Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs

The Malenščica and Unica karst springs on the southern edge of Planinsko Polje are recharged from a complex karst system that is characterised by interchange between surface and subsurface flw. For periods of two hydrological years from 2007 to 2009 and one hydrological year from 2013 to 2014, sel...

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Main Author: Metka Petrič
Format: Article
Language:English
Published: Geological Survey of Slovenia 2017-12-01
Series:Geologija
Subjects:
Online Access:http://www.geologija-revija.si/dokument.aspx?id=1311
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author Metka Petrič
author_facet Metka Petrič
author_sort Metka Petrič
collection DOAJ
description The Malenščica and Unica karst springs on the southern edge of Planinsko Polje are recharged from a complex karst system that is characterised by interchange between surface and subsurface flw. For periods of two hydrological years from 2007 to 2009 and one hydrological year from 2013 to 2014, selected physical properties of water (precipitation, water level and discharge, temperature, electrical conductivity - EC) were measured at various sites of the system. Time series data were elaborated using various methods. First, the characteristic values of measured parameters were compared, then an alternative method was employed to evaluate the measurement results using the frequency distribution diagram of long-term EC data sets. The temporal variations of EC in various hydrological conditions were analysed and apparent groundwater flw velocities were assessed on the basis of the time lags between the peaks (maximums) or troughs (minimums) of the EC curves of the sinking streams and springs. The aim of the study was to understand the relationships between different parts of the recharge area and their changing contributions to the springs in various hydrological conditions. The results, which were validated by the fidings of previous tracer tests using artifiial tracers, indicate that the use of selected natural tracers provides a comprehensive understanding of the functioning of karst aquifers.
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spelling doaj.art-8d083745d51c40119de139256e07914e2023-01-23T08:10:15ZengGeological Survey of SloveniaGeologija0016-77891854-620X2017-12-0160221122110.5474/geologija.2017.015Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springsMetka PetričThe Malenščica and Unica karst springs on the southern edge of Planinsko Polje are recharged from a complex karst system that is characterised by interchange between surface and subsurface flw. For periods of two hydrological years from 2007 to 2009 and one hydrological year from 2013 to 2014, selected physical properties of water (precipitation, water level and discharge, temperature, electrical conductivity - EC) were measured at various sites of the system. Time series data were elaborated using various methods. First, the characteristic values of measured parameters were compared, then an alternative method was employed to evaluate the measurement results using the frequency distribution diagram of long-term EC data sets. The temporal variations of EC in various hydrological conditions were analysed and apparent groundwater flw velocities were assessed on the basis of the time lags between the peaks (maximums) or troughs (minimums) of the EC curves of the sinking streams and springs. The aim of the study was to understand the relationships between different parts of the recharge area and their changing contributions to the springs in various hydrological conditions. The results, which were validated by the fidings of previous tracer tests using artifiial tracers, indicate that the use of selected natural tracers provides a comprehensive understanding of the functioning of karst aquifers.http://www.geologija-revija.si/dokument.aspx?id=1311karst aquifernatural and artifiial tracersMalenščicaUnicaSlovenia
spellingShingle Metka Petrič
Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
Geologija
karst aquifer
natural and artifiial tracers
Malenščica
Unica
Slovenia
title Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
title_full Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
title_fullStr Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
title_full_unstemmed Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
title_short Flow dynamics in a karst aquifer studied by means of natural and artifiial tracers: a case study of the Malenščica and Unica karst springs
title_sort flow dynamics in a karst aquifer studied by means of natural and artifiial tracers a case study of the malenscica and unica karst springs
topic karst aquifer
natural and artifiial tracers
Malenščica
Unica
Slovenia
url http://www.geologija-revija.si/dokument.aspx?id=1311
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