydrological Variables

Rutkowska

Banasik

2015

Communications in Statistics - Simulation and Computation

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To identify location-scale trends, which environmental data often exhibit, location-scale tests have to be addressed. The aim of this article was to estimate size and power of the Cucconi rank-based test when applied to various skewed distributions, typical in hydrology. Results of the Monte Carlo simulation revealed great power for series with low coefficient of variation, time of change close to the middle, not very heavy tail, and with length of at least 60. Comparison to the Lepage test discovered larger usefulness of the Cucconi test for short series and change close to the middle. Several practical applications were presented.

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Comparison of Tests for Trend in Location and Scaleparameters in Hydrological and Precipitation Time Series

Cited by 2 publications

References 27 publications

Impact of a small storage reservoir on the hydro-chemical regime of a flysch stream: A case study for the Korzeń stream (Poland)

Impact of a small storage reservoir on the hydro-chemical regime of a flysch stream: A case study for the Korzeń stream (Poland)

The Cucconi Test for Location-scale Alternatives in Application to Asymmetric Hydrological Variables

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