GEOPHYSICAL DATA HAVE BEEN COLLECTED AT SEVERAL, SOUTHERN GREENLAND ICE SHEET SITES OVER A 30 YEAR PERIOD. THE SITES WERE INITIALLY ESTABLISHED BY THE OHIO STATE UNIVERSITY IN 1980 AND HAVE BEEN REOCCUPIED THROUGH 2005. CONTRARY TO OBSERVATIONS OF SUBSTANTIAL THINNING IN COASTAL AREAS, IN SITU DOPPLER SATELLITE AND GPS MEASUREMENTS REVEAL INCREASING ICE SHEET ELEVATION AT THE CENTRAL SITE. THESE OBSERVATIONS ARE CONSISTENT WITH INDEPENDENT AIRBORNE TOPOGRAPHIC MAPPER DATA AND MEASUREMENTS OF DECREASING VALUES OF ABSOLUTE GRAVITY. HOWEVER, REPEAT MEASUREMENTS OF SURFACE VELOCITY DEMONSTRATE THAT THE SURFACE VELOCITY AT THIS LOCATION ON THE INTERIOR ICE SHEET IS INCREASING. THE VELOCITY OBSERVATION MAY BE EVIDENCE THAT PROCESSES CAUSING THE MARGINS OF THE ICE SHEET TO THIN MAY NOW BE HAVING AN EFFECT ON THE INTERIOR ICE SHEET. WHILE A PORTION OF THE IN SITU DATA HAVE BEEN ANALYZED AND REPORTED UPON, ADDITIONAL DATA REMAIN TO BE REDUCED AND DOCUMENTED AS PART OF THE ARCHIVAL RECORD OF ICE SHEET OBSERVATIONS. WORK TO BE COMPLETED UNDER THIS PROPOSAL WILL INCLUDE ANALYSIS OF ALL REMAINING 2003-2005 DATA COLLECTED AT BOTH THE WESTERN AND CENTRAL OSU SITES. THE ELEVATION TIME SERIES WILL BE EXTENDED AS POSSIBLE BY INCORPORATING ICESAT DATA THROUGH TO END-OF-MISSION. FINALLY, A COMPLETE GLACIOLOGICAL ANALYSIS OF THE DATA WILL BE AIMED AT COMPARING THE BEHAVIOR OF THE INLAND ICE SHEET WITH THE THINNING DOCUMENTED AROUND THE ICE SHEET MARGIN. AS PART OF A FINAL PUBLICATION DESCRIBING ONE OF THE LONGEST TERM OBSERVATIONS OF INTERIOR GREENLAND ICE SHEET SURFACE ELEVATION, GRAVITY, AND VELOCITY, ALL OF THE OSU SITE DATA WILL BE FULLY DOCUMENTED AND REPORTED.