A plate motion study using Ajisai SLR data

摘要: Eight years of Ajisai SLR data were processed to determine the terrestrial reference frame and its time evolution. The typical precision accuracy estimated geocenter position averaged over a year determined from one-year set are 1 cm 1.5 cm, respectively. baselines between stations away plate bou-ndaries show rates change that in good agreement with NUVEL-1A, ITRF93 LAGEOS results but significant deviations geologically motion models found for boundary regions. Velocities observation by weighted least squares method. Simosato station, located 100 km Eurasian Philippine Sea plate, move-s direction subduction respect which infers strong coupling two plates at boundary. other regions is also discussed. This study first attempt use global variation, thus independent previous studies most based on analyses.