Hrvatske vode
 
Hidrološki aspekti pojave snijega u Hrvatskoj
Hydrological aspects of snow occurence in Croatia

Ognjen Bonacci1*, Tamara Dadić2, Lidija Tadić2

Sažetak/Abstract: 

Cilj rada je bio da se karakteristike snijega u Hrvatskoj povežu s hidrološkim procesima. Jedno je poglavlje posvećeno ulozi snijega u hidrologiji. Detaljno su analizirane sljedeće karakteristike snijega: 1.) Broj dana godišnje sa snježnim pokrivačem višim ili jednakim od 1 cm; 2.) Maksimalna godišnja visina snježnog pokrivača; 3.) Datumi početka i kraja pojave snježnog pokrivača. Analizirani su podatci izmjereni na sljedeće tri stanice (u zagradama su navedena razdoblja obuhvaćena analizom): 1.) Zagreb-Grič (1895./1896.-2009./2010.); 2.) Osijek (1899./1900.-2009./2010.); 3.) Zavižan (1954./1955.-2009./2010.). Analiziran je odnos temperature zraka tijekom hladnog dijela godine i broja dana sa snježnim pokrivačem višim ili jednakim od 1 cm. Definiran je odnos prosječnog broja dana sa snježnim pokrivačem godišnje višim ili jednakim od 1 cm i nadmorske visine u Hrvatskoj. Na osnovi podataka o karakteristikama snijega izmjerenih na 21 stanici u ravničarskom djelu sjeverne Hrvatske u razdoblju 2000.-2009. utvrđeno je da je snježni režim sličan na cijelom ravničarskom području sjeverne Hrvatske. Analize izvršene u ovom radu ukazale su da ne postoji statistički značajno smanjenje niti jedne od ispitivanih karakteristika snijega. Određeni trend snižavanja broja dana godišnje sa snježnim pokrivačem višim ili jednakim od 1 cm je uočen, ali on nije statistički značajan.

 

The aim of this paper was to identify the connection between snow characteristics and hydrological processes in Croatia. One chapter is dedicated to the role of snow in hydrology. The following snow characteristics were analyzed in detail: 1) Number of days per year with snow cover deeper than or equal to 1 cm; 2) maximum annual depth of snow cover; 3) dates of start and end of snow cover occurrence. The analyzed data were measured at the following three stations (periods covered by analysis are in brackets): 1) Zagreb-Grič (1895/1896-2009/2010); 2) Osijek (1899/1900-2009/2010); 3) Zavižan (1954/1955-2009/2010). The relation between air temperature during the cold part of the year and the number of days with snow cover deeper than or equal to 1 cm was analyzed. The relation between annual average number of days with snow cover deeper than or equal to 1 cm and altitude in Croatia was defined. Based snow characteristics data measured at 21 stations in the lowland part of northern Croatia in the period between 2000-2009, it was determined that snow regime is similar in the whole lowland part of northern Croatia. Analyses conducted in this paper showed no statistically significant reduction in any investigated snow characteristic. A trend of reduction in annual days with snow cover deeper than or equal to 1 cm has been observed, but is not statistically significant.

Kategorija: 
Prethodno priopćenje / Preliminary Report
Ključne riječi/Key words: 

trajanje snježnog pokrivača, maksimalna visina snježnosg pokrivača, temperatura zraka, hidrologija snijega, Hrvatska

snow cover, maximum snow cover depth, snow hydrology, Croatia

Podaci o autorima/Authors affiliations: 

1Fakultet građevinarstva, arhitekture i geodezije Sveučilišta u Splitu, Matice hrvatske 15, 21000 Split, obonacci@gradst.hr *

 

2Građevinski fakultet Sveučilišta J. J. Strossmayera u Osijeku, Crkvena 21, 31000 Osijek

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