Exploring causes of streamflow alteration in the Medjerda river, Algeria
Study region: The Medjerda is a transboundary catchment located in North-Eastern Algeria and shared with Tunisia. Study focus: In this study, we explore the causes of hydrological alteration of streamflow in a sub-catchment of the Medjerda in Algeria. The hydrological alteration was explored through...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-12-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221458182030224X |
| _version_ | 1819203662820409344 |
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| author | Mokrane Kadir Raed Fehri Doudja Souag Marnik Vanclooster |
| author_facet | Mokrane Kadir Raed Fehri Doudja Souag Marnik Vanclooster |
| author_sort | Mokrane Kadir |
| collection | DOAJ |
| description | Study region: The Medjerda is a transboundary catchment located in North-Eastern Algeria and shared with Tunisia. Study focus: In this study, we explore the causes of hydrological alteration of streamflow in a sub-catchment of the Medjerda in Algeria. The hydrological alteration was explored through the application of Mann-Kendall test based on possible explanatory factors, namely, precipitation, evapotranspiration, temperature, irrigation, and Normalized Difference of Vegetation Index (NDVI). Furthermore, the causal factors of streamflow variation were addressed using Convergent Cross Mapping (CCM) method. New hydrological insights for the region: Results of the trend analysis yield that the streamflow is altered during the period 1981−2012. This is consistent with the trends of the possible explanatory factors of this alteration. The Convergent Cross Mapping (CCM) method showed that streamflow alteration is unidirectionally caused by changes in patterns of precipitation, temperature, evapotranspiration, irrigation, and NDVI, and that there is little feedback from streamflow alteration to these causing factors. Overall, our assessment showed that the method used to identify the causal relationships in dynamical systems based on the CCM algorithm is suitable for exploring the drivers of the hydrologic alteration in multivariate time series, in particular when nonlinear dynamics determine the system. |
| first_indexed | 2024-12-23T04:23:29Z |
| format | Article |
| id | doaj.art-3dae020e0fa0490c8764e52a90d2d2e7 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-12-23T04:23:29Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-3dae020e0fa0490c8764e52a90d2d2e72022-12-21T18:00:11ZengElsevierJournal of Hydrology: Regional Studies2214-58182020-12-0132100750Exploring causes of streamflow alteration in the Medjerda river, AlgeriaMokrane Kadir0Raed Fehri1Doudja Souag2Marnik Vanclooster3Université catholique de Louvain, Earth and Life Institute (ELI), GERU, Croix du Sud 2, 1348 Louvain-la-Neuve, Belgium; Corresponding author.Université catholique de Louvain, Earth and Life Institute (ELI), GERU, Croix du Sud 2, 1348 Louvain-la-Neuve, BelgiumLEGHYD Laboratory, University of Science and Technology Houari Boumediene, BP 32, Bab Ezzouar, Algiers, AlgeriaUniversité catholique de Louvain, Earth and Life Institute (ELI), GERU, Croix du Sud 2, 1348 Louvain-la-Neuve, BelgiumStudy region: The Medjerda is a transboundary catchment located in North-Eastern Algeria and shared with Tunisia. Study focus: In this study, we explore the causes of hydrological alteration of streamflow in a sub-catchment of the Medjerda in Algeria. The hydrological alteration was explored through the application of Mann-Kendall test based on possible explanatory factors, namely, precipitation, evapotranspiration, temperature, irrigation, and Normalized Difference of Vegetation Index (NDVI). Furthermore, the causal factors of streamflow variation were addressed using Convergent Cross Mapping (CCM) method. New hydrological insights for the region: Results of the trend analysis yield that the streamflow is altered during the period 1981−2012. This is consistent with the trends of the possible explanatory factors of this alteration. The Convergent Cross Mapping (CCM) method showed that streamflow alteration is unidirectionally caused by changes in patterns of precipitation, temperature, evapotranspiration, irrigation, and NDVI, and that there is little feedback from streamflow alteration to these causing factors. Overall, our assessment showed that the method used to identify the causal relationships in dynamical systems based on the CCM algorithm is suitable for exploring the drivers of the hydrologic alteration in multivariate time series, in particular when nonlinear dynamics determine the system.http://www.sciencedirect.com/science/article/pii/S221458182030224XCausalityCCMHydrological alterationMedjerda riverTrends |
| spellingShingle | Mokrane Kadir Raed Fehri Doudja Souag Marnik Vanclooster Exploring causes of streamflow alteration in the Medjerda river, Algeria Journal of Hydrology: Regional Studies Causality CCM Hydrological alteration Medjerda river Trends |
| title | Exploring causes of streamflow alteration in the Medjerda river, Algeria |
| title_full | Exploring causes of streamflow alteration in the Medjerda river, Algeria |
| title_fullStr | Exploring causes of streamflow alteration in the Medjerda river, Algeria |
| title_full_unstemmed | Exploring causes of streamflow alteration in the Medjerda river, Algeria |
| title_short | Exploring causes of streamflow alteration in the Medjerda river, Algeria |
| title_sort | exploring causes of streamflow alteration in the medjerda river algeria |
| topic | Causality CCM Hydrological alteration Medjerda river Trends |
| url | http://www.sciencedirect.com/science/article/pii/S221458182030224X |
| work_keys_str_mv | AT mokranekadir exploringcausesofstreamflowalterationinthemedjerdariveralgeria AT raedfehri exploringcausesofstreamflowalterationinthemedjerdariveralgeria AT doudjasouag exploringcausesofstreamflowalterationinthemedjerdariveralgeria AT marnikvanclooster exploringcausesofstreamflowalterationinthemedjerdariveralgeria |