Long-range properties and data validity for hydrogeological time series: The case of the Paglia river
This paper explores a large collection of about 377,000 observations, spanning more than 20 years with a frequency of 30 min, of the streamflow of the Paglia river, in central Italy. We analyze the long-term persistence properties of the series by computing the Hurst exponent, not only in its origin...
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ftleicesterunfig:oai:figshare.com:article/10224410 2023-05-15T17:35:23+02:00 Long-range properties and data validity for hydrogeological time series: The case of the Paglia river Marcel Ausloos Roy Cerqueti Claudio Lupi 2016-12-02T00:00:00Z https://figshare.com/articles/journal_contribution/Long-range_properties_and_data_validity_for_hydrogeological_time_series_The_case_of_the_Paglia_river/10224410 unknown 2381/39632 https://figshare.com/articles/journal_contribution/Long-range_properties_and_data_validity_for_hydrogeological_time_series_The_case_of_the_Paglia_river/10224410 All Rights Reserved Uncategorized Science & Technology Physical Sciences Physics Multidisciplinary River streamflow Hurst exponent Benford's law Detrended fluctuation analysis Discrete generalized Beta distribution BENFORDS LAW MULTIFRACTAL ANALYSIS BREAKDOWN AVERAGES FLOWS Text Journal contribution 2016 ftleicesterunfig 2021-11-11T19:35:55Z This paper explores a large collection of about 377,000 observations, spanning more than 20 years with a frequency of 30 min, of the streamflow of the Paglia river, in central Italy. We analyze the long-term persistence properties of the series by computing the Hurst exponent, not only in its original form but also under an evolutionary point of view by analyzing the Hurst exponents over a rolling windows basis. The methodological tool adopted for the persistence is the detrended fluctuation analysis (DFA), which is classically known as suitable for our purpose. As an ancillary exploration, we implement a control on the data validity by assessing if the data exhibit the regularity stated by Benford’s law. Results are interesting under different viewpoints. First, we show that the Paglia river streamflow exhibits periodicities which broadly suggest the existence of some common behavior with El Niño and the North Atlantic Oscillations: this specifically points to a (not necessarily direct) effect of these oceanic phenomena on the hydrogeological equilibria of very far geographical zones: however, such an hypothesis needs further analyses to be validated. Second, the series of streamflows shows an antipersistent behavior. Third, data are not consistent with Benford’s law: this suggests that the measurement criteria should be opportunely revised. Fourth, the streamflow distribution is well approximated by a discrete generalized Beta distribution: this is well in accordance with the measured streamflows being the outcome of a complex system. Other Non-Article Part of Journal/Newspaper North Atlantic University of Leicester: Figshare |
institution |
Open Polar |
collection |
University of Leicester: Figshare |
op_collection_id |
ftleicesterunfig |
language |
unknown |
topic |
Uncategorized Science & Technology Physical Sciences Physics Multidisciplinary River streamflow Hurst exponent Benford's law Detrended fluctuation analysis Discrete generalized Beta distribution BENFORDS LAW MULTIFRACTAL ANALYSIS BREAKDOWN AVERAGES FLOWS |
spellingShingle |
Uncategorized Science & Technology Physical Sciences Physics Multidisciplinary River streamflow Hurst exponent Benford's law Detrended fluctuation analysis Discrete generalized Beta distribution BENFORDS LAW MULTIFRACTAL ANALYSIS BREAKDOWN AVERAGES FLOWS Marcel Ausloos Roy Cerqueti Claudio Lupi Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
topic_facet |
Uncategorized Science & Technology Physical Sciences Physics Multidisciplinary River streamflow Hurst exponent Benford's law Detrended fluctuation analysis Discrete generalized Beta distribution BENFORDS LAW MULTIFRACTAL ANALYSIS BREAKDOWN AVERAGES FLOWS |
description |
This paper explores a large collection of about 377,000 observations, spanning more than 20 years with a frequency of 30 min, of the streamflow of the Paglia river, in central Italy. We analyze the long-term persistence properties of the series by computing the Hurst exponent, not only in its original form but also under an evolutionary point of view by analyzing the Hurst exponents over a rolling windows basis. The methodological tool adopted for the persistence is the detrended fluctuation analysis (DFA), which is classically known as suitable for our purpose. As an ancillary exploration, we implement a control on the data validity by assessing if the data exhibit the regularity stated by Benford’s law. Results are interesting under different viewpoints. First, we show that the Paglia river streamflow exhibits periodicities which broadly suggest the existence of some common behavior with El Niño and the North Atlantic Oscillations: this specifically points to a (not necessarily direct) effect of these oceanic phenomena on the hydrogeological equilibria of very far geographical zones: however, such an hypothesis needs further analyses to be validated. Second, the series of streamflows shows an antipersistent behavior. Third, data are not consistent with Benford’s law: this suggests that the measurement criteria should be opportunely revised. Fourth, the streamflow distribution is well approximated by a discrete generalized Beta distribution: this is well in accordance with the measured streamflows being the outcome of a complex system. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Marcel Ausloos Roy Cerqueti Claudio Lupi |
author_facet |
Marcel Ausloos Roy Cerqueti Claudio Lupi |
author_sort |
Marcel Ausloos |
title |
Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
title_short |
Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
title_full |
Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
title_fullStr |
Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
title_full_unstemmed |
Long-range properties and data validity for hydrogeological time series: The case of the Paglia river |
title_sort |
long-range properties and data validity for hydrogeological time series: the case of the paglia river |
publishDate |
2016 |
url |
https://figshare.com/articles/journal_contribution/Long-range_properties_and_data_validity_for_hydrogeological_time_series_The_case_of_the_Paglia_river/10224410 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
2381/39632 https://figshare.com/articles/journal_contribution/Long-range_properties_and_data_validity_for_hydrogeological_time_series_The_case_of_the_Paglia_river/10224410 |
op_rights |
All Rights Reserved |
_version_ |
1766134527147638784 |