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A Study for Earthquake Parameter of Odaesan Earthquake  

Kim, Jun-Kyoung (Dept. of Resources & Geotechnics Eng., Semyung University)
Publication Information
The Journal of Engineering Geology / v.17, no.4, 2007 , pp. 673-680 More about this Journal
Abstract
The seismic source parameters of the Odaesan earthquake on 20 January 2007, including focal depth, focal mechanism, magnitude, and source characteristics, are analysed using seismic moment tensor inversion. The Green's function for different 3 crust models representing the southern Korean Peninsula are used. Final results show that the event, considering 6 seismic moment tensor elements, is caused by the typical strike slip fault with nearly NNE strike. The focal depth is estimated to be about 11km and 6 seismic moment tensor elements with 7.2% CLVD value shows typical double couple seismic source. The consistent characteristics of the strike and epicenter of the event with Odaesan fault imply that Odaesan earthquake is mainly caused by movement of the Odaesan fault.
Keywords
moment tensor source representation theorem; double couple force;
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