Uncertainty of flow regime characteristics of rivers in Europe
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Date
2013
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Wydział Nauk Geograficznych i Geologicznych Uniwersytetu im. Adama Mickiewicza
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Abstract
The aim of the paper is to describe spatial differences in the uncertainty of features of the flow regimes
of rivers in Europe on the basis of measures whose methodological assumptions derive from Shannon’s information
entropy theory (1948). They included: the entropy of monthly flow volumes, the entropy of the flow
distribution over time, and the entropy of maximum and minimum monthly flows. An analysis was made of
monthly flow series for the years 1951–1990 from 510 gauging stations located on 369 rivers in Europe. It allowed
a quantitative determination of the degree of uncertainty of the four regime characteristics, indirectly establishing
the predictability, regularity and stability of their appearance and their spatial variability. In the procedure
of identification of spatial differences among rivers concerning the uncertainty of their flow regime features, use
was made of local indices of spatial dependence. On application of LISA (Local Indicators of Spatial Association)
based on Moran’s local Ii statistic, a typology of rivers was obtained in terms of the kind and statistical significance
of spatial associations involving the uncertainty of the flow regime variables in question.
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Keywords
river regime, Europe, entropy, local spatial association
Citation
Quaestiones Geographicae vol. 32 (1), 2013, pp. 43-53.
ISBN
978-83-62662-62-3