In this study, it aims to analyze the movement and trend of satellite reference station as a part of monitoring for Korean CORS after the Great East Japan Earthquake at 11th March 2011. 9 points in IGS observation network was selected for fixed points based on previous research project. It was processed and analyzed for the accumulated data for 2 years of 4 points; SUWN, TEGN, KANR and CHJU by Bernese V5.0 which is prepared for long baseline analysis.

Keywords: great east Japan earthquake, CORS, KORS, positioning movement, 2 years