Aug 03, 2017 realisation dun forage hydraulique tgp2 1. 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. 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. Au niger, les premieres etudes hydrogeologiques ont etes entreprises par le brgm au cours des. The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably groundwater engineering, another name for hydrogeology, is a branch. Cas d etudes hydrogeologiques, hydrochimiques et isotopiques realisees au niger. 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. The aridhumid transition in the sahara and the sahel during. 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. Bassin sedimentaire du sahara septentrional algerietunisie. 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. 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.
Other actors such as industrialists will also be involved, as. The latter aim at investigating methods, which allow for better monitoring and prediction of processes in groundwater. Hydrogeology and water chemistry of boreholes identified at. Bassins hydrogologiques les principaux bassins hydrogologiques sont les systmes aquifres du crtac suprieur, du tertiaire, du quaternaire. Science of hydrogeology deals with a specific part of the hydrologic cycle mainly the part that is underground. Hydrologie et geochimie du bassin soudanosahelien du fleuve. This study was conducted in the region of tahoua the northeastern part of the southern illulemeden sedimentary basin. Mullerla nappe alluviale du kori teloua, agadez niger. Determining the source of nitrate pollution in the niger. 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. Annual discharges variations, since the beginning of the observations, for the niger ut koulikoro and dire and for the bani at douna. Hydrogeologie objets, methodes, applications livre et. Groundwater recharge estimation in the lake chad basin for.
Other sources of geological information a geological map of the republic of niger at 1. Hydrodynamic characteristics of the continental intercalaire. Paleorecharge by the niger river mali deduced from. More, this water is the main source of drinking water for the populations, the. Cours hydrogeologie hydrogeologie permeabilite fluide. 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. Etude du fonctionnement hydrogeochimique du systeme aquifere du chari baguirmi republique du tchad. 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. 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. Discharge measurements at niger river and its tributaries. Africa groundwater literature archive bgs dfid nerc esrc. Use of geological and hydrogeochemical data to investigate.
These studies have shown that this formation, which primarily. 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. In order to identify the sources of this pollution, nitrate and 15 n contents in the polluted wells were monitored over a 20month period. Water quality data of the niger river around bamako, mali. Hydrologie et geochimie du bassin soudanosahelien du. Niger basin, hydrology, discharge, flow measurement, rating curve. The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably. Discharge measurements at niger river and its tributaries bagoe, baoule, kouroukele and niandan. Download a gis shapefile of the niger geology and hydrogeology map. Evolution des modules annuels, depuis lorigine des observations, du niger a koulikoro et dire et du bani a douna. Coupe hydrog6ologique dans le bassin du niger daprs margat, 1982. 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.
A marine aerosol input, somewhat modified by rockwater interaction, dominates the groundwater chemistry. 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. Hydrogeology is the branch of the earth sciences dealing with. Take your hr comms to the next level with prezi video. 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. Between 6th thand 12 february 20, discharge measurements were carried out on the niger river and selected tributaries in ivory coast and guinea. Paris, science 0 2000 academie des sclenc s1251805000014695fla,l d planetary sciences 331 2000 701707 elsevier sas. Aquiferes du continental intercalaire et du complexe terminal. Elle doit non seulement caracteriser des aquiferes ou nappes deau souterraines, mais surtout, aujourdhui. At the time of the last glacial maximum, the sahara and sahel regions of north africa were extremely dry. Mali is a landlocked country, formerly part of the three ancient sahelian empires of ghana, mali and songhai. Hydrogeology to enhance our understanding of flow, chemical reactions and transport in groundwater, we teach, develop and perform numerical, field and laboratory studies. Hydrogeology is the branch of geology that deals with the distribution and movement of groundwater within the soil and rocks of the earths crust.
Etude hydrogeologique et prospection geophysique electromagnetique, bull. Kilian c 1931 des principaux complexes continentaux du sahara. Invision employees share their remote work secrets. 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. The importance of engineering geological mapping in the. Hydrologie, agroecologie et superficies dinondation dans le delta interieur du niger. Le president du bureau preside lassemblee generale. The project is carried to collect and share continuously data on water quality of river niger in bamako and surroundings.
1505 1277 616 1500 200 1432 1181 468 838 713 1466 682 1493 367 729 1600 1419 741 1486 1029 982 486 1616 1190 767 1488 443 469 126 880 1192 198 1293