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|Title: ||THERMAL MAPPING AND LINEAMENT ANALYSIS OF ABIYATA AND LANGANO LAKES REGION IN CENTERAL ETHIOPIAN RIFT SYSTEM|
|Authors: ||BINYAM, TESFAW|
|Advisors: ||Dr. Balemwal Atnafu|
|Copyright: ||2007 |
|Date Added: ||11-Dec-2008 |
|Publisher: ||Addis Ababa University|
|Abstract: ||Land surface temperatures are important in global change studies, in estimating radiation budgets in heat balance studies and as a control for climate models. Land surface temperature with the integration of lineament analysis can also determine ground water occurrence and flow directions in arid and semi arid regions. In this study, determination of land surface temperature and lineament mapping has been carried out using remote sensing and GIS in areas of Lake Abijata and Lake Langano regions in the central part of the main Ethiopian Rift, which lies 180 km south of Addis Ababa. This area is exhibited by high temperature and a step faults or lineaments.
The main objectives of this study are producing maps of thermal manifestations at Langano and Abijata Lake regions, Lineament density mapping with respect to Ground water occurrence and comparative Analysis of Lineaments with that of thermal manifestations. The thermal mapping that has been carried out using the image of LANDSAT ETM+ shows a range of 287 to 311 degree Kelvin: based on this result the highest temperature is on the north top and western side of lake Langano which is the discharge area of the hot thermal springs from the eastern high lands of the main Ethiopian rift system. This area might be the best are for hydrothermal activity point of view. The eastern high land of the central main Ethiopian rift also reveals a high density and a number of intersections in lineaments, which is determined using the application of VBA (Visual basic for Application) macros in ArcGIS software, these lineament density maps with the chemistry of groundwater and orientation maps tell us where the ground water flows and where to construct productive wells in the study area as well as in the main Ethiopian rift system.|
|Description: ||A THESIS SUBMITTED TO THE SCHOOL OF GRADUTE STUDIES ADDIS ABABA UNIVERSITY IN PARTIAL FULFILMENT OF THE REQUIRMENTS FOR THE MASTERS OF SCIENCE DEGREE IN REMOTE SENSING AND GIS|
|Appears in:||Thesis - Earth Sciences|
Thesis - Earth Sciences
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