Analysis of karst surface anisotropy using directional semivariograms, Slovenia

Verbovšek, Timotej (author)

The paper presents a study of the anisotropic properties of the karst surface through the use of semivariograms. Karst is formed by hydrogeological and tectonic deformations that determine the surface and subsurface characteristics of the area. Among the most prominent surface features are dolines, which generally form in a linear direction. Semivariograms can be used to determine both the preferred direction of anisotropy and the degree of anisotropy. The surface exhibits the greatest elevation variability in the direction of the most diverse terrain, corresponding to dolines. The results, based on the eight karst areas studied, show that it is possible to detect and, more importantly, quantify anisotropy in all karst areas, although in some cases it is impossible or difficult to detect visually. The directions of the semivariograms agree very well with those obtained from the visual inspection of the maps, as well as with the orientations of the main faults. The method is therefore very useful for quantitative determination of anisotropy and its interpretation could be greatly improved by using the detailed structural geological maps of the karst.

• Language: English
• Keywords: karst, dolines, anisotropy, semivariogram, surface variability, Slovenia
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 233-245
• Numbering: Vol. 181, iss. 1
• PID: 20.500.12556/RUL-156135
• UDC: 55
• ISSN on article: 0033-4553
• DOI: 10.1007/s00024-023-03411-x
• COBISS.SI-ID: 180385027
• Publication date in RUL: 10.05.2024

Record is a part of a journal

• Title: Pure and applied geophysics
• Shortened title: Pure appl. geophys.
• Publisher: Springer Nature, Birkhäuser
• ISSN: 0033-4553
• COBISS.SI-ID: 26087936

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P1-0195
• Name: Geookolje in geomateriali