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Publisher: Slovenian Academy Of Sciences and Arts (Total: 2 journals) [Sort alphabetically]

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	Slovenske divadlo / The Slovak Theatre
	Acta Carsologica (SJR: 0.384, CiteScore: 1)

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Acta Carsologica
Journal Prestige (SJR): 0.384

Citation Impact (citeScore): 1
Number of Followers: 0

This is an Open Access Journal

Open Access journal
ISSN (Print) 0583-6050
Published by Slovenian Academy Of Sciences and Arts

[2 journals]

Micro-karstification in a stalagmite, Küpeli Cave, southern Turkey
- Authors: Muhsin Eren, Muhammetmyrat Palvanov, Selahattin Kadir, Selim Kapur
  Abstract: This article deals with micro-karstification forming abundant dissolution features in a stalagmite from Küpeli Cave in southern Turkey. Dissolution occurs when cave water enriched with CO2 from the atmosphere and soil seeps into the stalagmite. Water is transmitted from the surface of the stalagmite to the interior by the roughly vertical or diagonal notch-shaped pores formed by the enlargement of intercrystalline pores by dissolution. These slightly elongated pores appear embedded in different parts of the stalagmite and characterize different stages of dissolution during the stalagmite formation. Later, when this water reaches the relatively more permeable growth layer surfaces, it flows along these surfaces, and diffuse dissolution features form. These features include micro-scale pitted and etched surface structures, rounded and enlarged crystal boundaries and intercrystalline pores, and the breakdown of relatively large crystals into small crystals (micritization). When the percolating water is sufficiently saturated with calcium carbonate in the stalagmite, secondary calcite precipitation occurs as rim and pore-filling cements within the pores formed as a result of dissolution. In general, dissolution and calcite re-precipitation as cement are early diagenetic events and occur at different stages of stalagmite development due to seasonal variation in CO2 and CaCO3 contents of the water in the epikarst zone and within the stalagmite. These conditions were probably provided during the wet season.
  PubDate: 2023-02-16
  DOI: 10.3986/ac.v51i2.10589
  Issue No: Vol. 51, No. 2 (2023)
Active and Relict Contact Karst morphological forms of the corrosional
plain (Slavinski ravnik, SW Slovenia)
- Authors: Astrid Švara, Andrej Mihevc, Nadja Zupan Hajna
  Abstract: So far, the longest known unroofed cave in Slovenia has been found on the Slavinski ravnik, southwest of Postojna. From its position on the surface, its shape, and its containing sediments, we can infer its spatial and temporal development, as well as the processes and evolution of the contact karst in its hinterland. The corrosional plain Slavinski ravnik is a small area of the Dinaric Karst in Slovenia, located at the contact between impermeable flysch and karstified carbonate rocks, where many contact karst features formed. Due to erosion, multi-phase regional tectonic uplift, and sedimentation, a paragenetic cave system, active and relict blind valleys have formed. During the geomorphological mapping, elements were examined and drawn using ESRI ArcMap and Golden Software Surfer, and the stages of their formation were observed. During the survey, the active cave system Markov spodmol and Vodna jama v Lozi, the relict unroofed cave Brezstropa jama v Lozi, Biščevci blind valley, Sajevško polje blind valley, Ivačevci blind valley, and Sajevško polje sediment accumulation were studied. The changing hydrological regime, the allogenic sediments, the distribution of active and relict ponors, and the placement of active and relict elements of these contact karst forms, show different stages of formation and subsequent development of the northern border of Slavinski ravnik. The geomorphological map of these contact karst features and their following studies give us an insight into the morphogenesis of the southern karst periphery of the Postojna Basin as an exceptional - relatively small but highly variable Slovenian contact karst site.
  PubDate: 2023-02-16
  DOI: 10.3986/ac.v51i2.10788
  Issue No: Vol. 51, No. 2 (2023)
Deciphering the water balance of poljes: example of Planinsko Polje
(Slovenia)
- Authors: Cyril Mayaud, Blaž Kogovšek, Franci Gabrovšek, Matej Blatnik, Metka Petrič, Nataša Ravbar
  Abstract: Poljes are flat closed karst depressions prone to regular flooding. The floods can be several meters high, last for months and damage significantly human infrastructures. To predict the maximum level reached, the polje water balance needs to be implemented. This technique encounters the difficulty that important part of the inflow and outflow flowing through many poljes is ungauged, as it is challenging to measure accurately the numerous springs and ponors activating temporarily with the rise of water level. This work aims to see whether this problem can be handled and the polje water balance reconstituted. To do so, a typical Dinaric polje is equipped with several water level stations installed over its surface and in the nearby water active caves. Combining a 1*1m digital elevation model of the polje surface with water levels and inflow records of the main two springs allowed assessing the variation of flooded volume and reconstructing the water balance. The highest total inflow values reached during the observed period were of about 140-150 m3/s, with up to a third of it being ungauged. In addition, the effect of a large estavelles group on the polje inflow and outflow could be identified, and helped to characterize the outflow, with values comprised between 65 and 75 m3/s. Finally, intense rainfall over the polje flooded surface showed to be a temporary important source of inflow. The values found by the water balance analysis have been used as input and calibration data in a numerical model reproducing the flood dynamics in the polje and its surrounding aquifer. Results validated both polje water balance and conceptual hydrogeological model. They justify the significance of combining water level measurements with a digital elevation model to monitor the floods. The method can be applied to other poljes flooding in a complex way of superposed input and output signals. Finally, the places to be equipped in priority if the polje has no measurement network or if available funding is limited are discussed.
  PubDate: 2023-02-16
  DOI: 10.3986/ac.v51i2.11029
  Issue No: Vol. 51, No. 2 (2023)
Karst hydrology of the Croatian coast recorded in the works of Alberto
Fortis (1741-1803)
- Authors: Robert Lončarić, Maša Surić
  Abstract: Alberto Fortis (1741-1803) was an Italian naturalist who had a wide range of scientific interests from linguistics and ethnology to geology, geography and hydrology. This paper presents an overview of hydrological features that Fortis recorded in two of his works: Saggio d'Osservazzioni sopra l'Isola di Cherso ed Osero (1771) and Viaggio in Dalmazia (1774). These works were a result of several Fortis' travels in the region and were noted in European scientific literature of that time. Fortis revealed to European public the eastern Adriatic coast, a then little-known part of Europe with its wide variety of natural features. Despite the scarce appearance of surface water in karst, numerous interpretations of hydrological features can be found in Fortis’ descriptions of the East Adriatic coast. He often shows a remarkable understanding of karst hydrology even though some of his ideas and explanations are dubious from the present point of view. Although Fortis is not considered a karstologist in the strict sense, his works contain elements of what will eventually become karstology.
  PubDate: 2023-02-16
  DOI: 10.3986/ac.v51i2.10999
  Issue No: Vol. 51, No. 2 (2023)