Abstract In this paper, three main factors which directly influence the precision of determining the epicentral azimuth, namely ground-motion type, time window length and filter band, are analyzed by the polarization analysis method, based on part of KiK-net strong motion data. Results show that azimuth determined by ground displacement is outstanding compared to that determined by ground acceleration and ground velocity. Meanwhile, with calculation-time window to be valued around 1 s and filtering band to be valued between 0.1-20 Hz makes the epicentral azimuth determination results best. The results of 45-degree deviation percentage can be 88%.
FAN Tao,LI Shanyou,CHEN Zhigao et al. Analysis of Factors Impacting Polarization Analysis Method in DeterminingEpicentral Azimuth Based on Data from KiK-net[J]. jgg, 2019, 39(2): 215-220.
FAN Tao,LI Shanyou,CHEN Zhigao et al. Analysis of Factors Impacting Polarization Analysis Method in DeterminingEpicentral Azimuth Based on Data from KiK-net[J]. jgg, 2019, 39(2): 215-220.
