Bouderbala Abdelkader | Université De Khemis Miliana Ude Km Algéria (original) (raw)
Papers by Bouderbala Abdelkader
020 1st International Conference on Communications, Control Systems and Signal Processing (CCSSP), 2020
Protection of equipment, safety of persons and continuity of power supply are the main objectives... more Protection of equipment, safety of persons and continuity of power supply are the main objectives of the grounding system. For its accurate design, it is essential to determine the potential distribution on the earth surface and the equivalent resistance of the system. In this article we propose a numerical method based on Finite Elements Method (FEM) to design a grounding system. This earthing system is considered a rod electrode buried vertically in the ground. The resistance of the system which is a very important factor in the process of this design. The FEM method is used to estimate the solution of the partial differential equation which governs the behavior of the system. COMSOL multiphysics, which is one of the packages running with the FEM, is used as a tool in this design. The resistance values obtained by COMSOL Multiphysics are compared with the values calculated with the analytical formula of different type’s soil resistance. Finally, the potential distribution on the earth surface is determined
La Tunisie medicale, 2018
Revista Geológica de América Central, 2007
RESUMEN: El Acuífero Aluvial Naranjito es una de las tres fuentes de abastecimiento de agua potab... more RESUMEN: El Acuífero Aluvial Naranjito es una de las tres fuentes de abastecimiento de agua potable de la comunidad de Quepos, por lo que se determina como principal objetivo describir la geología, los parámetros hidrogeológicos e hidrogeoquímicos de la cuenca baja del río Naranjo. El área de estudio se caracteriza por presentar rocas sedimentarias marinas y terrígenas del Terciario Inferior y del Cuaternario, que incluyen como principal unidad acuífera los depósitos aluviales, de velocidades de infiltración variables, alta transmisividad y alta conductividad hidráulica. A partir de la composición química de las muestras analizadas, se determinaron dos unidades de agua subterránea distintas, las cuales se clasifican dentro del tipo bicarbonatada cálcica y bicarbonatada clorurada sódica magnésica. Con ayuda de la exploración geofísica mediante la resistividad eléctrica, se obtiene información del acuífero, como la profundidad del nivel del agua, las variaciones laterales y en profundidad de los depósitos aluviales.
Acta Crystallographica Section D Biological Crystallography, 2003
Recently, there has been a resurgence in phasing using the single-wavelength anomalous diffractio... more Recently, there has been a resurgence in phasing using the single-wavelength anomalous diffraction (SAD) experiment; data from a single wavelength in combination with techniques such as density modi®cation have been used to solve macromolecular structures, even with a very small anomalous signal. Here, a formulation for SAD phasing and re®nement employing multivariate statistical techniques is presented. The equation developed accounts explicitly for the correlations among the observed and calculated Friedel mates in a SAD experiment. The correlated SAD equation has been implemented and test cases performed on real diffraction data have revealed better results compared with currently used programs in terms of correlation with the ®nal map and obtaining more reliable phase probability statistics.
Journal of Fundamental and Applied Sciences, 2021
This work focuses to the study of the coastal aquifer of of Tipaza in the north of Algeria, for h... more This work focuses to the study of the coastal aquifer of of Tipaza in the north of Algeria, for highlights mechanisms of potential seawater intrusion into groundwater. Tipaza aquifer has been overexploited for irrigation and water supply, which caused a negatively impacts on its water quality. To investigate these impacts, many tools have been carried out as: monitoring of piezometric level and physico-chemical analysis of 24 wells from 2008 to 2012 and pumping tests. The piezometric map shows the existence of zero meter level inside the plain; which making this area vulnerable to seawater intrusion, where isovalue curves of some chemical parameters are in increasing towards the sea. Results show also a high concentration gradient of some parameters in the first two kilometers, at 1 mS.cm-1.km-1 for EC and 600 to 900 mg.L-1.km-1 for sodium and chlorides respectively. The hydrochemical study confirme the hypothesis of seawater intrusion in the coastal aquifer of Nador.
Stochastic Environmental Research and Risk Assessment, 2013
ABSTRACT Groundwater quality in Ma’an area was evaluated for its suitability for drinking and agr... more ABSTRACT Groundwater quality in Ma’an area was evaluated for its suitability for drinking and agricultural uses by determining the main physical and chemical properties during a 1 year survey study (August 2009 to August 2010). Several samples were collected from ten different wells and analysed for temperature, pH, conductivity, total dissolved solids, total hardness, major cations (Ca2+, Mg2+, Na+ and K+), major anions (HCO3−, Cl−, NO3−, SO42−, F− and Br−) and trace metals (Fe2+, Al3+, Mn2+, Cu2+, Zn2+, Pb2+ and Cd2+). The general chemistry of water samples was typically of alkaline earth waters with prevailing bicarbonate chloride. The results showed great variations among the analyzed samples with respect to their physical and chemical parameters. However, most values were below the maximum permissible levels recommended by Jordanian and WHO drinking water standards. The quality assessment shows that in general, the GW in the study area is not entirely fit for direct drinking with respect to EC, and Pb2+. According to the residual sodium carbonate and sodium adsorption ratio, the water in the studied wells can be used for irrigational purposes.
Geofísica Internacional, 2016
The groundwater in Nador coastal plio-quaternary aquifer had high salinity in 1995, due to a seaw... more The groundwater in Nador coastal plio-quaternary aquifer had high salinity in 1995, due to a seawater intrusion, where the Electrical Conductivity (EC) exceeded 9000 μS.cm-1. After the implementation of Boukourdane’s dam, a pumping reduction of groundwater occured, and the irrigation was ensured by the dam and the water resulting from the sewage treatment plant.The physico-chemical analysis of the groundwater quality for the year 2013 shows that there is a dilution of the salinity compared to 1995 with values of EC less than 4400 μS.cm-1. It also shows that more than 45% of the physico-chemical parameters have values above the permissible limits of the WHO standard for drinking purpose. The geophysical study is aimed mainly to understand the geophysical characteristics of groundwater in Nador plain by studying the electrical resistivity distribution of the subsurface saturated layers by applying the Vertical Electrical Sounding (VES) and Electrical Resistivity Tomography (ERT) tec...
The Handbook of Environmental Chemistry, 2020
The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
The Handbook of Environmental Chemistry, 2020
This chapter summarizes the main contents of the chapters presented in the book “Water Resources ... more This chapter summarizes the main contents of the chapters presented in the book “Water Resources in Algeria: Water Quality, Treatment, Protection and Development” according to its three themes. Consequently, the latest finding of research on water quality and modelling, wastewater treatment and reuse and protection of water resources. Also, key information on the development and future of water resources in Algeria were highlighted. The editors believe that the contained information are important to support the sustainable development in Algeria as an arid country in the MENA region.
The Handbook of Environmental Chemistry, 2020
The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
The Handbook of Environmental Chemistry, 2020
Arabian Journal of Geosciences, 2016
In the coastal aquifer of Nador, aquifer vulnerability index (AVI) and Groundwater occurrence, Aq... more In the coastal aquifer of Nador, aquifer vulnerability index (AVI) and Groundwater occurrence, Aquifer hydraulic conductivity, Level above sea, Distance from the shore, Impact magnitude of the existing seawater intrusion in the area, Thickness of the aquifer which is being mapped (GALDIT) methods were employed to determine the groundwater vulnerability to anthropogenic pollution and seawater intrusion. The groundwater quality is also studied by using water quality index (WQI), for identify sectors with the best quality for drinking purposes. The AVI method classified the area into three vulnerability classes: low, moderate, and high vulnerability in the two parts of Nador valley due to anthropogenic activities, while the GALDIT method delineates the area into three vulnerability classes: low (<5), moderate (5-7.5), and high (>7.5) covering 47, 36, and 17 %, respectively, of the study area surface. The high class is located in the coastal sector; it is due to the proximity to the sea, the high hydraulic conductivity of aquifer, the exchange freshwaterseawater after the overexploitation, and also the thickness of the aquifer. WQI has been calculated in the present study to assess suitability of groundwater for drinking purposes. Twenty-four groundwater samples were collected from the Nador plain during the dry period of 2013. The WQI show that 17 % of groundwater sample falls in good water category, 46 % falls in poor water category, 12 % falls in very poor water category, and 25 % falls in unsuitable water category. The groundwater unsuitable for drinking purposes is due to its high salinity, with high values of EC, Cl − , Na + , Mg 2+ , and SO 4 2− due to the seawater intrusion.
Acta Geophysica, 2014
The aquifer of Nador has suffered significant salinization due to seawater intrusion. It was stro... more The aquifer of Nador has suffered significant salinization due to seawater intrusion. It was strongly exploited during the 1980s and 1990s. A piezometric analysis in April 2012 showed the piezometric level to lie at 0 m a.s.l. over the plain; as a result, this aquifer is highly sensitive to the marine intrusion with an electrical conductivity of the groundwater in of exceeds 2500 μS/cm and so there are no abstractions for irrigation or drinking purpose from these sectors. The geoelectric study also showed the lateral variation in the electrical resistivity for two moments separated in time by more than 45 years. The fall in resistivity may be due to the encroachment of seawater into previously freshwater zones and/or infiltration during the era of pumped abstractions downstream. The resistivity surveys reveal two distinct sectors: the saturated aquifer in brackish and saltwater having resistivity values to 36-10 Ωm, which extends nearly 1600 m inland.
Environmental Earth Sciences, 2014
The groundwater of Nador plain has been overexploited during the last two decades. The goal was t... more The groundwater of Nador plain has been overexploited during the last two decades. The goal was to meet the demands of intensive agricultural activities and at the same time the supply of drinking water. As a result, the dynamic balance between freshwater and seawater has been disturbed and the quality of the groundwater has deteriorated. The degradation of the groundwater quality is characterized by salinization phenomena. In this project, the analysis of the piezometric map indicates a piezometric water level of 0 m inside the plain. The chemical analysis of major ions in the groundwater was carried out on the water samples of 24 wells: it indicates an electrical conductivity of water exceeding 1,500 lS/cm, and chloride concentrations exceeding 500 mg/L in the downstream of the plain. Presently, the groundwater in this coastal sector is used neither for drinking water nor for irrigation. In this study, 35 vertical electrical soundings (VES) were carried out in the area, with geoelectrical sections and maps of isoresistivity created to delineate the zones that are affected by saltwater intrusion. The findings suggest that saltwater intrusion has reached a distance of approximately 1,600 m inside the aquifer.
International Journal of Climate Change Strategies and Management, 2009
PurposeThe purpose of this paper is to indicate the limitations of the studies that address the i... more PurposeThe purpose of this paper is to indicate the limitations of the studies that address the impact of climate change on groundwater resources and to suggest an improved approach.Design/methodology/approachA general review, both from a groundwater hydrological and a climatological viewpoint, is given, oriented on the impact of climate change on groundwater resources.FindingsThe impact of climate change on groundwater resources is not the subject of many studies in the scientific literature. Only rarely sophisticated downscaling techniques are applied to downscale estimated global circulation model (GCM) future precipitation series for a point or region of interest. Often it is not taken into account that different climate models calculate considerably different precipitation amounts (conceptual uncertainty). The joint downscaling of the meteorological variables that govern potential evapotranspiration (ET) is never done in the context of a study that assessed the impact of climat...
Environmental & Socio-economic Studies, 2020
Groundwater quality in the alluvial aquifer of Wadi Hachem, Tipaza, was assessed for drinking and... more Groundwater quality in the alluvial aquifer of Wadi Hachem, Tipaza, was assessed for drinking and irrigation purposes. This alluvial plain covers an area of 13 km² and lies in a semiarid climate. Groundwater is the major source for domestic and agricultural water activities in this region, and it is facing natural conditions and anthropogenic activities. The groundwater quality was evaluated on the basis of its physicochemical parameters for the dry period of 2015. The results of these parameters were compared with WHO and Algerian standards recommended for drinking water. The water quality was found to be slightly alkaline, with moderate water quality for drinking based on Total Hardness (TH), Electrical Conductivity (EC) and Total Dissolved Solids (TDS), and all water samples were within the permissible limit for drinking and irrigation purposes. The samples also showed two water types, Ca- HCO3 for the majority of samples, that characterize natural water quality controlled genera...
The Mitidja plain is situated in the North of Algeria. It extends over an area of about 1450 km2.... more The Mitidja plain is situated in the North of Algeria. It extends over an area of about 1450 km2. It is bordered in the north by the Mediterranean Sea in its eastern part, and by the Sahel mountains (260 m l.a.s) in its western part.
The impact of individual septic tank effluent on groundwater quality was investigated in the rura... more The impact of individual septic tank effluent on groundwater quality was investigated in the rural area of the Ain Soltane municipality. The septic tank is a solution for the pre-treatment of sewage. It ensures the partial liquefaction of concentrated pollutants in wastewater and the retention of solids and floating waste. The alluvial gravel aquifer of the Cheliff Plain is especially susceptible to microbial contamination due to the significant number of septic tanks and the high quantity of pre-treated wastewater passing toward the groundwater which may transport bacteria and contaminants over large distances. Geological investigations established the presence of limestone carapace, and stones with high thickness and good permeability, which forms an unconfined aquifer in the area. Groundwater quality monitoring showed a significant degree of an organic pollution in the majority of wells, with very high concentrations of sulfate and chloride exceeding 450 and 250 mg/L, respectivel...
020 1st International Conference on Communications, Control Systems and Signal Processing (CCSSP), 2020
Protection of equipment, safety of persons and continuity of power supply are the main objectives... more Protection of equipment, safety of persons and continuity of power supply are the main objectives of the grounding system. For its accurate design, it is essential to determine the potential distribution on the earth surface and the equivalent resistance of the system. In this article we propose a numerical method based on Finite Elements Method (FEM) to design a grounding system. This earthing system is considered a rod electrode buried vertically in the ground. The resistance of the system which is a very important factor in the process of this design. The FEM method is used to estimate the solution of the partial differential equation which governs the behavior of the system. COMSOL multiphysics, which is one of the packages running with the FEM, is used as a tool in this design. The resistance values obtained by COMSOL Multiphysics are compared with the values calculated with the analytical formula of different type’s soil resistance. Finally, the potential distribution on the earth surface is determined
La Tunisie medicale, 2018
Revista Geológica de América Central, 2007
RESUMEN: El Acuífero Aluvial Naranjito es una de las tres fuentes de abastecimiento de agua potab... more RESUMEN: El Acuífero Aluvial Naranjito es una de las tres fuentes de abastecimiento de agua potable de la comunidad de Quepos, por lo que se determina como principal objetivo describir la geología, los parámetros hidrogeológicos e hidrogeoquímicos de la cuenca baja del río Naranjo. El área de estudio se caracteriza por presentar rocas sedimentarias marinas y terrígenas del Terciario Inferior y del Cuaternario, que incluyen como principal unidad acuífera los depósitos aluviales, de velocidades de infiltración variables, alta transmisividad y alta conductividad hidráulica. A partir de la composición química de las muestras analizadas, se determinaron dos unidades de agua subterránea distintas, las cuales se clasifican dentro del tipo bicarbonatada cálcica y bicarbonatada clorurada sódica magnésica. Con ayuda de la exploración geofísica mediante la resistividad eléctrica, se obtiene información del acuífero, como la profundidad del nivel del agua, las variaciones laterales y en profundidad de los depósitos aluviales.
Acta Crystallographica Section D Biological Crystallography, 2003
Recently, there has been a resurgence in phasing using the single-wavelength anomalous diffractio... more Recently, there has been a resurgence in phasing using the single-wavelength anomalous diffraction (SAD) experiment; data from a single wavelength in combination with techniques such as density modi®cation have been used to solve macromolecular structures, even with a very small anomalous signal. Here, a formulation for SAD phasing and re®nement employing multivariate statistical techniques is presented. The equation developed accounts explicitly for the correlations among the observed and calculated Friedel mates in a SAD experiment. The correlated SAD equation has been implemented and test cases performed on real diffraction data have revealed better results compared with currently used programs in terms of correlation with the ®nal map and obtaining more reliable phase probability statistics.
Journal of Fundamental and Applied Sciences, 2021
This work focuses to the study of the coastal aquifer of of Tipaza in the north of Algeria, for h... more This work focuses to the study of the coastal aquifer of of Tipaza in the north of Algeria, for highlights mechanisms of potential seawater intrusion into groundwater. Tipaza aquifer has been overexploited for irrigation and water supply, which caused a negatively impacts on its water quality. To investigate these impacts, many tools have been carried out as: monitoring of piezometric level and physico-chemical analysis of 24 wells from 2008 to 2012 and pumping tests. The piezometric map shows the existence of zero meter level inside the plain; which making this area vulnerable to seawater intrusion, where isovalue curves of some chemical parameters are in increasing towards the sea. Results show also a high concentration gradient of some parameters in the first two kilometers, at 1 mS.cm-1.km-1 for EC and 600 to 900 mg.L-1.km-1 for sodium and chlorides respectively. The hydrochemical study confirme the hypothesis of seawater intrusion in the coastal aquifer of Nador.
Stochastic Environmental Research and Risk Assessment, 2013
ABSTRACT Groundwater quality in Ma’an area was evaluated for its suitability for drinking and agr... more ABSTRACT Groundwater quality in Ma’an area was evaluated for its suitability for drinking and agricultural uses by determining the main physical and chemical properties during a 1 year survey study (August 2009 to August 2010). Several samples were collected from ten different wells and analysed for temperature, pH, conductivity, total dissolved solids, total hardness, major cations (Ca2+, Mg2+, Na+ and K+), major anions (HCO3−, Cl−, NO3−, SO42−, F− and Br−) and trace metals (Fe2+, Al3+, Mn2+, Cu2+, Zn2+, Pb2+ and Cd2+). The general chemistry of water samples was typically of alkaline earth waters with prevailing bicarbonate chloride. The results showed great variations among the analyzed samples with respect to their physical and chemical parameters. However, most values were below the maximum permissible levels recommended by Jordanian and WHO drinking water standards. The quality assessment shows that in general, the GW in the study area is not entirely fit for direct drinking with respect to EC, and Pb2+. According to the residual sodium carbonate and sodium adsorption ratio, the water in the studied wells can be used for irrigational purposes.
Geofísica Internacional, 2016
The groundwater in Nador coastal plio-quaternary aquifer had high salinity in 1995, due to a seaw... more The groundwater in Nador coastal plio-quaternary aquifer had high salinity in 1995, due to a seawater intrusion, where the Electrical Conductivity (EC) exceeded 9000 μS.cm-1. After the implementation of Boukourdane’s dam, a pumping reduction of groundwater occured, and the irrigation was ensured by the dam and the water resulting from the sewage treatment plant.The physico-chemical analysis of the groundwater quality for the year 2013 shows that there is a dilution of the salinity compared to 1995 with values of EC less than 4400 μS.cm-1. It also shows that more than 45% of the physico-chemical parameters have values above the permissible limits of the WHO standard for drinking purpose. The geophysical study is aimed mainly to understand the geophysical characteristics of groundwater in Nador plain by studying the electrical resistivity distribution of the subsurface saturated layers by applying the Vertical Electrical Sounding (VES) and Electrical Resistivity Tomography (ERT) tec...
The Handbook of Environmental Chemistry, 2020
The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
The Handbook of Environmental Chemistry, 2020
This chapter summarizes the main contents of the chapters presented in the book “Water Resources ... more This chapter summarizes the main contents of the chapters presented in the book “Water Resources in Algeria: Water Quality, Treatment, Protection and Development” according to its three themes. Consequently, the latest finding of research on water quality and modelling, wastewater treatment and reuse and protection of water resources. Also, key information on the development and future of water resources in Algeria were highlighted. The editors believe that the contained information are important to support the sustainable development in Algeria as an arid country in the MENA region.
The Handbook of Environmental Chemistry, 2020
The use of general descriptive names, registered names, trademarks, service marks, etc. in this p... more The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
The Handbook of Environmental Chemistry, 2020
Arabian Journal of Geosciences, 2016
In the coastal aquifer of Nador, aquifer vulnerability index (AVI) and Groundwater occurrence, Aq... more In the coastal aquifer of Nador, aquifer vulnerability index (AVI) and Groundwater occurrence, Aquifer hydraulic conductivity, Level above sea, Distance from the shore, Impact magnitude of the existing seawater intrusion in the area, Thickness of the aquifer which is being mapped (GALDIT) methods were employed to determine the groundwater vulnerability to anthropogenic pollution and seawater intrusion. The groundwater quality is also studied by using water quality index (WQI), for identify sectors with the best quality for drinking purposes. The AVI method classified the area into three vulnerability classes: low, moderate, and high vulnerability in the two parts of Nador valley due to anthropogenic activities, while the GALDIT method delineates the area into three vulnerability classes: low (<5), moderate (5-7.5), and high (>7.5) covering 47, 36, and 17 %, respectively, of the study area surface. The high class is located in the coastal sector; it is due to the proximity to the sea, the high hydraulic conductivity of aquifer, the exchange freshwaterseawater after the overexploitation, and also the thickness of the aquifer. WQI has been calculated in the present study to assess suitability of groundwater for drinking purposes. Twenty-four groundwater samples were collected from the Nador plain during the dry period of 2013. The WQI show that 17 % of groundwater sample falls in good water category, 46 % falls in poor water category, 12 % falls in very poor water category, and 25 % falls in unsuitable water category. The groundwater unsuitable for drinking purposes is due to its high salinity, with high values of EC, Cl − , Na + , Mg 2+ , and SO 4 2− due to the seawater intrusion.
Acta Geophysica, 2014
The aquifer of Nador has suffered significant salinization due to seawater intrusion. It was stro... more The aquifer of Nador has suffered significant salinization due to seawater intrusion. It was strongly exploited during the 1980s and 1990s. A piezometric analysis in April 2012 showed the piezometric level to lie at 0 m a.s.l. over the plain; as a result, this aquifer is highly sensitive to the marine intrusion with an electrical conductivity of the groundwater in of exceeds 2500 μS/cm and so there are no abstractions for irrigation or drinking purpose from these sectors. The geoelectric study also showed the lateral variation in the electrical resistivity for two moments separated in time by more than 45 years. The fall in resistivity may be due to the encroachment of seawater into previously freshwater zones and/or infiltration during the era of pumped abstractions downstream. The resistivity surveys reveal two distinct sectors: the saturated aquifer in brackish and saltwater having resistivity values to 36-10 Ωm, which extends nearly 1600 m inland.
Environmental Earth Sciences, 2014
The groundwater of Nador plain has been overexploited during the last two decades. The goal was t... more The groundwater of Nador plain has been overexploited during the last two decades. The goal was to meet the demands of intensive agricultural activities and at the same time the supply of drinking water. As a result, the dynamic balance between freshwater and seawater has been disturbed and the quality of the groundwater has deteriorated. The degradation of the groundwater quality is characterized by salinization phenomena. In this project, the analysis of the piezometric map indicates a piezometric water level of 0 m inside the plain. The chemical analysis of major ions in the groundwater was carried out on the water samples of 24 wells: it indicates an electrical conductivity of water exceeding 1,500 lS/cm, and chloride concentrations exceeding 500 mg/L in the downstream of the plain. Presently, the groundwater in this coastal sector is used neither for drinking water nor for irrigation. In this study, 35 vertical electrical soundings (VES) were carried out in the area, with geoelectrical sections and maps of isoresistivity created to delineate the zones that are affected by saltwater intrusion. The findings suggest that saltwater intrusion has reached a distance of approximately 1,600 m inside the aquifer.
International Journal of Climate Change Strategies and Management, 2009
PurposeThe purpose of this paper is to indicate the limitations of the studies that address the i... more PurposeThe purpose of this paper is to indicate the limitations of the studies that address the impact of climate change on groundwater resources and to suggest an improved approach.Design/methodology/approachA general review, both from a groundwater hydrological and a climatological viewpoint, is given, oriented on the impact of climate change on groundwater resources.FindingsThe impact of climate change on groundwater resources is not the subject of many studies in the scientific literature. Only rarely sophisticated downscaling techniques are applied to downscale estimated global circulation model (GCM) future precipitation series for a point or region of interest. Often it is not taken into account that different climate models calculate considerably different precipitation amounts (conceptual uncertainty). The joint downscaling of the meteorological variables that govern potential evapotranspiration (ET) is never done in the context of a study that assessed the impact of climat...
Environmental & Socio-economic Studies, 2020
Groundwater quality in the alluvial aquifer of Wadi Hachem, Tipaza, was assessed for drinking and... more Groundwater quality in the alluvial aquifer of Wadi Hachem, Tipaza, was assessed for drinking and irrigation purposes. This alluvial plain covers an area of 13 km² and lies in a semiarid climate. Groundwater is the major source for domestic and agricultural water activities in this region, and it is facing natural conditions and anthropogenic activities. The groundwater quality was evaluated on the basis of its physicochemical parameters for the dry period of 2015. The results of these parameters were compared with WHO and Algerian standards recommended for drinking water. The water quality was found to be slightly alkaline, with moderate water quality for drinking based on Total Hardness (TH), Electrical Conductivity (EC) and Total Dissolved Solids (TDS), and all water samples were within the permissible limit for drinking and irrigation purposes. The samples also showed two water types, Ca- HCO3 for the majority of samples, that characterize natural water quality controlled genera...
The Mitidja plain is situated in the North of Algeria. It extends over an area of about 1450 km2.... more The Mitidja plain is situated in the North of Algeria. It extends over an area of about 1450 km2. It is bordered in the north by the Mediterranean Sea in its eastern part, and by the Sahel mountains (260 m l.a.s) in its western part.
The impact of individual septic tank effluent on groundwater quality was investigated in the rura... more The impact of individual septic tank effluent on groundwater quality was investigated in the rural area of the Ain Soltane municipality. The septic tank is a solution for the pre-treatment of sewage. It ensures the partial liquefaction of concentrated pollutants in wastewater and the retention of solids and floating waste. The alluvial gravel aquifer of the Cheliff Plain is especially susceptible to microbial contamination due to the significant number of septic tanks and the high quantity of pre-treated wastewater passing toward the groundwater which may transport bacteria and contaminants over large distances. Geological investigations established the presence of limestone carapace, and stones with high thickness and good permeability, which forms an unconfined aquifer in the area. Groundwater quality monitoring showed a significant degree of an organic pollution in the majority of wells, with very high concentrations of sulfate and chloride exceeding 450 and 250 mg/L, respectivel...
Water Resources in Algeria - Part II, Jul 16, 2020
This chapter summarizes the main contents of the chapters presented in the book “Water Resources ... more This chapter summarizes the main contents of the chapters presented in the book “Water Resources in Algeria: Water Quality, Treatment, Protection and Development” according to its three themes. Consequently, the latest finding of research on water quality and modelling, wastewater treatment and reuse and protection of water resources. Also, key information on the development and future of water resources in Algeria were highlighted. The editors believe that the contained information are important to support the sustainable development in Algeria as an arid country in the MENA region.
Water Resources in Algeria - Part I, Jun 18, 2020
This chapter highlights the basic technical elements of the chapters presented in the book accord... more This chapter highlights the basic technical elements of the chapters presented in the book according to its four themes. Therefore, the chapter contains information on the current status of water resources in Algeria including surface water and groundwater, the hydrological investigations in Algeria and the impact of climate change on water resources, characterization of groundwater aquifers, and assessment of water resources to support the sustainable development in Algeria as an arid country in the MENA region.
Water Resources in Algeria - Part I, Nov 2020
This book reviews the latest information on the assessment of surface and groundwater resources i... more This book reviews the latest information on the assessment of surface and groundwater resources in Algeria. The authors cover a large diversity of topics, including the status and assessment of water resources, impacts of pesticides, soil droughts, analysis of flood characteristics, hydrogeological investigations and modeling applications, and evapotranspiration. Special attention is given to the impacts of climate changes on water resources. The assessment methods present in this book can be used or adapted to study other regions of North Africa, Middle East and/or in the Mediterranean with similar climate conditions as Algeria.
This book and the companion volume Water Resources in Algeria - Part II: Water Quality, Treatment, Protection and Development will appeal to engineers, researchers, graduate students and policymakers interested in the field of groundwater and surface water assessment.