Typologia reżimu odpływu rzek w Polsce w podejściu nadzorowanym i nienadzorowanym
Date
2017
Authors
Advisor
Editor
Journal Title
Journal ISSN
Volume Title
Publisher
Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
Title alternative
Abstract
The paper presents a typology of the river regime in Poland obtained with the application of a supervised
approach, i.e. a classic typology according to the assumptions of Dynowska with a regime typology
obtained in an unsupervised approach by means of hierarchical grouping. In both cases, the explanatory variables
were monthly flow coefficients – respectively: only from spring and summer months, with predefined
threshold values, or 12-month flow coefficients. The paper applied daily flow values from the period 1971–
2010 for 516 gauges located on 280 Polish rivers. In both approaches, five types of regime were designated,
including rivers characterised by a similar distribution and range of monthly runoff values in an average annual
cycle. The designated groups, however, differ in abundance, which affects the image of spatial distribution of
rivers representing the types of regime identified. The analysis shows that irrespective of the adopted method
of designation, two types of regime, namely nival poorly developed and pluvio-nival are evidently characterised
by different patterns of flow variability in an average annual cycle, and concern similar groups of rivers.
Description
Sponsor
Keywords
river runoff, hydrological regime, hierarchical clustering, flow coefficient (Pardé)
Citation
Badania Fizjograficzne, Seria A, Tom 68, 2017, s. 253-264