Dynamic Parameters Determination of Amery Ice Shelf Using PPP

The main activities of joint Amery ice shelf expedition between China and Australia are introduced. Five days continuous GPS observation data collected on one site of Amery ice shelf was post-processed with precise point position (PPP) technology based on precise ephemeris of IGS. Dynamic characteristic of the surface ice of Amery can be derived from PPP solution. Preliminary derived velocity of the site and the motion direction is given in the paper. Semidiurnal oceanic tide and diurnal oceanic tide signal of that site can be achieved from the height variation series of PPP solution. The above solution can be used to the consequent mass balance calculation.