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Natasa Ravbar

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Papers by Natasa Ravbar

Research paper thumbnail of A review of the potential and actual sources of pollution to groundwater in selected karst areas in Slovenia

Natural Hazards and Earth …, Jan 1, 2005

Research paper thumbnail of Integrating temporal hydrologic variations into karst groundwater vulnerability mapping–examples from Slovenia

8th Conference on Limestone …, 2006

... Integrating temporal hydrologic variations into karst groundwater vulnerability mapping - exa... more ... Integrating temporal hydrologic variations into karst groundwater vulnerability mapping - examples from Slovenia. Author: Ravbar, Nataša & Goldscheider, Nico: Group: zbornik; Publication: Pproceedings of the 8th conference on limestone hydrogeology; Location: Neuchatel; ...

Research paper thumbnail of EDITORIAL: RESEARCH FRONTIERS AND PRACTICAL CHALLENGES IN KARST HYDROGEOLOGY

Acta carsologica, 2010

That flattener is a cave passage, which though wide, is so low that movement is only possible in ... more That flattener is a cave passage, which though wide, is so low that movement is only possible in a prone position [10]. see also crawl.? ... KarstBase a bibliography database in karst and cave science. ... That donga is in the nullarbor plain, australia, a shallow, closed depression, ...

Research paper thumbnail of Anomalous behaviour of specific electrical conductivity at a karst spring induced by variable catchment boundaries: the case of the Podstenjšek spring, Slovenia

Hydrological Processes, 2011

Research paper thumbnail of Comparative application of four methods of groundwater vulnerability mapping in a Slovene karst catchment

Hydrogeology Journal, 2009

Research paper thumbnail of Mapping the vulnerability of groundwater to the contamination of four carbonate aquifers in Europe

Journal of Environmental Management, 2010

The vulnerability of four European aquifers with different hydrogeological and climatic character... more The vulnerability of four European aquifers with different hydrogeological and climatic characteristics was evaluated using the COP method. The results obtained were statistically analyzed by determination coefficients to measure which factor has greater importance in the vulnerability index. Furthermore, a new parameter has been designed to measure the vulnerability for the whole of the aquifer. The results demonstrate that COP is a useful method to assess the vulnerability of the test sites under consideration. The results obtained are coherent with the conceptual model of each pilot aquifer and the available hydrogeological information (hydrographs, isotopic data, tracer tests). Fissured carbonate aquifers (diffuse flow systems) are less vulnerable than karst aquifers (conduit flow systems) and the vulnerability index is more positively correlated with the O factor (unsaturated zone protection capacity) in the first case. The karst aquifers are more vulnerable than fissured aquifers and they show a higher correlation between the C factor (karst features) and the vulnerability index. Climatic variation (precipitation for example) influences the final vulnerability index of the aquifers according to the weight in the index and the spatial distribution.

Research paper thumbnail of Karstological study of the new Kunming airport building area (Yunnan, China)

Environmental Earth Sciences, 2011

Research paper thumbnail of Development challenges in karst regions: sustainable land use planning in the karst of Slovenia

Carbonates and Evaporites, 2011

Research paper thumbnail of Karst Phenomena Between Vipava and Selo

Cave and Karst Systems of the World, 2015

Research paper thumbnail of The Karst Between Lešnica and Kronovo, Revealed During the Motorway Construction

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Cave Sediments from the Infilled Cave Near Divača

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Unroofed Caves Provide Important Clues to the Karst Development

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Unroofed Caves Discovered on the Route Between Čebulovica and Dane

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Karst Formations Uncovered on the Ponikve–Hrastje Motorway Section

Cave and Karst Systems of the World, 2015

Research paper thumbnail of The Dolenjska Karst Area Uncovered on the Bič–Korenitka Motorway Section

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Palaeomagnetic Research of an Unroofed Cave Near Kozina

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Sediments in the S-647 Cave in the Kastelec Tunnel

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Impact of Motorways on Karst Waters

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Natural hazards in Slovene karst areas: Flood risk areas in the Upper Pivka valley

EGU General Assembly 2009, held 19- …, Jan 1, 2009

Abstract An overview of exceptional natural processes or natural hazards from the human perspecti... more Abstract An overview of exceptional natural processes or natural hazards from the human perspective in Slovene karst areas is made. Some types of natural hazards are typical for karst due to the process of karstification and resulting geomorphological and hydrological ...

Research paper thumbnail of Application of Methods for Resource and Source Vulnerability Mapping in the Orehek Karst Aquifer, SW Slovenia

J. Mudry et al. (eds.), H2Karst Research in Limestone Hydrogeology, Environmental Earth Sciences,

Abstract In a shallow karst aquifer in SW Slovenia assessment of groundwater and drinking water s... more Abstract In a shallow karst aquifer in SW Slovenia assessment of groundwater and drinking water source vulnerability has been performed using different methods. The small, but well defined, Orehek karst is mainly drained by the no longer exploited orentan spring. The recharge area of the spring is well karstified, densely wooded, and covered by thin soils. Besides precipitation, the pring is additionally recharged by temporally active sinking streams. To assess the vulnerability, two methods, COP+K and Slovene approach, have been applied. Both methods provide tools for assessing vulnerability in carbonate rocks. They both ank among very sophisticated methods that require vast amounts of data, time, and financial and technical resources. Both ethods share the same methodological procedure and consider the same type of information, categorized by the same factors. On the other hand, the scoring, classification and weighting of individual arameters between the methods are different. Consequently, the resulting maps differ significantly. Major differences between the results are identified and discussed.

Research paper thumbnail of A review of the potential and actual sources of pollution to groundwater in selected karst areas in Slovenia

Natural Hazards and Earth …, Jan 1, 2005

Research paper thumbnail of Integrating temporal hydrologic variations into karst groundwater vulnerability mapping–examples from Slovenia

8th Conference on Limestone …, 2006

... Integrating temporal hydrologic variations into karst groundwater vulnerability mapping - exa... more ... Integrating temporal hydrologic variations into karst groundwater vulnerability mapping - examples from Slovenia. Author: Ravbar, Nataša & Goldscheider, Nico: Group: zbornik; Publication: Pproceedings of the 8th conference on limestone hydrogeology; Location: Neuchatel; ...

Research paper thumbnail of EDITORIAL: RESEARCH FRONTIERS AND PRACTICAL CHALLENGES IN KARST HYDROGEOLOGY

Acta carsologica, 2010

That flattener is a cave passage, which though wide, is so low that movement is only possible in ... more That flattener is a cave passage, which though wide, is so low that movement is only possible in a prone position [10]. see also crawl.? ... KarstBase a bibliography database in karst and cave science. ... That donga is in the nullarbor plain, australia, a shallow, closed depression, ...

Research paper thumbnail of Anomalous behaviour of specific electrical conductivity at a karst spring induced by variable catchment boundaries: the case of the Podstenjšek spring, Slovenia

Hydrological Processes, 2011

Research paper thumbnail of Comparative application of four methods of groundwater vulnerability mapping in a Slovene karst catchment

Hydrogeology Journal, 2009

Research paper thumbnail of Mapping the vulnerability of groundwater to the contamination of four carbonate aquifers in Europe

Journal of Environmental Management, 2010

The vulnerability of four European aquifers with different hydrogeological and climatic character... more The vulnerability of four European aquifers with different hydrogeological and climatic characteristics was evaluated using the COP method. The results obtained were statistically analyzed by determination coefficients to measure which factor has greater importance in the vulnerability index. Furthermore, a new parameter has been designed to measure the vulnerability for the whole of the aquifer. The results demonstrate that COP is a useful method to assess the vulnerability of the test sites under consideration. The results obtained are coherent with the conceptual model of each pilot aquifer and the available hydrogeological information (hydrographs, isotopic data, tracer tests). Fissured carbonate aquifers (diffuse flow systems) are less vulnerable than karst aquifers (conduit flow systems) and the vulnerability index is more positively correlated with the O factor (unsaturated zone protection capacity) in the first case. The karst aquifers are more vulnerable than fissured aquifers and they show a higher correlation between the C factor (karst features) and the vulnerability index. Climatic variation (precipitation for example) influences the final vulnerability index of the aquifers according to the weight in the index and the spatial distribution.

Research paper thumbnail of Karstological study of the new Kunming airport building area (Yunnan, China)

Environmental Earth Sciences, 2011

Research paper thumbnail of Development challenges in karst regions: sustainable land use planning in the karst of Slovenia

Carbonates and Evaporites, 2011

Research paper thumbnail of Karst Phenomena Between Vipava and Selo

Cave and Karst Systems of the World, 2015

Research paper thumbnail of The Karst Between Lešnica and Kronovo, Revealed During the Motorway Construction

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Cave Sediments from the Infilled Cave Near Divača

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Unroofed Caves Provide Important Clues to the Karst Development

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Unroofed Caves Discovered on the Route Between Čebulovica and Dane

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Karst Formations Uncovered on the Ponikve–Hrastje Motorway Section

Cave and Karst Systems of the World, 2015

Research paper thumbnail of The Dolenjska Karst Area Uncovered on the Bič–Korenitka Motorway Section

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Palaeomagnetic Research of an Unroofed Cave Near Kozina

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Sediments in the S-647 Cave in the Kastelec Tunnel

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Impact of Motorways on Karst Waters

Cave and Karst Systems of the World, 2015

Research paper thumbnail of Natural hazards in Slovene karst areas: Flood risk areas in the Upper Pivka valley

EGU General Assembly 2009, held 19- …, Jan 1, 2009

Abstract An overview of exceptional natural processes or natural hazards from the human perspecti... more Abstract An overview of exceptional natural processes or natural hazards from the human perspective in Slovene karst areas is made. Some types of natural hazards are typical for karst due to the process of karstification and resulting geomorphological and hydrological ...

Research paper thumbnail of Application of Methods for Resource and Source Vulnerability Mapping in the Orehek Karst Aquifer, SW Slovenia

J. Mudry et al. (eds.), H2Karst Research in Limestone Hydrogeology, Environmental Earth Sciences,

Abstract In a shallow karst aquifer in SW Slovenia assessment of groundwater and drinking water s... more Abstract In a shallow karst aquifer in SW Slovenia assessment of groundwater and drinking water source vulnerability has been performed using different methods. The small, but well defined, Orehek karst is mainly drained by the no longer exploited orentan spring. The recharge area of the spring is well karstified, densely wooded, and covered by thin soils. Besides precipitation, the pring is additionally recharged by temporally active sinking streams. To assess the vulnerability, two methods, COP+K and Slovene approach, have been applied. Both methods provide tools for assessing vulnerability in carbonate rocks. They both ank among very sophisticated methods that require vast amounts of data, time, and financial and technical resources. Both ethods share the same methodological procedure and consider the same type of information, categorized by the same factors. On the other hand, the scoring, classification and weighting of individual arameters between the methods are different. Consequently, the resulting maps differ significantly. Major differences between the results are identified and discussed.

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