Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability
The social, economic, and ecological importance of the aquifer system within the Bacchiglione basin (Veneto, IT) is noteworthy, and there is considerable disagreement among previous studies over its sustainable use. Investigating the long-term quantitative sustainability of the groundwater system, t...
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2021-03-01
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| Series: | Acque Sotterranee |
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| Online Access: | https://www.acquesotterranee.net/index.php/acque/article/view/499 |
| _version_ | 1818875896112611328 |
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| author | Mara Meggiorin Giulia Passadore Silvia Bertoldo Andrea Sottani Andrea Rinaldo |
| author_facet | Mara Meggiorin Giulia Passadore Silvia Bertoldo Andrea Sottani Andrea Rinaldo |
| author_sort | Mara Meggiorin |
| collection | DOAJ |
| description | The social, economic, and ecological importance of the aquifer system within the Bacchiglione basin (Veneto, IT) is noteworthy, and there is considerable disagreement among previous studies over its sustainable use. Investigating the long-term quantitative sustainability of the groundwater system, this study presents a statistical methodology that can be applied to similar cases. Using a combination of robust and widely used techniques, we apply the seasonal Mann–Kendall test and the Sen’s slope estimator to the recorded groundwater level timeseries. The analysis is carried out on a large and heterogeneous proprietary dataset gathering hourly groundwater level timeseries at 79 control points, acquired during the period 2005–2019. The test identifies significant decreasing trends for most of the available records, unlike previous studies on the quantitative status of the same resource which covered the domain investigated here for a slightly different period: 2000–2014. The present study questions the reason for such diverging results by focusing on the method’s accuracy. After carrying out a Fourier analysis on the longest available timeseries, for studies of groundwater status assessment this work suggests applying the Mann–Kendall test to timeseries longer than 20 years (because otherwise the analysis would be affected by interannual periodicities of the water cycle). A further analysis of two 60-year-long monthly timeseries between 1960 and 2020 supports the actual sustainable use of the groundwater resource, the past deployment of the groundwater resources notwithstanding. Results thus prove more reliable, and meaningful inferences on the longterm sustainability of the groundwater system are possible. |
| first_indexed | 2024-12-19T13:33:46Z |
| format | Article |
| id | doaj.art-c8cb0625e14940549bf9d23dafff253d |
| institution | Directory Open Access Journal |
| issn | 1828-454X 2280-6458 |
| language | English |
| last_indexed | 2024-12-19T13:33:46Z |
| publishDate | 2021-03-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Acque Sotterranee |
| spelling | doaj.art-c8cb0625e14940549bf9d23dafff253d2022-12-21T20:19:17ZengPAGEPress PublicationsAcque Sotterranee1828-454X2280-64582021-03-0110110.7343/as-2021-499Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliabilityMara Meggiorin0Giulia Passadore1Silvia Bertoldo2Andrea Sottani3Andrea Rinaldo4Sinergeo Srl – VicenzaDipartimento di Ingegneria Civile, Edile e Ambientale, Università di PadovaSinergeo Srl – VicenzaSinergeo Srl – VicenzaDipartimento di Ingegneria Civile, Edile e Ambientale, Università di Padova Laboratory of Echohydrology (ECHO/IIE/ENAC), École Polytechnique Fédérale de LausanneThe social, economic, and ecological importance of the aquifer system within the Bacchiglione basin (Veneto, IT) is noteworthy, and there is considerable disagreement among previous studies over its sustainable use. Investigating the long-term quantitative sustainability of the groundwater system, this study presents a statistical methodology that can be applied to similar cases. Using a combination of robust and widely used techniques, we apply the seasonal Mann–Kendall test and the Sen’s slope estimator to the recorded groundwater level timeseries. The analysis is carried out on a large and heterogeneous proprietary dataset gathering hourly groundwater level timeseries at 79 control points, acquired during the period 2005–2019. The test identifies significant decreasing trends for most of the available records, unlike previous studies on the quantitative status of the same resource which covered the domain investigated here for a slightly different period: 2000–2014. The present study questions the reason for such diverging results by focusing on the method’s accuracy. After carrying out a Fourier analysis on the longest available timeseries, for studies of groundwater status assessment this work suggests applying the Mann–Kendall test to timeseries longer than 20 years (because otherwise the analysis would be affected by interannual periodicities of the water cycle). A further analysis of two 60-year-long monthly timeseries between 1960 and 2020 supports the actual sustainable use of the groundwater resource, the past deployment of the groundwater resources notwithstanding. Results thus prove more reliable, and meaningful inferences on the longterm sustainability of the groundwater system are possible.https://www.acquesotterranee.net/index.php/acque/article/view/499Mann-Kendall testSen’s slope estimatorsustainabilitygroundwater levelBacchiglione |
| spellingShingle | Mara Meggiorin Giulia Passadore Silvia Bertoldo Andrea Sottani Andrea Rinaldo Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability Acque Sotterranee Mann-Kendall test Sen’s slope estimator sustainability groundwater level Bacchiglione |
| title | Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability |
| title_full | Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability |
| title_fullStr | Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability |
| title_full_unstemmed | Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability |
| title_short | Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability |
| title_sort | assessing the long term sustainability of the groundwater resources in the bacchiglione basin veneto italy with the mann kendall test suggestions for higher reliability |
| topic | Mann-Kendall test Sen’s slope estimator sustainability groundwater level Bacchiglione |
| url | https://www.acquesotterranee.net/index.php/acque/article/view/499 |
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