Hydrogeologie objets, methodes, applications livre et. To link to the entire object, paste this link in email, im or document to embed the entire object, paste this html in website to link to this page, paste this link in email, im or document. Discharge measurements at niger river and its tributaries. Jun 21, 2018 in the central part of the semiarid dargol basin of southwestern niger, most of the groundwater resource is contained in the fractured aquifers of the precambrian basement. The latter aim at investigating methods, which allow for better monitoring and prediction of processes in groundwater. Kilian c 1931 des principaux complexes continentaux du sahara.
Groundwater recharge estimation in the lake chad basin for. N i e d e r s a c h s i s c h e s g r u n d w a s s e r k o l l o q u i u m hydrogeologie. Annual discharges variations, since the beginning of the observations, for the niger ut koulikoro and dire and for the bani at douna. Hydrogeology is the branch of geology that deals with the distribution and movement of groundwater within the soil and rocks of the earths crust. The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably groundwater engineering, another name for hydrogeology, is a branch. Take your hr comms to the next level with prezi video. Other sources of geological information a geological map of the republic of niger at 1. Hydrogeology hydromeaning water, and geology meaning the study of the earth is the area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the earths crust commonly in aquifers. Au niger, les premieres etudes hydrogeologiques ont etes entreprises par le brgm au cours des. Coupe hydrog6ologique dans le bassin du niger daprs margat, 1982. In this region the transboundary aquifer system of continental intercalaire ci and the continental hamadien ch are potentially rich in underground water especially in free and captive aquifers. For rapid agricultural, industrial, economic and social development of the niger delta basin, permanent solutions must be found to the recurring twin hazards of annual floods and erosion, in addition to the numerous geotechnical problems, resulting from the in situ nature of the finegrained deltaic soil and the prevailing climatic conditions. Invision employees share their remote work secrets. Discharge measurements at niger river and its tributaries bagoe, baoule, kouroukele and niandan.
The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably. Science of hydrogeology deals with a specific part of the hydrologic cycle mainly the part that is underground. Niger basin, hydrology, discharge, flow measurement, rating curve. Hydrologie et geochimie du bassin soudanosahelien du fleuve. Cours hydrogeologie hydrogeologie permeabilite fluide. Water quality data of the niger river around bamako, mali. The groundwater resource is poorly characterized and this study is the first attempt to better describe the recharge mechanisms and hydrogeochemical behaviour of the aquifers. Mullerla nappe alluviale du kori teloua, agadez niger. Major floods of the niger river during the more humid episodes of the holocene, probably associated with northward migration of the interior river delta flood zone, were responsible for groundwater recharge. Between 6th thand 12 february 20, discharge measurements were carried out on the niger river and selected tributaries in ivory coast and guinea. In the central part of the semiarid dargol basin of southwestern niger, most of the groundwater resource is contained in the fractured aquifers of the precambrian basement. The project is carried to collect and share continuously data on water quality of river niger in bamako and surroundings. Hydrogeology is the branch of the earth sciences dealing with.
A the height of the mali empire in the th century, the town of timbuktu was a centre of culture, learning and islamic religion, and djenne was an international trade centre. Hydrologie et geochimie du bassin soudanosahelien du. Hydrogeology and water chemistry of boreholes identified at. Cas d etudes hydrogeologiques, hydrochimiques et isotopiques realisees au niger. Hydrogeologic studies for wipp have been conducted to understand the rates and directions of groundwater flow in the salt beds of the salado formation where the waste is stored and in the rock units above and below the salado. More, this water is the main source of drinking water for the populations, the. Elle doit non seulement caracteriser des aquiferes ou nappes deau souterraines, mais surtout, aujourdhui. The aridhumid transition in the sahara and the sahel during. Hydrodynamic characteristics of the continental intercalaire. This study aims to describe the present state, geochemical and hydrodynamical, of the phreatic aquifer in eastern niger, the main permanent water resource in this sahelian environment.
New records of rainfall show that during the subsequent deglaciation, the transition from. Mali is a landlocked country, formerly part of the three ancient sahelian empires of ghana, mali and songhai. In the semiarid niamey area niger, more than 10% of the deep wells exploiting the fracture network of the precambrian aquifer are contaminated by nitrates, with concentrations as high as 10 meq l. At the time of the last glacial maximum, the sahara and sahel regions of north africa were extremely dry. Etude hydrogeologique et prospection geophysique electromagnetique, bull. Bassins hydrogologiques les principaux bassins hydrogologiques sont les systmes aquifres du crtac suprieur, du tertiaire, du quaternaire. Africa groundwater literature archive bgs dfid nerc esrc. The project will involve several civil society actors through the coordination of resources users of niger river in mali, such as fishermen, dyers, maraichers, gravel and sand extractors, etc. Hydrologie, agroecologie et superficies dinondation dans le delta interieur du niger. Hydrogeology to enhance our understanding of flow, chemical reactions and transport in groundwater, we teach, develop and perform numerical, field and laboratory studies. Determining the source of nitrate pollution in the niger.
Etude du fonctionnement hydrogeochimique du systeme aquifere du chari baguirmi republique du tchad. A marine aerosol input, somewhat modified by rockwater interaction, dominates the groundwater chemistry. Other actors such as industrialists will also be involved, as. Aug 03, 2017 realisation dun forage hydraulique tgp2 1. In order to identify the sources of this pollution, nitrate and 15 n contents in the polluted wells were monitored over a 20month period. The importance of engineering geological mapping in the. Download a gis shapefile of the niger geology and hydrogeology map. Bassin sedimentaire du sahara septentrional algerietunisie. Paleorecharge by the niger river mali deduced from. Aquiferes du continental intercalaire et du complexe terminal. To link to the entire object, paste this link in email, im or document to embed the entire object, paste this html in website to link to this page, paste this link in email, im or document to embed this page, paste this html in website. These studies have shown that this formation, which primarily. Paris, science 0 2000 academie des sclenc s1251805000014695fla,l d planetary sciences 331 2000 701707 elsevier sas. This study was conducted in the region of tahoua the northeastern part of the southern illulemeden sedimentary basin.
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