Slide 1 GRAV-D G ravity for the R e-definition of the A merican V ertical D atum Slide 2 Why this briefing? NGS recently acquired a new airborne gravimeter –Intended to…

GRAV-D Gravity for the Re-definition of the American Vertical Datum Ronnie L. Taylor Chief, State Advisor Branch 1315 East West Highway, RM 9557 Silver Spring, Maryland 20910…

Upcoming replacements for NAD83, NAVD88 and IGLD85 Dru Smith, NGS Richard Snay, NGS Thomas Landon, NGS Outline History of North American Datums Current Issues Canadian and…

Subsidence Monitoring and the GRAV-D project Dru Smith, Dan Roman, Daniel Winester, Mark Eckl NOAAâs National Geodetic Survey Subsidence Workshop - Geodetic Monitoring Techniques…

GRAV-D Gravity for the Re-definition of the American Vertical Datum Why this briefing? NGS recently acquired a new airborne gravimeter Intended to support GRAV-D GRAV-D is…

Subsidence Monitoring and the GRAV-D project Dru Smith, Dan Roman, Daniel Winester, Mark Eckl NOAA’s National Geodetic Survey Subsidence Workshop - Geodetic Monitoring…