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Issue 16 (1) 2017 pp. 53-63

Agnieszka Cupak, Andrzej Wałęga, Bogusław Michalec

University of Agriculture in Krakow

CLUSTER ANALYSIS IN DETERMINATION OF HYDROLOGICALLY HOMOGENEOUS REGIONS WITH LOW FLOW

Keywords: low flow, cluster analysis, regionalization
Abstract:

In the paper results of evaluation of using statistical methods for data agglomeration were made. For determination of hydrological homogeneous regions characterized by low flow and selected physiographic and meteorological features of the catchments cluster analysis was used. The study material included daily flows from the multi-year period of 1963–1983 collected for 15 catchments located in the upper Vistula basin. Low flows were quantified by Q95%, i.e. the discharge that is exceeded on 95% of all days of the measurement period. This low flow characteristic is widely used in Europe and was chosen due to its relevance for multiple choices of water management. Then, Q95% was subsequently standardized by the catchment area and resulting specific low flow discharges q95 dm3 ∙ s–1 ∙ km–2. The calculations and their analysis showed that, statistical methods of data agglomeration may be used for determination of hydrologically homogeneous regions. And with use Ward’s method with cut-off level at 40% two homogeneous regions were identified.

pub/16_1_53.pdf Full text available in in Adobe Acrobat format:
http://www.formatiocircumiectus.actapol.net/volume16/issue1/16_1_53.pdf

DOI: 10.15576/ASP.FC/2017.16.1.53

For citation:

MLA Cupak, Agnieszka, et al. "CLUSTER ANALYSIS IN DETERMINATION OF HYDROLOGICALLY HOMOGENEOUS REGIONS WITH LOW FLOW." Acta Sci.Pol. Form. Cir. 16.1 (2017): 53-63. http://dx.doi.org/10.15576/ASP.FC/2017.16.1.53
APA (2017). . Acta Sci.Pol. Form. Cir. 16 (1), 53-63 http://dx.doi.org/10.15576/ASP.FC/2017.16.1.53
ISO 690 CUPAK, Agnieszka, WAłęGA, Andrzej, MICHALEC, Bogusław. CLUSTER ANALYSIS IN DETERMINATION OF HYDROLOGICALLY HOMOGENEOUS REGIONS WITH LOW FLOW. Acta Sci.Pol. Form. Cir., 2017, 16.1: 53-63. http://dx.doi.org/10.15576/ASP.FC/2017.16.1.53
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Streszczenie w języku polskim:
http://www.formatiocircumiectus.actapol.net/tom16/zeszyt1/abstrakt-53.html