Subtleties of Estimating Scale Changes in Regional GPS Networks and Their Impact on Height Estimates.

Thomas Herring1, Timothy Ian Melbourne2, Mark H Murray3, Michael Floyd1, Walter Michael Szeliga2, Walter Michael Szeliga2, Robert W King4, David A Phillips5 and Christine Maria Puskas6, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)Central Washington University, Ellensburg, WA, United States, (3)New Mexico Institute of Mining and Technology, Socorro, NM, United States, (4)MIT, Cambridge, MA, United States, (5)UNAVCO, Inc. Boulder, Boulder, CO, United States, (6)UNAVCO, Inc., Boulder, CO, United States