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STATISTICAL ASSESSMENT OF THE RUNOFF TIME SERIES HOMOGENEITY OF THE RIVERS IN BELARUS

STATISTICAL ASSESSMENT OF THE RUNOFF TIME SERIES HOMOGENEITY OF THE RIVERS IN BELARUS

Abstract

The article considers the need to evaluate the homogeneity of hydrological series using several statistical criteria, since the effectiveness of methods for testing homogeneity depends on the distribution of data. In addition to the officially recommended statistical parametric Student and Fisher criteria for this purpose, the Buishand tests, the standard normal homogeneity test and the nonparametric Pettitt test were tested to assess the homogeneity of the time series of the runoff of rivers in Belarus. Based on the application of tests for series of different types of runoff, the classification of the studied series is carried out depending on the number of tests confirming the homogeneity hypothesis. В статье рассмотрена необходимость оценивания однородности гидрологических рядов с использованием нескольких статистических критериев, поскольку эффективность методов тестирования однородности зависит от распределения данных. Кроме официально рекомендуемых для этих целей статистических параметрических критериев Стьюдента и Фишера, для оценки однородности временных рядов стока рек Беларуси апробированы тесты Буишанда, стандартный нормальный тест на однородность и непараметрический тест Петтитта. На основании применения тестов для рядов различных видов стока проведена классификация исследуемых рядов в зависимости от количества тестов, подтверждающих гипотезу однородности.

Keywords

однородность, homogeneity, points of decomposition, точки разладки, статистические критерии, river runoff, classes of homogeneity, речной сток, классы однородности, statistical criteria

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
hybrid