20.500.12556/RUL-83434 Analiza nizkih pretokov vodotokov v Sloveniji z uporabo programa R in paketa lfstat low-flow analysis of streamflows in Slovenia using R software and lfstat pack 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. 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. nizki pretoki kazalniki bazni pretoki hidrologija low flows low flow indices base flow index hydrology true false false Univerza v Ljubljani, Fakulteta za gradbeništvo in geodezijo Slovenski jezik Angleški jezik Delo ni kategorizirano 2016-06-13 02:54:41 2016-06-14 08:13:53 2022-11-29 10:14:31 0000-00-00 00:00:00 2014 0 0 Str. 13-28 št. 46 Letn. 27 2014 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.2:532.533(497.4) 1581-0267 7125089 1838689 analiza_niskih_pretokov_k.pdf analiza_niskih_pretokov_k.pdf 1 527B9E43B1240DF991D95B568D312F10 7e90f840fe0e75081c1f13f2a404334ff5e023bc2e44a9a25130aba3bd9b6c19 47559124-a1ae-11eb-a523-00155dcfd717 20.500.12556/rul/1bf4ed91-002e-4394-8e18-4c052c63805c https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=86473 https://actahydrotechnica.fgg.uni-lj.si/si/paper/a46mp 0 1707dcb7-6fc6-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164324 Fakulteta za gradbeništvo in geodezijo 0 0 0