scholarly journals The relationship of the geological framework to the Quaternary aquifer system in the Sava River valley (Croatia)

2017 ◽  
Vol 70 (3) ◽  
pp. 201-213 ◽  
Author(s):  
Željka Brkić
2019 ◽  
Vol 98 ◽  
pp. 12017
Author(s):  
Jelena Parlov ◽  
Zoran Kovač ◽  
Jadranka Barešić

Water stable isotopes were used to investigate hydrological pathways and interactions between surface water and groundwater in the Zagreb aquifer system (Croatia). δ2H and δ18O values indicate a spatial variability of the influence of individual groundwater sources inside the aquifer – local precipitation and the Sava River water. Fractions of surface water in groundwater strongly depend on fluctuations of the river water level and less on the distance from the Sava River. These data extend our understanding of groundwater flow in the Zagreb aquifer system, interactions between Sava River water, local precipitation and groundwater. The results of the research allow more precise monitoring plans and definition of the sanitary protection zones of the well fields in the future.


Geosciences ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 92
Author(s):  
Uroš Barudžija ◽  
Josipa Velić ◽  
Tomislav Malvić ◽  
Neven Trenc ◽  
Nikolina Matovinović Božinović

Morphometric analysis of Holocene pebbles from Sava River gravel in NW Croatia revealed shape distributions as observed along a 30 km long watercourse. Limestones, dolomites, and sandstones were identified as the major (>4%) and effusive magmatics in this alluvial aquifer system in Zagreb, with cherts and tuffs as minor pebble lithologies (up to 4%). Their distributions mainly indicate distant Alpine provenance for carbonate pebbles (limestone and dolomite) and local input for sandstones and minor lithotypes, laterally from the Samoborska Gora and Medvednica mountain. Carbonates are predominantly disc- and sphere-shaped, implying distant sources. Scattered distributions of pebble shapes (sphere, disc, blade, and rod) for sandstones and minor lithotypes possibly indicate multiple sources, some of them probably local. The tentatively interpreted “original sedimentary environments” for the main pebble lithotypes (calculated from their flatness ratios) possibly indicate that they are predominantly lake beach pebbles, followed by moraine and riverbed pebbles. However, these results should be strongly questioned.


2004 ◽  
Vol 53 (1) ◽  
pp. 17-27 ◽  
Author(s):  
D. Petošić ◽  
L. Tadić ◽  
D. Romić ◽  
F. Tomić

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1562
Author(s):  
Hrvoje Meaški ◽  
Ranko Biondić ◽  
Jelena Loborec ◽  
Dijana Oskoruš

With its quantities of groundwater, the Zagreb aquifer is an irreplaceable water-supply resource that forms the basis of the water-supply of Zagreb, the capital and largest city of the Republic of Croatia. The depth of the Zagreb aquifer system is about 100 m at the deepest part, and the two main aquifers of the aquifer system can be separated vertically by low-permeable clay deposits. In the area of the Zagreb aquifer, there are several active and reserve public water-supply sites, the largest of which are Mala Mlaka and Petruševec. The groundwater level of the Zagreb aquifer is directly related to the water levels of the Sava River, so any erosive change in the Sava riverbed decreases the groundwater levels in the aquifer. In the last 50 years, the groundwater levels in the Zagreb aquifer have decreased significantly, being most pronounced in the area of the Mala Mlaka water-supply site. This has affected the normal functioning of the public water-supply because the suction baskets of the pumps in the dug wells at the Mala Mlaka water-supply site occasionally remain partially or completely in the unsaturated aquifer zone during low groundwater levels, which reduces capacity or prevents pumping from these water-supply facilities. Immediately next to the Mala Mlaka water-supply site is the Sava-Odra Canal, which was built to protect Zagreb from flooding and into which the Sava River flows when its flow rate exceeds 2350 m3/s. This reduces the flow rate of the Sava River near Zagreb and the possibility of flooding urban areas. To prevent problems with groundwater levels at the Mala Mlaka water-supply facilities and to enable normal water-supply, even in extremely dry periods, several variants of managed aquifer recharge (MAR) are proposed here. In order to determine the optimal solution for MAR and to enable the normal functioning of one of the main sites of water-supply in the Zagreb water-supply system. Groundwater flow for the period of 2006 to 2010 was simulated for six different variants of MAR. One assumes a constant potential in the Sava-Odra Canal, three are related to recharge from the Sava-Odra Canal with different backwater levels in the infiltration facility (elevations of 114, 114.5, and 115 m a.s.l.), and two with three absorption wells upstream of the Mala Mlaka water pumping station (injection of 300 L/s each and 500 L/s each). The most favorable method to recharge artificially the Zagreb aquifer near the Mala Mlaka pumping station is achieved with an infiltration facility using an elevation of 115 m a.s.l. The use of such a facility will enable the smooth operation of the water pumping station and the possibility of increasing the pumping quantities at the Mala Mlaka water pumping station for the future development of the area.


Author(s):  
Iryna Dukhniak

The results of the analysis of architectural and landscape interactions in the valley spaces of the rivers in Ukrainian Carpathians are presented in the article. The analysis was made at the scale level of elements of the architectural landscape. It was the next step after preliminary studies at the two highest scale levels - the level of settlement systems and at the level of settlements. The goal is to create a scientific basis for the methodical bases of the architectural and landscape arrangement of river valley spaces in Ukrainian Carpathians. Architectural and landscape interactions at a lowest scale level (level of an architectural landscape elements) are most clearly manifested in the aesthetic aspects. Elements of the architectural landscape are divided into natural and anthropogenic. The last ones were studied, which in turn are divided into urban elements, architectural objects and engineering structures. 30 elements were analyzed by functional-planning and aesthetic characteristics, of which 7 are presented in the article. It was revealed, that the large buildings, which visually dominate the relief, spoil aesthetics and identity of the valley landscape. When the traditional superficiality is exceeded, the feeling of the dominant influence of natural components on the local architectural environment is lost. The use of artificial finishing materials or too bright colors distorts the image and disintegrates the environment. It was established, that the best aesthetic effect in the relationship of architecture and landscape is achieved by applying traditional local styles in construction, in which there is an organic unity of nature and architecture through scale and form, as well as the use of natural materials in decoration.


Author(s):  
Uroš Barudžija ◽  
Josipa Velić ◽  
Tomislav Malvić ◽  
Neven Trenc ◽  
Nikolina Matovinović Božinović

Morphometric analysis of Holocene pebbles from the Sava River gravels, in Zagreb alluvial aquifer system (NW Croatia), revealed distribution of their shapes along 30 km long observed watercourse. Limestones, dolomites and sandstones are determined as major (> 4%), and effusive magmatics, cherts and tuffs as minor lithotypes of the pebbles (up to 4%). Their distributions indicate mainly distant Alpine provenance for carbonate (limestones and dolomites) pebbles and local input for sandstones and minor lithotypes, laterally from the Samoborska gora and Medvednica Mts. Carbonates have predominately disc and sphere shapes, implying also their mainly distant sources. Scattered distributions of pebble shapes (sphere, disc, blade and rod) for sandstones and minor lithotypes indicate multiple sources, some of them probably local. Original sedimentary environments for main pebble lithotypes are tentatively interpreted from their flatness ratios, indicating predominant lake shore environments, followed by moraine and riverbed.


Author(s):  
Elsbeth L. Dowd

In May-June of 2010, the University of Oklahoma and the Oklahoma Archeological Survey co-sponsored a field school at the Ramos Creek site (34MC1030) in southeastern Oklahoma. Ramos Creek is located in the Ouachita Mountains along the Mountain Fork, a tributary of the Little River. Recently identified by the U.S. Forest Service (USFS), this site is the northernmost known site with a Caddo component along this stream (Figure 1). The best-known Caddo sites identified for this drainage were tested during the Oklahoma River Basin Survey project of the 1960s and today are covered by the man-made Broken Bow Lake. Archaeological investigations along the Mountain Fork have been conducted by Wyckoff, Klinger and Cande, Perttula, and Perttula and Nelson. This past summer’s work at Ramos Creek is part of a broader research program addressing several questions: What was the relationship of Ramos Creek to sites further downstream, including the multimound Woods Mound Group? How were the Caddo sites in this drainage organized politically and what social dynamics shaped their history? Is there a better way of understanding the socio-political organization of these communities than applying models used in other parts of the Caddo area and the wider Southeast? How were these communities related to those living in other parts of the Caddo archaeological area, including the rest of the Ouachita Mountains, the Little River Valley, the Red River Valley, and the Arkansas Valley?


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