Infiltration measurements during dry conditions in an urban park in Ljubljana, Slovenia

Svetina, Janja (author), Prestor, Joerg (author), Šraj, Mojca (author)

A thorough understanding of the hydrologic mechanisms that control the movement of water through the soil is essential for developing effective stormwater management strategies. Infiltration is critical for determining the amount of water entering the soil and controlling surface runoff. Spatial and temporal variations in soil properties strongly affect infiltration rates, which underscores the importance of evaluating field-specific values for hydraulic conductivity, which are also highly dependent on the chosen measurement and evaluation methods. The objective of this study is to determine and compare soil hydraulic conductivity under dry conditions using two field measurement techniques, namely the double-ring infiltrometer (DRI) and the mini-disk infiltrometer (MDI). The results demonstrate the importance of performing multiple replicates of infiltration tests, especially during the dry season, as the initial dry surface caused deviations in hydraulic conductivity estimates for both methods used (DRI and MDI). Significant spatial variability was observed within the radius of the test replicates over short distances (<1 m). In addition, experimental infiltration curves for a selected site were used to evaluate and compare soil hydraulic parameters through infiltration modeling. In general, the Philip, Green-Ampt, and Smith-Parlange theoretical models showed a better fit to the experimental DRI data than the semi-empirical Horton model.

• Language: English
• Keywords: hydraulic conductivity, double-ring infiltrometer, mini-disk infiltrometer, infiltration modeling, soil hydraulic parameters
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Year: 2023
• Number of pages: 16 str.
• Numbering: Vol. 15, no. 20, art. 3635
• PID: 20.500.12556/RUL-151756
• UDC: 556.3
• ISSN on article: 2073-4441
• DOI: 10.3390/w15203635
• COBISS.SI-ID: 168840963
• Publication date in RUL: 19.10.2023

Record is a part of a journal

• Title: Water
• Shortened title: Water
• Publisher: Molecular Diversity Preservation International - MDPI
• ISSN: 2073-4441
• COBISS.SI-ID: 36731653

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.

Secondary language

• Language: Slovenian
• Keywords: podzemna voda, meteorna voda, infiltracija, hidravlična prevodnost, hidravlični parametri zemljine, infiltrometer z dvojnim obročem, mini-disk infiltrometer, infiltracijski modeli