Digital repository of Slovenian research organisations

Show document
A+ | A- | Help | SLO | ENG

Title:Groundwater tracer tests as a supporting method for interpreting the complex hydrogeological environment of the Urbas landslide in NW Slovenia
Authors:ID Serianz, Luka (Author)
ID Janža, Mitja (Author)
Files:.pdf PDF - Presentation file, download (5,43 MB)
MD5: EB3793C20DD763D47E0D96C9D40859E1
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo GeoZS - Geological Survey of Slovenia
Abstract:This study investigates groundwater flow patterns in a landslide area above the settlement of Koroška Bela in NW Slovenia using a series of tracer tests with sodium chloride (NaCl) and fluorescein (uranine). The tracer experiments, using a combination of pumping tests and continuous groundwater observations, reveal two distinct groundwater flow horizons within the landslide body: a prevailing shallower flow within highly permeable gravel layers and a slower deep flow in the weathered low-permeability clastic layers. Uranine injections suggest longer retentions, indicating complex hydrogeological conditions. Groundwater is recharged by the infiltration of precipitation and subsurface inflow from the upper-lying carbonate rocks. In the upper landslide, highly permeable gravel layers accelerate flow, especially during heavy rainfall, while downstream interactions between permeable gravel and less permeable clastic materials create local aquifers and springs. These groundwater dynamics significantly influence landslide stability, as rapid infiltration during intense precipitation events can lead to transient increases in pore water pressure, reducing shear strength and potentially triggering slope movement. Meanwhile, slow deep flows contribute to prolonged saturation of critical failure surfaces, which may weaken the landslide structure over time. The study emphasizes the region’s geological heterogeneity and landslide stability, providing valuable insights into the groundwater dynamics of this challenging environment. By integrating hydrogeological assessments with engineering measures, the study provides supportive information for mitigating landslide risks and improving groundwater management strategies.
Keywords:groundwater, tracer, landslide, Carboniferous, Permian, clastic rocks
Publication status:Published
Publication version:Version of Record
Publication date:03.03.2025
Year of publishing:2025
Number of pages:17 str.
Numbering:vol. 15, no. 5
PID:20.500.12556/DiRROS-21834 New window
UDC:556.3
ISSN on article:2076-3417
DOI:10.3390/app15052707 New window
COBISS.SI-ID:228596227 New window
Note:
Publication date in DiRROS:08.04.2025
Views:115
Downloads:30
Metadata:XML DC-XML DC-RDF
:
SERIANZ, Luka and JANŽA, Mitja, 2025, Groundwater tracer tests as a supporting method for interpreting the complex hydrogeological environment of the Urbas landslide in NW Slovenia. Applied sciences [online]. 2025. Vol. 15, no. 5. [Accessed 20 April 2025]. DOI 10.3390/app15052707. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=21834
Copy citation
  
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:Applied sciences
Shortened title:Appl. sci.
Publisher:MDPI
ISSN:2076-3417
COBISS.SI-ID:522979353 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:Z1-50031-2023
Name:Dinamika regionalnega toka podzemne vode v alpskih karbonatnih vodonosnikih: mehanizmi, robni pogoji in vpliv podnembnih sprememb
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0020-2020
Name:Podzemne vode in geokemija

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.

Back