Time Series of GPS Stations in the Near East

摘要

For the detailed analyses of the GPS site variations in the east Mediterranean and Arabian area, weekly processed solutions from GPS week 1107 to 1315 (209 weeks) computed by the OLG (Observatorium Lustbuhel Graz) are used. The variations of the site coordinates are processed and analysed to derive patterns about periodic or non-periodic effects of the time series due to environmental influences like varying weather conditions, seasonal changes, plate tectonics etc. First the coordinates of neighbouring stations are compared in order to investigate the influence of the above mentioned effects precisely and to separate them from equipment and adjustment effects. Time series analyses in the frequency domain and velocity estimations of the refined values will be carried out later to extend and confirm the first overview.