Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)

<div>High concentrations of sodium, potassium, nitrates and sulphates in</div><div>the groundwater in the Mala Mlaka well field catchment area confirm</div><div>the impact of agricultural activities on water chemistry. Analysis</div><div>of time trends has s...

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Main Authors: Zoran Nakić, Siniša Horvat, Andrea Bačani
Format: Article
Language:English
Published: Croatian Geological Survey 2005-06-01
Series:Geologia Croatica
Subjects:
Online Access:http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/200
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spelling doaj-7dcaacd97f13415f9bda9dd3e1d8be6c2020-11-25T01:27:47ZengCroatian Geological SurveyGeologia Croatica1330-030X1333-48752005-06-01581879910.4154/GC.2005.04115Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)Zoran Nakić0Siniša Horvat1Andrea Bačani2Faculty of Mining, Geology and Petroleum Engineering, University of ZagrebFaculty of Mining, Geology and Petroleum Engineering, University of ZagrebFaculty of Mining, Geology and Petroleum Engineering, University of Zagreb<div>High concentrations of sodium, potassium, nitrates and sulphates in</div><div>the groundwater in the Mala Mlaka well field catchment area confirm</div><div>the impact of agricultural activities on water chemistry. Analysis</div><div>of time trends has shown that a decrease in inorganic components</div><div>(nitrates and sulphates), which are sensitive to changes in oxidation/</div><div>reduction conditions in an aquifer, are caused by infiltration of oxygen-</div><div>rich water rich in organic matter into the aquifers. Oxygen content</div><div>reduction due to oxidation of the organic matter causes oxygen</div><div>deprivation in the groundwater and consequently a reduction in nitrate</div><div>and sulphate levels. An increase in chloride levels in the groundwater</div><div>during 1994&ndash;2000 is a consequence of human activities in the catchment</div><div>area. Multivariate statistical analyses, i.e. factor analysis, cluster</div><div>analysis and multidimensional scaling (MDS) analysis have shown</div><div>that the registered pollution sources in the catchment area, particularly</div><div>illegal dump sites, cause degradation of the groundwater quality in</div><div>some sites. This impact is detected over a distance of several hundred</div><div>metres downstream from the registered pollution sources.</div>http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/200Groundwater geochemistryGroundwater protectionStatistical analysesMala Mlaka well fieldZagrebCroatia
collection DOAJ
language English
format Article
sources DOAJ
author Zoran Nakić
Siniša Horvat
Andrea Bačani
spellingShingle Zoran Nakić
Siniša Horvat
Andrea Bačani
Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
Geologia Croatica
Groundwater geochemistry
Groundwater protection
Statistical analyses
Mala Mlaka well field
Zagreb
Croatia
author_facet Zoran Nakić
Siniša Horvat
Andrea Bačani
author_sort Zoran Nakić
title Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
title_short Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
title_full Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
title_fullStr Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
title_full_unstemmed Statistical Indicators of Groundwater Geochemical Characteristics in a Quaternary Aquifer from the Mala Mlaka Well Field Catchment Area (Zagreb, Croatia)
title_sort statistical indicators of groundwater geochemical characteristics in a quaternary aquifer from the mala mlaka well field catchment area (zagreb, croatia)
publisher Croatian Geological Survey
series Geologia Croatica
issn 1330-030X
1333-4875
publishDate 2005-06-01
description <div>High concentrations of sodium, potassium, nitrates and sulphates in</div><div>the groundwater in the Mala Mlaka well field catchment area confirm</div><div>the impact of agricultural activities on water chemistry. Analysis</div><div>of time trends has shown that a decrease in inorganic components</div><div>(nitrates and sulphates), which are sensitive to changes in oxidation/</div><div>reduction conditions in an aquifer, are caused by infiltration of oxygen-</div><div>rich water rich in organic matter into the aquifers. Oxygen content</div><div>reduction due to oxidation of the organic matter causes oxygen</div><div>deprivation in the groundwater and consequently a reduction in nitrate</div><div>and sulphate levels. An increase in chloride levels in the groundwater</div><div>during 1994&ndash;2000 is a consequence of human activities in the catchment</div><div>area. Multivariate statistical analyses, i.e. factor analysis, cluster</div><div>analysis and multidimensional scaling (MDS) analysis have shown</div><div>that the registered pollution sources in the catchment area, particularly</div><div>illegal dump sites, cause degradation of the groundwater quality in</div><div>some sites. This impact is detected over a distance of several hundred</div><div>metres downstream from the registered pollution sources.</div>
topic Groundwater geochemistry
Groundwater protection
Statistical analyses
Mala Mlaka well field
Zagreb
Croatia
url http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/200
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