Browsing Earth Sciences by Title

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Baseflow Analysis of Rivers in Lake Tana Sub Basin

Ethiopia, Eastern (Addis Ababa Universty, 2010-02)

The Lake Tana sub basin is situated on the northwestern plateau of Ethiopia at the headwaters of the Blue-Nile basin, west of the Afar depression. The drainage area of the lake is approximately 15,000 square kilometers, ...
Blending of Volcanic Cinder and Natural Gravel for Sub-Base Road Construction, a Case Study of Gelan Asphalt Project, Addis Ababa, Ethiopia

Mesfin, Gebretsadik (Addis Ababa University, 2015-06-06)

Pavement design is aimed for achieving a pavement structure which is economical, comfortable and yet safe to travel by motorist; and which minimizes development of pavement distress features during the design life of the ...
Brittle Fracture and Lake Level Change at Beseka:Main Ethiopian Rift, Metehara Area

Abadi, Berihu (2007-07)

In early 1960’s, the surface area of Lake Beseka was only 3 km2. In 1976, the lake area was estimated at 27.5 km2 and now it covers around 41km2 (Tamiru et al., 2006). The lake gauge height is about 0.71m in 1976 and 5.6 ...
Building Foundation Characterization Analysis: a Case Study in Ayat Area, Bole Sub-City, Addis Ababa, Central Ethiopia

Tadesse Selamawit (Addis Ababa Universty, 2017-05)

The present research study was conducted in North-Eastern part of Addis Ababa, Bole Sub City Bole Ayat area. The main objective of the present research work was to characterize the building foundation material and to ...
Bush Encroachment Mapping Using Supervised Classification and Spectral Mixture Analysis in Borana Rangelands: A Case Study in Yabello Woreda

Mintesnot, Zemenu (Addis Ababa Universty, 2009-07)

Bush encroachment has been among the major threats to the livelihood of Borana pastoralists and their ecosystem. A study was conducted in Yabello district to map bush encroachment using supervised classification and SMA ...
Carbon Dioxide-Water-Rock Interaction and Hydrogeochemical Evolution of Thermal and Cold Ground Waters in Wonchi Crater Lake and Ambo- Woliso area.

Shube, Hassen (Addis Ababa Universty, 2011-05)

Isotopic and geochemical data are used to study the hydrogeochemical evolution of thermal and hypothermal ground waters and CO2-water-rock interaction of ground waters around Wonchi, Woliso and Ambo area. Geochemical ...
Cellular Automata Model Based Urban Sprawl Mapping: A Case of Mekelle City, Ethiopia

Kidane, Berhanu (Addis Ababa Universty, 2017-06)

In Mekelle city, urban growth and rapid urbanization are recognized facts for urban sprawl. This study aims to study the urban land-use change and modeling for the city. Coupling remote sensing, GIS and Cellular Automata ...
Characterization and Evaluation of Structural Permeability of the Northern Lake Abaya Geothermal Field, Southern Main Ethiopian Rift

Gebrewold, Yafet (Addis Ababa University, 2019-05-05)

Lake Abaya geothermal field is located on the axis of the Southern Main Ethiopian Rift (SMER), near the western margin where the plateau transitions into the rift floor. The study area is located approximately 275 km ...
Characterization and Suitability Analysis of Embankment Material for Dam on Berga River, Central Ethiopia

Negash, Tutan (Addis Ababa University, 2013-05-05)

Material quality and suitability is one of the main criteria for the success of embankment dams. Seepage through the embankment, foundation, and abutments must be controlled and collected to prevent excessive uplift ...
Characterization of Aquifers and Hydrochemistry in Volcanic Terrain of Central Ethiopia

Nigatie, Mekdes (Addis Ababa Universty, 2010-06)

This thesis work aimed to characterizing the different aquifer systems and their hydrochemistry of volcanic aquifer in central Ethiopia which encompasses Upper Awash, Jema, Mugher and Guder River basins surrounding the ...
Characterization of Black Cotton Soil from Index Properties Along Sebeta-Tefki Road Section

Mulachew Alemayehu (Addis Ababa Universty, 2005-07)

This MSc thesis work is entitled "Characterization of Black Cotton soil from Index Properties in Sebetta area". The study area located at 32km, Southwest of Addis Ababa in the Oromia regional state; covering an area of ...
Characterization of Major Subsurface Structures in Ada’a Plain Using Intergated Geophysical Survey

Getaneh, Assefa (Addis Ababa Universty, 2007-02)

This manuscript presents the results of geophysical data analysis from Ada'a plane with a primary objective of characterizing major subsurface structures and their connection to the subsurface hydraulic system. Towards ...
Characterization of Selen Wuha Mafic-Ultramafic Massif of Raya Marginal Graben, Northern Ethiopia

Redae, Senay (Addis Ababa University, 2018-05-03)

Ultramafic intrusion is found in Selen Wuha area of Raya marginal graben. Selen Wuha area is located 600km away from Addis Ababa to the northern Ethiopia. Some of the previous researchers were considered it as basement ...
Characterization of the Genesis of Belessa Kaolin Occurrences, Hosaina Area, Central Main Ethiopian Rift

Bedassa, Gemechu (Addis Ababa Universty, 2017-06)

Belessa kaolin occurrence is situated in the Western margin of Central Main Ethiopian Rift (CMER) near Hosaina town which is about 230 km from Addis Ababa. Geology of the kaolin district is composed of Miocene to Quaternary ...
Characterization of the Groundwater Systems and Aquifers in Jerer Valley, Somali Regional State, Eastern Ethiopia

Mukhtar, Mohammed (Addis Ababa University, 2015-06-06)

The Jerer valley which is part of the Shebelle river basin covers an area of 10,816 km2. It is located between the geographical coordinates of 7˚56'79"N to 9˚61'23"N Latitude and 42˚58'04"E and 44˚31'60"E Longitude. The ...
Characterization of the Heat Source of Butajira Geothermal Field Ethiopia: Noble Gas Approach

Sinetebeb, Yared (Addis Ababa University, 2019-05-05)

Butajira geothermal prospect is found in the Central Main Ethiopian Rift (CMER) near the western escarpment where thermal manifestations such as hot springs are aligned along NNE/SSW direction with surface temperature ...
Characterization of the Trend of Urbanization and Associated Natural Hazard Assessment and Analysis: Landslide and Earthquake Problems Along Hill Slope Areas in the Case of A.A City, Ethiopia

Assefa, Temesgen (Addis Ababa University, 2012-06-06)

Every year, in most urban areas, millions of people lost their lives due to natural hazards. The deadliest natural hazards in urban regions have been landslides, earthquakes and floods. In geologically unique regions where ...
Chemical Stabilization of Expansive Sub-grade Soil Performance Evaluation on Selected Road Section in Northeastern Addis Ababa

Solomon, Habtamu (Addis Ababa Universty, 2011-03)

Expansive soils are characterized by volume change due to variation in moisture content. The cyclic wetting and drying processes causes vertical movements in expansive soils and these movements lead to failure of pavements. ...
Comparative Analysis of Climate Variability and Impacts in Central Rift Valley and Adjacent Arsi Highlands Using GIS and Remote Sensing

Feyissa, Getnet (Addis Ababa Universty, 2010-06)

The problem of climate variability is broadly studied currently from various angles that emanate from seriousness of the problem. The most recent is application of satellite image that is analyzed through Remote Sensing ...
Comparative Analysis of the Effects of Land Use/Land Cover Changes on Hydrology and Sedimentation: the Case of Wabeand Meki Catchments, Central Ethiopia

Alemu, Mersha (Addis Ababa University, 2017-08-03)

Wabe and Meki, located in southwestern and central part of Ethiopia, are adjacent catchments and flowing to Omo-Gibe and Rift Valley Lakes basins respectively.The total area coverage for Wabe and Meki catchments are 1763km2 ...

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