Manca Petek (Author), Mira Kobold (Author), Mojca Šraj (Author)

Abstract

Poznavanje in napovedovanje nizkih pretokov predstavlja eno pomembnejših nalog učinkovitega upravljanja z vodami. Zaradi neugodne razporeditve padavin tekom leta, predstavlja suša in z njo povezano pomanjkanje vode v zadnjih letih tudi za Slovenijo velik problem. Za natančno in učinkovito analizo nizkih pretokov je treba analizirati več kazalnikov, hkrati pa morajo biti rezultati takih analiz pravilno ovrednoteni. V članku smo predstavili glavne kazalnike nizkih pretokov ter izvedli njihov izračun za 55 vodomernih postaj v Sloveniji. Med izbranimi kazalniki so indeks baznega odtoka, nekatere statistike nizkih pretokov (srednji letni n-dnevni minimum ter srednji, 70-, 90-, in 95-odstotni pretok), indeks sezonskosti in razmerje sezonskosti ter recesijska konstanta. Za izračun in analizo obravnavanih kazalnikov smo uporabili programsko orodje R in temu namenjen paket lfstat. Rezultati so predstavljeni tako analitično kot grafično, obenem pa je med kazalniki izvedena korelacijska analiza za ovrednotenje razmerij med njimi.

Keywords

nizki pretoki;kazalniki;bazni pretoki;hidrologija;

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: Univerza v Ljubljani, Fakulteta za gradbeništvo in geodezijo
UDC: 519.2:532.533(497.4)
COBISS: 7125089 Link will open in a new window
ISSN: 0352-3551
Views: 1166
Downloads: 532
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Low-flow analysis of streamflows in Slovenia using R software and lfstat pack
Secondary abstract: Understanding and predicting low flows are among the most important tasks of effective water management. Due to the unfavourable distribution of rainfall throughout the year, drought and associated water scarcity have been a great problem also in Slovenia in recent years. For accurate and efficient analysis of low flows it is necessary to analyse several indices; furthermore the results of such analyses should be properly evaluated. In the article main low-flow indices are presented and calculated for 55 gauging stations in Slovenia. Among the presented indices are base flow index, some low-flow statistics such as mean annual minima of n days, mean, 70-, 90-, and 95-percentile flow; the seasonality index, seasonality ratio and recession analysis together with the recession constant. The R package lfstat was used for calculations and analyses. The results are presented both analytically and graphically and also correlation analysis was carried out to indicate the relationship among the calculated indices.
Secondary keywords: low flows;low flow indices;base flow index;hydrology;
URN: URN:NBN:SI
File type: application/pdf
Type (COBISS): Not categorized
Pages: str. 13-28
Volume: 27
Issue: ǂ[št.] ǂ46
Chronology: 2014
ID: 9150297