Characterization of recharge mechanisms in a precambrian. Hydrologie et geochimie du bassin soudanosahelien du fleuve. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer that is used solely as a reading device such as nuvomedias rocket ebook. Geology earth science systematic study of the materials that constitute earth, the geological processes that take place on earth, the environment on earth that created by the geological processes, and the. Two field hydrogeological surveys were conducted in 1992 and 20 using hydrochemistry and isotope techniques in the far north region of cameroon which corresponds to the southern part of lake chad basin. Mvondo valentin, kemgang dongmo tchouta, favreau guillaume and ngounou ngatcha benjamin. Hydrologie et geochimie du bassin soudanosahelien du. Niger basin, hydrology, discharge, flow measurement, rating curve. May 01, 2001 read le cordon sableux limaniyagoua, extremenord cameroun, et son role hydraulique, journal of african earth sciences on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Between 6th thand 12 february 20, discharge measurements were carried out on the niger river and selected tributaries in ivory coast and guinea. Welcome to the webpages of the department of hydrogeology at thefriedrichschilleruniversity jena. The pastoral community of minna, capital of niger state, nigeria, is rapidly grorving and. Assessing of the suitability for irrigation water and. Introduction of hydrogeology national chiao tung university. Manual for water level gauging and discharge measurements, discharge. Jul 29, 2019 two field hydrogeological surveys were conducted in 1992 and 20 using hydrochemistry and isotope techniques in the far north region of cameroon which corresponds to the southern part of lake chad basin. However, the irrigated agriculture development can be a threat to the environment in these areas due to multiple soils degradation that can result salinization, sodisation and alkalinization.
Remote work advice from the largest allremote company. 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. Synthese des connaissances hydrologiques et potentiel en. These studies have shown that this formation, which primarily. The aridhumid transition in the sahara and the sahel. 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. Pdf hydrogeology and chemical quality of groundwater in.
The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably groundwater engineering, another name for hydrogeology, is a branch. Hydrogeology and groundwater flow model, central catchment of bribie island, southeast queensland by joanne m. The field of groundwater hydrology and the discipline of hydrogeology have attracted a lot of attention during the past few decades. The geology of niger comprises very ancient igneous and metamorphic crystalline basement. 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. Les principales unites hydrogeologiques reconnues dans le bassin sont. 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. The dataset relates to shallow groundwaters of the quaternary and substratum aquifers that were sampled at the same locations to potentially reveal any temporal variation in the chemical. Le cordon sableux limaniyagoua, extremenord cameroun, et. Cas d etudes hydrogeologiques, hydrochimiques et isotopiques realisees au niger.
Find materials for this course in the pages linked along the left. Their distribution in a swne section reveals successive weathering troughs and bedrock ridges, confirmed by numerous logs and imaged by electrical. Use of geological and hydrogeochemical data to investigate. 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. Shallow groundwater quality evolution after 20 years of. More, this water is the main source of drinking water for the populations, the. Les transformations physiques et chimiques subies par les eaux dans le soussol, sassocient. This is mainly because of the increasing need for high quality water, especially groundwater. Under current climatic conditions, the free aquifer has a natural nega. A marine aerosol input, somewhat modified by rockwater interaction, dominates the groundwater chemistry. 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 arid and semi arid zone, irrigation constitutes one of determinants of agricultural production expansion. Some will enter as interflow just below the surface of the land a very porous horizon shallow flow system.
Andrews jn, fontes jc, aranyossy jf, dodo a, edmunds wma and a. A typical weathering profile on um rocks comprises the following layers. Depressed aquifers highlighted on the cameroon border of lake chad have not yet been closely studied. Mali is a landlocked country, formerly part of the three ancient sahelian empires of ghana, mali and songhai. Discharge measurements at niger river and its tributaries. The dataset relates to shallow groundwaters of the quaternary and substratum aquifers that were sampled at the same locations to potentially reveal any temporal variation in the chemical and. Geosciences free fulltext hydrostratigraphy and hydraulic. Geology and hydrogeology of the iullemeden aquifer system. Uranium geology niger, west africa exploration history. Hydrocarbon, soil, groundwater, contamination, geology, hydrogeology. Hydrodynamic characteristics of the continental intercalaire. Produced and emailed free of charged by the international center, washington, d. 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.
This study was conducted in the region of tahoua the northeastern part of the southern illulemeden sedimentary basin. On the subsequent pages we would like to introduce you to the focus of research and teaching of our department. Contextes geologique et hydrogeologique agritrop cirad. Many of these, and others, can also be accessed through the africa groundwater literature archive. Hydrologie, agroecologie et superficies dinondation dans le delta interieur du niger. This book, written by 15 scientists from 6 countries, clearly demonstrates the extensive range of issues that are dealt with in the field of hydrogeology. The aridhumid transition in the sahara and the sahel during. 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. Read determining the source of nitrate pollution in the niger discontinuous aquifers using the natural 15 n 14 n ratios, journal of hydrology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Notes for hydrogeology anders damsgaard christensen 200622 anders. Discharge measurements at niger river and its tributaries bgr. The niger delta is a sedimentary basin where groundwater recharge is mostly through. This chapter sets out to give a historical overview of the african rain forest from its origins, towards the end of the cretaceous period. The following references provide more information on the geology and hydrogeology of niger.
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. Use of geological and hydrogeochemical data to investigate depressed aquifers in the southern part of lake chad basin lcb, cameroon. During this campaign, static levels and physicochemical parameters ph, temperature, electrical conductivity. Synthese des connaissance hydrologiques et potentiel en ressources en eau du fleuve niger juin 2002 j. Discharge measurements at niger river and its tributaries bagoe, baoule, kouroukele and niandan. At the time of the last glacial maximum, the sahara and sahel regions of north africa were extremely dry. Some will flow over land surface as runoff relatively commonimportant when the ground is frozen. The african rain forest main characteristics of changes. Probably we can welcome you as a guest on one of our events. Hydrogeologische eenheden van het brussels hoofdstedelijk. New records of rainfall show that during the subsequent deglaciation, the transition from.
The purpose of this work is to improve the knowledge of these depressions by combining a dataset derived from geology and hydrochemistry. 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. Chapitre 2 le milieu physique du bassin du fleuve niger. Determining the source of nitrate pollution in the niger. Jackson bachelor of science honours supervisor assoc. 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. Professor malcolm cox queensland university of technology a thesis submitted in partial fulfilment of the requirements for the degree of master of applied science. Most of problems come from of the irrigation water typology, land use characteristics, water. The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably. Hydrogeology ai\id cieviical quality oir gitouniwater in. The areas around the gulf of guinea, in particular from ivory coast to nigeria and especially cameroon, gabon and congo, appear to have been already occupied at this time by wet tropical forest formations mainly composed of angiosperms which were then.1003 1145 593 293 1001 923 763 600 299 771 1145 1218 1255 944 645 285 1369 846 82 693 267 752 632 332 875 91 328 456 59 227 360 1313 1306 1299 278 1455 611 625 78 1279 1072 1261 787 832 182 887 1383