1. Remote GPS in Antarctica
Andrea Donnellan and Bruce Luyendyk
Thanks to: Mark Smith, Tom Rebold, Henry Awaya, Demetri Capetanopoulos, Russell Knight, Shannon Jackson, Alan Hogan, Charles Day, and Timothy Stough. Kenneth Hurst for data processing and Donald Argus for the plate rotation. Eric Ivins for discussions of postglacial rebound modeling. Supported by US NSF OPP and NASA.

2. Location maps

3. Post Glacial Rebound The thick ice sheet pushes down on the earth
As the ice thins the mantle flows back
The surface of the earth rebounds

4. Ford Ranges from the air

5. At Siple Dome…

6. Installing MBL1 Rockefeller Mountains

7. MBL1, Mt. Patterson, Rockefeller Mts., Marie Byrd Land
Antenna is still in place…

8. Length time series; wrt Davis, McMurdo
MBL3 data not used for 2002

9. Absolute Horizontal Velocities

10. Residual Horizontal Velocities
Plate rotation about Davis removed

11. Vertical time series
MBL3 data not used for 2002

12. Vertical Velocities

13. Conclusions so far…
No horizontal strain >2 mm/yr in wMBL, across Ross Embayment, or between WANT and EANT
Vertical motion due to rebound since late Holocene retreat - load was in east Ross Sea
Continuous power source is key to continuous GPS
Steve Tucker