Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)

The Radovna River Valley is located in the north-western part of Slovenia in the Julian Alps, where there is an extensive intergranular aquifer whose depth to pre-Quaternary bedrock is unknown. Therefore, to obtain information about the depth of the valley and the geometry of the aquif er t...

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Main Authors: Anja TORKAR, Marjana ZAJC, Jure ATANACKOV, Andrej GOSAR, Mihael BRENČIČ
Format: Article
Language:English
Published: Geological Survey of Slovenia 2021-12-01
Series:Geologija
Subjects:
Online Access:https://www.geologija-revija.si/index.php/geologija/article/view/1819/1884
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author Anja TORKAR
Marjana ZAJC
Jure ATANACKOV
Andrej GOSAR
Mihael BRENČIČ
author_facet Anja TORKAR
Marjana ZAJC
Jure ATANACKOV
Andrej GOSAR
Mihael BRENČIČ
author_sort Anja TORKAR
collection DOAJ
description The Radovna River Valley is located in the north-western part of Slovenia in the Julian Alps, where there is an extensive intergranular aquifer whose depth to pre-Quaternary bedrock is unknown. Therefore, to obtain information about the depth of the valley and the geometry of the aquif er two geophysical methods were used in our study; ground penetrating radar (GPR) and seismic reflection method. The low-frequency GPR method has shown to be useful for determining the depth of the groundwater and the predominant groundwater recharge. Also, the high-resolution seismic method provided an insight about the morphology of the pre-Quaternary basement with the deepest point at 141 meters below surface. Measurements of hydrogeological parameters such as groundwater level and river discharge measurements were carried out in the study area. Both data analyses showed that groundwater level and river discharge are highly fluctuatingand rapidly changing, indicating a well-permeable aquifer, implying that such an aquifer is extremely sensitive and vulnerable to extreme climate events. Both the geophysical methods and the hydrogeological information have provided important information about the morphology of the valley and the alluvial aquifer, as well as increasing the knowledge about the Radovna springs system, which will contribute very important information for future hydrogeological studies.
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spelling doaj.art-d3199151c204452a8a3e0101f50d95592023-01-23T08:10:18ZengGeological Survey of SloveniaGeologija0016-77891854-620X2021-12-0164225326610.5474/geologija.2021.014Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)Anja TORKARMarjana ZAJCJure ATANACKOVAndrej GOSARMihael BRENČIČThe Radovna River Valley is located in the north-western part of Slovenia in the Julian Alps, where there is an extensive intergranular aquifer whose depth to pre-Quaternary bedrock is unknown. Therefore, to obtain information about the depth of the valley and the geometry of the aquif er two geophysical methods were used in our study; ground penetrating radar (GPR) and seismic reflection method. The low-frequency GPR method has shown to be useful for determining the depth of the groundwater and the predominant groundwater recharge. Also, the high-resolution seismic method provided an insight about the morphology of the pre-Quaternary basement with the deepest point at 141 meters below surface. Measurements of hydrogeological parameters such as groundwater level and river discharge measurements were carried out in the study area. Both data analyses showed that groundwater level and river discharge are highly fluctuatingand rapidly changing, indicating a well-permeable aquifer, implying that such an aquifer is extremely sensitive and vulnerable to extreme climate events. Both the geophysical methods and the hydrogeological information have provided important information about the morphology of the valley and the alluvial aquifer, as well as increasing the knowledge about the Radovna springs system, which will contribute very important information for future hydrogeological studies.https://www.geologija-revija.si/index.php/geologija/article/view/1819/1884ground penetrating radarseismic reflection methodradovna springhydrogeologyaquifer geometryglacial valleygroundwater table
spellingShingle Anja TORKAR
Marjana ZAJC
Jure ATANACKOV
Andrej GOSAR
Mihael BRENČIČ
Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
Geologija
ground penetrating radar
seismic reflection method
radovna spring
hydrogeology
aquifer geometry
glacial valley
groundwater table
title Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
title_full Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
title_fullStr Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
title_full_unstemmed Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
title_short Geophysical investigations in the Radovna River Spring area (Julian Alps, NW Slovenia)
title_sort geophysical investigations in the radovna river spring area julian alps nw slovenia
topic ground penetrating radar
seismic reflection method
radovna spring
hydrogeology
aquifer geometry
glacial valley
groundwater table
url https://www.geologija-revija.si/index.php/geologija/article/view/1819/1884
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