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292 results on '"MEDDI, Mohamed"'

5. Evolution of Groundwater in the Cheliff and Mitidja Aquifers (North Algeria) in Qualitative and Quantitative Terms

Author

Hallouz, Faiza, Meddi, Mohamed, de Boer, Jacob, Editorial Board Member, Barceló, Damià, Series Editor, Kostianoy, Andrey G., Series Editor, Garrigues, Philippe, Editorial Board Member, Hutzinger, Otto, Founding Editor, Gu, Ji-Dong, Editorial Board Member, Jones, Kevin C., Editorial Board Member, Negm, Abdelazim M., Editorial Board Member, Newton, Alice, Editorial Board Member, Nghiem, Duc Long, Editorial Board Member, Garcia-Segura, Sergi, Editorial Board Member, Verlicchi, Paola, Editorial Board Member, Wagner, Stephan, Editorial Board Member, Rocha-Santos, Teresa, Editorial Board Member, Picó, Yolanda, Editorial Board Member, Ali, Shakir, editor, and Negm, Abdelazim, editor

Published
2024
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8. Effects of seasonal changes in vegetation cover on the hydrological responses of the Chemora Wadi catchment to extreme rainfall

Author

Berghout Ali and Meddi Mohamed

Subjects
curve number, extreme floods, hec-hms, ndvi, wadi chemora watershed, rain-flow, Geography (General), G1-922
Abstract

The choice of the reference flood for the dimensioning of hydraulic structures is rather delicate, in particular in the not gauged basins. In these basins, the estimation of the project flood requires the use of predetermined methods based on the maximum daily precipitation. In this context, this work consists of evaluating the impact of seasonal changes in vegetation cover on the hydrological responses of the watershed to extreme precipitation events in terms of peaks and water volumes using the HEC-HMS model. The study was based on rainfall and discharge data recorded at rainfall and hydrometric stations in the Wadi Chemora basin (Algeria), in addition to remote sensing data on a monthly scale. The results show that the estimation of the projected flood using methods based only on maxi-mum daily rainfall in semi-arid areas is insufficient, which shows the interest of consider-ing the effects of these changes.

Published
2024
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11. Statistical Study of Rainfall and Sediment Transport in the North-West of Algeria

Author

Hallouz, Faiza, Meddi, Mohamed, Mahé, Gil, Rahmani, Salah Eddine Ali, Chebana, Fateh, Pisello, Anna Laura, Editorial Board Member, Hawkes, Dean, Editorial Board Member, Bougdah, Hocine, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Boemi, Sofia-Natalia, Editorial Board Member, Mohareb, Nabil, Editorial Board Member, Mesbah Elkaffas, Saleh, Editorial Board Member, Bozonnet, Emmanuel, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Mahgoub, Yasser, Editorial Board Member, De Bonis, Luciano, Editorial Board Member, Kostopoulou, Stella, Editorial Board Member, Pradhan, Biswajeet, Editorial Board Member, Abdul Mannan, Md., Editorial Board Member, Alalouch, Chaham, Editorial Board Member, Gawad, Iman O., Editorial Board Member, Nayyar, Anand, Editorial Board Member, Amer, Mourad, Series Editor, Kallel, Amjad, editor, Barbieri, Maurizio, editor, Rodrigo-Comino, Jesús, editor, Chaminé, Helder I., editor, Merkel, Broder, editor, Chenchouni, Haroun, editor, Knight, Jasper, editor, Panda, Sandeep, editor, Khélifi, Nabil, editor, Benim, Ali Cemal, editor, Grab, Stefan, editor, El-Askary, Hesham, editor, Banerjee, Santanu, editor, Hadji, Riheb, editor, and Eshagh, Mehdi, editor

Published
2023
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13. Regional flood frequency analysis in North Africa

Author

Tramblay, Yves, El Khalki, El Mahdi, Khedimallah, Abderrahmane, Sadaoui, Mahrez, Benaabidate, Lahcen, Boulmaiz, Tayeb, Boutaghane, Hamouda, Dakhlaoui, Hamouda, Hanich, Lahoucine, Ludwig, Wolfgang, Meddi, Mohamed, Elmehdi Saidi, Mohamed, and Mahé, Gil

Published
2024
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16. Assessment of Water Soil Erosion by RUSLE Model Using Remote Sensing and GIS in Wadi Cheliff Basin (Algeria)

Author

Toumi, Samir, Meddi, Mohamed, Mahé, Gil, Pisello, Anna Laura, Editorial Board Member, Hawkes, Dean, Editorial Board Member, Bougdah, Hocine, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Boemi, Sofia-Natalia, Editorial Board Member, Mohareb, Nabil, Editorial Board Member, Mesbah Elkaffas, Saleh, Editorial Board Member, Bozonnet, Emmanuel, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Mahgoub, Yasser, Editorial Board Member, De Bonis, Luciano, Editorial Board Member, Kostopoulou, Stella, Editorial Board Member, Pradhan, Biswajeet, Editorial Board Member, Abdul Mannan, Md., Editorial Board Member, Alalouch, Chaham, Editorial Board Member, O. Gawad, Iman, Editorial Board Member, Nayyar, Anand, Editorial Board Member, Amer, Mourad, Series Editor, El-Askary, Hesham, editor, Erguler, Zeynal Abiddin, editor, Karakus, Murat, editor, and Chaminé, Helder I., editor

Published
2022
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24. Analysis of Flood Characteristics in the Context of Climate Variability in Northern Algeria: Case of Cheliff Watershed

Author

Sadeuk Ben Abbes, Abdelkader, Meddi, Mohamed, Renima, Mohamed, Bouderbala, Abdelkader, Barceló, Damià, Series Editor, de Boer, Jacob, Editorial Board Member, Kostianoy, Andrey G., Series Editor, Garrigues, Philippe, Editorial Board Member, Hutzinger, Otto, Founding Editor, Gu, Ji-Dong, Editorial Board Member, Jones, Kevin C., Editorial Board Member, Knepper, Thomas P., Editorial Board Member, Negm, Abdelazim M., Editorial Board Member, Newton, Alice, Editorial Board Member, Nghiem, Duc Long, Editorial Board Member, Garcia-Segura, Sergi, Editorial Board Member, Bouderbala, Abdelkader, editor, and Chenchouni, Haroun, editor

Published
2020
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26. Changes in extreme precipitation indices across Algeria climate zones.

Author

Hamitouche, Yasmine, Zeroual, Ayoub, Meddi, Mohamed, Assani, Ali Arkamose, and Alkama, Ramdane

Subjects
CLIMATIC zones, PRECIPITATION variability, GLOBAL warming, MEDITERRANEAN climate, TREND analysis
Abstract

Extreme precipitation events can have a significant impact on the environment, agriculture, economy and safety, making close monitoring of their short‐ and long‐term trends essential for the development of effective mitigation and adaptation strategies. In this study, we analysed 16 in situ observation datasets from four different climate zones in Algeria, spanning from 1969 to 2021. The trend analysis was conducted using the original Mann–Kendall test and seven modified tests to eliminate the effects of short‐term persistence. Our findings reveal a significant increasing trend of extreme precipitation variability for most stations in the Warm Mediterranean climate zone, except for the Consecutive dry days index, which showed a negative trend for the same zone, while stations in the Cold/Warm semi‐arid climate and Cold desert climate (Bwk) zones showed a decreasing trend. Additionally, all index series with significant long‐term trends were affected by a significant shift in their means, which was confirmed by both the Lombard and Pettitt tests. However, when we used the modified MPT and the test eliminating the effects of long‐term persistence, the significance of the shifts and the trend decreased. Our results suggest that while extreme precipitation events have been increasing in some parts of Algeria; the trend may not be statistically significant in the long‐run, indicating the necessity of revisiting and refreshing the findings of previous studies for a more current perspective. [ABSTRACT FROM AUTHOR]

Published
2024
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27. Recent Rainfall Variability in the South-West Mediterranean Region and Links with Teleconnection Patterns

Author

Taibi, Sabrina, Messelmi, Imane, Meddi, Mohamed, Feddal, Mohamed Amine, Pisello, Anna Laura, Editorial Board Member, Hawkes, Dean, Editorial Board Member, Bougdah, Hocine, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Boemi, Sofia-Natalia, Editorial Board Member, Mohareb, Nabil, Editorial Board Member, Mesbah Elkaffas, Saleh, Editorial Board Member, Bozonnet, Emmanuel, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Mahgoub, Yasser, Editorial Board Member, De Bonis, Luciano, Editorial Board Member, Kostopoulou, Stella, Editorial Board Member, Pradhan, Biswajeet, Editorial Board Member, Abdul Mannan, Md., Editorial Board Member, Alalouch, Chaham, Editorial Board Member, O. Gawad, Iman, Editorial Board Member, Amer, Mourad, Series Editor, Zhang, Zhihua, editor, Khélifi, Nabil, editor, Mezghani, Abdelkader, editor, and Heggy, Essam, editor

Published
2019
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39. Trivariate Copulas for Characterisation of Past and Future Droughts Over North-West Algeria

Author

Zeroual, Ayoub, Bouabdelli, Senna, Meddi, Mohamed, Alkama, Ramdane, Assani, Ali A., Abdalla, Hassan, Series editor, Abdul Mannan, Md., Series editor, Alalouch, Chaham, Series editor, Attia, Sahar, Series editor, Boemi, Sofia Natalia, Series editor, Bougdah, Hocine, Series editor, Bozonnet, Emmanuel, Series editor, De Bonis, Luciano, Series editor, Hawkes, Dean, Series editor, Kostopoulou, Stella, Series editor, Mahgoub, Yasser, Series editor, Mesbah Elkaffas, Saleh, Series editor, Mohareb, Nabil, Series editor, O. Gawad, Iman, Series editor, Oostra, Mieke, Series editor, Pignatta, Gloria, Series editor, Pisello, Anna Laura, Series editor, Rosso, Federica, Series editor, Kallel, Amjad, editor, Ksibi, Mohamed, editor, Ben Dhia, Hamed, editor, and Khélifi, Nabil, editor

Published
2018
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42. Modeling and Practice of Erosion and Sediment Transport under Change

Author

Meddi, Mohamed, Aksoy, Hafzullah, and Mahé, Gil

Abstract

Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.

Published
2019

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