Hrvatske vode, Vol. 33 No. 133-134, 2025.
Prethodno priopćenje
A comparison of temperature regimes of the Jadro and Ombla springs: implications for groundwater and aquifer structure dynamics
Ognjen Bonacci
; Sveučilište u Splitu, Fakultet građevinarstva, arhitekture i geodezije, Split, Hrvatska
*
Tanja Roje-Bonacci
; Sveučilište u Splitu, Fakultet građevinarstva, arhitekture i geodezije, Split, Hrvatska
* Dopisni autor.
Sažetak
The paper addresses a comparative analysis of water temperature variations of two highest yielding karst springs in Croatia, the Jadro and the Ombla, with the objective to determine their similarities and differences and explain the causes of these phenomena. The analysis is based on continuous measurements of water temperature in the 2013–2021 period. The statistical methods, such as linear regression and autocorrelation have been applied. The results show nearly identical average multiannual water temperatures in both springs, which indicates similar base climate conditions in the greater area of the Dinaric karst. However, a significant difference in the range and variability of water temperatures have been determined. The Ombla shows higher oscillations and a stronger impact of the air temperature, whereas the Jadro has lower amplitudes. A seasonal character of water temperature changes in both springs has been observed, although with a time shift regarding air temperatures, particularly with respect to the occurrences of maximum and minimum values. The similarities between the springs are derived from their association with the same karst system and a similar climate regime, while the differences are consequential to different structures of the karst aquifers, circulation depth of groundwater and mixing intensity of water with different origins. The fact that water temperature acts as a natural tracer that integrates the impacts of surface and subsurface processes is particularly emphasized.
Ključne riječi
water temperature; air temperature; Ombla spring; Jadro spring
Hrčak ID:
352101
URI
Datum izdavanja:
5.1.2026.
Posjeta: 0 *