Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia

Correlation and cross-spectral analysis of hydrographs was performed on the karst area of the mountainous section of the Kupa River in two time periods. Since there are karst aquifers in this area that is a part of strategic groundwater reserves of potable water, such an analysis could give better i...

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Main Authors: Krešimir Pavlić, Jelena Parlov
Format: Article
Language:English
Published: MDPI AG 2019-02-01
Series:Geosciences
Subjects:
Online Access:https://www.mdpi.com/2076-3263/9/2/86
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author Krešimir Pavlić
Jelena Parlov
author_facet Krešimir Pavlić
Jelena Parlov
author_sort Krešimir Pavlić
collection DOAJ
description Correlation and cross-spectral analysis of hydrographs was performed on the karst area of the mountainous section of the Kupa River in two time periods. Since there are karst aquifers in this area that is a part of strategic groundwater reserves of potable water, such an analysis could give better insight into the behavior of these aquifers. The functions used to describe karst aquifers are the cross-correlation function, coherence function, gain function, and phase function. The outcomes of the analysis results were very similar in the two analyzed periods, suggesting that differences in input signals between these two periods do not affect the aquifer function as a system filter. The results of this research suggest that the aquifer and overburden layer characteristics have a much stronger influence than the change of input signal on the runoff regime in the considered period.
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spelling doaj.art-e3c32f5d77144285973cb2e2d74a09722022-12-22T01:07:01ZengMDPI AGGeosciences2076-32632019-02-01928610.3390/geosciences9020086geosciences9020086Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of CroatiaKrešimir Pavlić0Jelena Parlov1Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000 Zagreb, CroatiaFaculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000 Zagreb, CroatiaCorrelation and cross-spectral analysis of hydrographs was performed on the karst area of the mountainous section of the Kupa River in two time periods. Since there are karst aquifers in this area that is a part of strategic groundwater reserves of potable water, such an analysis could give better insight into the behavior of these aquifers. The functions used to describe karst aquifers are the cross-correlation function, coherence function, gain function, and phase function. The outcomes of the analysis results were very similar in the two analyzed periods, suggesting that differences in input signals between these two periods do not affect the aquifer function as a system filter. The results of this research suggest that the aquifer and overburden layer characteristics have a much stronger influence than the change of input signal on the runoff regime in the considered period.https://www.mdpi.com/2076-3263/9/2/86Dinaric karsttime series analysisfrequency analysiscross-correlationcross-spectrum
spellingShingle Krešimir Pavlić
Jelena Parlov
Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
Geosciences
Dinaric karst
time series analysis
frequency analysis
cross-correlation
cross-spectrum
title Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
title_full Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
title_fullStr Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
title_full_unstemmed Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
title_short Cross-Correlation and Cross-Spectral Analysis of the Hydrographs in the Northern Part of the Dinaric Karst of Croatia
title_sort cross correlation and cross spectral analysis of the hydrographs in the northern part of the dinaric karst of croatia
topic Dinaric karst
time series analysis
frequency analysis
cross-correlation
cross-spectrum
url https://www.mdpi.com/2076-3263/9/2/86
work_keys_str_mv AT kresimirpavlic crosscorrelationandcrossspectralanalysisofthehydrographsinthenorthernpartofthedinarickarstofcroatia
AT jelenaparlov crosscorrelationandcrossspectralanalysisofthehydrographsinthenorthernpartofthedinarickarstofcroatia