Msabi, Michael Mwita2019-11-232020-01-072019-11-232020-01-072010Msabi, M. M. (2010) Seismic source zonation for the northern Tanzania divergence, Master dissertation, University of Dar es Salaam, Dar es Salaamhttp://localhost:8080/xmlui/handle/123456789/1745Available in print form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF QE539.2.S34M72)Results on the study of active fault mapping and characterisation of seismic sources along the North Tanzania Divergence (NTD) are hereby reported. The study involved fault identification, testing of their activeness and characterisation. By using aeromagnetic data, the study has uncovered new faults within the Manyara basin. The uncovered faults are mainly trending NE-SW oblique to the Manyara main border fault, forming a fault zone. Based on well located earthquakes within NTD, three active faults were delineated. Two are located within the Natron basin, i.e., the NE-SW trending Gelai fault and E-W trending fault under Lake Natron, and one in Eyasi basin, i.e., NW-SE trending fault almost perpendicular to the Eyasi border fault. The located earthquakes have also marked four blocks of high seismic activity. The marked blocks are Manyara basin, Balangida, Kondoa and KwaMtoro. Based on criterion for seismic source characterisation, such as fault lateral extent and orientation, earthquake focal depths, stress orientation and maximum observed magnitude, the study have characterised seismic sources along NTD into two. These are three faults in Natron and Eyasi basins, and four fault zones in Manyara basin, Balangida, Kondoa and KwaMtoro.enSeismic hazard analysisEarthquake hazard analysisSeismologyTanzania, northernThesis