caa a22 4500 445815043 CHVBK 20180317145224.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10040-010-0667-0 doi (NATIONALLICENCE)springer-10.1007/s10040-010-0667-0 Hydrogeology and groundwater flow in a basalt-capped Mesozoic sedimentary series of the Ethiopian highlands [Elektronische Daten] [Ine Vandecasteele, Jan Nyssen, Wim Clymans, Jan Moeyersons, Kristine Martens, Marc Van Camp, Tesfamichael Gebreyohannes, Florimond Desmedt, Jozef Deckers, Kristine Walraevens] Hydrogéologie et écoulement de nappe dans une série sédimentaire coiffée de basalte des hautes terres d'Ethiopie A hydrogeological study was undertaken in the Zenako-Argaka catchment, near Hagere Selam in Tigray, northern Ethiopia, during the rainy season of 2006. A geological map was produced through geophysical measurements and field observations, and a fracture zone identified in the north west of the catchment. A perched water table was found within the Trap Basalt series above the laterized upper Aram Aradam Sandstones. A map of this water table was compiled. Water-level variation during the measurement period was at least 4.5m. Variation in basal flow for the whole catchment for the measurement period was between 12 and 276m3/day. A groundwater flow model was produced using Visual MODFLOW, indicating the general direction of flow to be towards the south, and illustrating that the waterways have only a limited influence on groundwater flow. The soil water budget was calculated for the period 1995-2006, which showed the important influence of the distribution of rainfall in time. Although Hagere Selam received some 724mm of rainfall per year over this period, the strong seasonal variation in rainfall meant there was a water deficit for on average 10months per year. Springer-Verlag, 2010 Hydrogeology nationallicence Groundwater recharge/water budget nationallicence Groundwater flow nationallicence Ethiopia nationallicence Vandecasteele Ine Royal Museum for Central Africa, Leuvensesteenweg 13, 3080, Tervuren, Belgium aut Nyssen Jan Department of Geography, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut Clymans Wim Physical and Regional Geography Research Group, KU Leuven, Redingenstraat 16, 3000, Leuven, Belgium aut Moeyersons Jan Royal Museum for Central Africa, Leuvensesteenweg 13, 3080, Tervuren, Belgium aut Martens Kristine Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut Van Camp Marc Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut Gebreyohannes Tesfamichael Mekelle University, PO Box 231, Mekelle, Ethiopia aut Desmedt Florimond Hydrology Department, Free University of Brussels, Pleinlaan 2, 1050, Brussels, Belgium aut Deckers Jozef Department of Earth and Environmental Sciences, Division for Land and Water Management, KU Leuven, Celestijnenlaan 200E, 3001, Leuven, Belgium aut Walraevens Kristine Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut Hydrogeology Journal Springer-Verlag 19/3(2011-05-01), 641-650 1431-2174 19:3<641 2011 19 10040 https://doi.org/10.1007/s10040-010-0667-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-010-0667-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vandecasteele Ine Royal Museum for Central Africa, Leuvensesteenweg 13, 3080, Tervuren, Belgium aut NATIONALLICENCE 700 1- Nyssen Jan Department of Geography, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut NATIONALLICENCE 700 1- Clymans Wim Physical and Regional Geography Research Group, KU Leuven, Redingenstraat 16, 3000, Leuven, Belgium aut NATIONALLICENCE 700 1- Moeyersons Jan Royal Museum for Central Africa, Leuvensesteenweg 13, 3080, Tervuren, Belgium aut NATIONALLICENCE 700 1- Martens Kristine Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut NATIONALLICENCE 700 1- Van Camp Marc Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut NATIONALLICENCE 700 1- Gebreyohannes Tesfamichael Mekelle University, PO Box 231, Mekelle, Ethiopia aut NATIONALLICENCE 700 1- Desmedt Florimond Hydrology Department, Free University of Brussels, Pleinlaan 2, 1050, Brussels, Belgium aut NATIONALLICENCE 700 1- Deckers Jozef Department of Earth and Environmental Sciences, Division for Land and Water Management, KU Leuven, Celestijnenlaan 200E, 3001, Leuven, Belgium aut NATIONALLICENCE 700 1- Walraevens Kristine Laboratory for Applied Geology and Hydrogeology, Ghent University, Krijgslaan 281-S8, 9000, Gent, Belgium aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/3(2011-05-01), 641-650 1431-2174 19:3<641 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer