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Summary of Proposal GEO1001

TitleGeological hazards assessment based on DInSAR data in the main part of Ethiopian Rift Valley
Investigator Knospe, Steffen - Clausthal University of Technology, Inst. of Geotechnical Engineering
Team Member
Dr. rer. nat. Knospe, Steffen - Clausthal University of Technology, Institute of Geotechnical Engineering and Mine Surveying
M.Sc. Beyene, Fasil - Clausthal University of Technology, Institute of Geotechnical Engineering and Mine Surveying
Prof. Dr.-Ing. Busch, Wolfgang - Clausthal University of Technology, Institute of Geotechnical Engineering and Mine Surveying
SummaryThis research targeted to address the impact of geological and related geophysical hazards of volcanoes, earthquakes, landslides, ground cracks and land subsidence that claim many of lives, injure many more, devastate homes and destroy livelihoods every year. The impact is very serious in developing countries like Ethiopia where there is lack of proper disaster management practices. Generally, this data proposal is to support research in the field of geological hazards assessment that will improve mapping, monitoring and forecasting, based on radar satellite and ground-based observations. This research attempts to measure precisely the level of deformation by concentrating on carefully selected and currently increasing geohazards areas. The TerraSAR-X image taken from different Line-of-sight (LOS) will be combined to get the 3D deformation measurement with high accuracy and high spatial coverage. To achieve this, several interferograms will be analyzed by using differential radar Interferometery and finally combined by using SBAS adjustment technique. Due to the advantages of high temporal and spatial resolution of TerraSAR-X data, this project targets to perform detailed deformation monitoring tasks especially in a landslide affected area. By applying repeat-pass interferometry, large-scale movements of and changes to the surface of the Earth will be detected and monitored with high level of accuracy. The deliverables of the projects includes detection of ongoing surface movements, deriving 3D-deformation, hazard zones/ risk maps of the study area. The results of DInSAR analysis will be compared with ground based measurements. This data proposal is to support research funded by the DAAD, Deutscher Akademischer Austausch Dienst and Institute of Geotechnical Engineering and Mine Surveying, Technology University of Clausthal, Germany. The Co-Investigator Fasil Beyene has 3 years scholarship award by DAAD during his stay in Germany starting from April 1, 2010. He has also a support for field works expenses from the local company called GeoMark Systems Plc., Ethiopia. The Institute of Geotechnical Engineering and Mine Surveying, TU-Clausthal will cover the cost of the TerraSAR-X data required for the project.

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