GRAV-D

GRAV-D Informational Materials




One-Page Fact Sheets


pdf   NGS GRAV-D Project One-Pager


Educational Materials


ppt   NGS Gravity and Geoid Brown Bag Lunch Talk, January 19, 2010. "Geoid Computations At NGS: Where Are We And Where Are We Going?"

ppt  NGS Gravity and Geoid Brown Bag Lunch Talk, December 1, 2009. "GRAV-D on the Airfield: How we accomplish airborne gravity data collection." Also download these movies to view the entire presentation: Movie 1 (2Mb, gravimeter sensor self-leveling);  Movie 2 (186Mb, landing the NOAA Cessna Citation on St. Thomas, VI)  

ppt   NGS Gravity and Geoid Brown Bag Lunch Talk, November 3, 2009. "Airborne Gravity Processing 101"

html  NOS Diving Deeper podcast featuring NGS' Dr. Dru Smith on "Geodesy", including what the science studies and how NGS' geodetic products are used.

mp3   NOS Diving Deeper podcast featuring NGS' own Renee Shields, discussing Height Modernization.

html  NOS Making Waves podcast with NGS' Dr. Dru Smith discusses "Building a Better Geoid", including why GRAV-D is important to the nation and the reasons behind conducting the 2011 NGS Geoid Slope Validation Study in Texas.


Scientific Presentations


ppt   FEMA Briefing on the NSRS and GRAV-D, September 15, 2009.

ppt   GRAV-D Project Update presentation to the International Association of Geodesy conference in Buenos Aires, Argentina, September 2, 2009.

* Up-to-date NGS presentations on all projects, including GRAV-D, are available on the official NGS Presentations Library.

* An older list of presentations about the geoid can be found here for a range of audiences.


Popular Media Articles

Please verify facts in these articles with the GRAV-D program before reprinting or reusing this information.

html "National Geodetic Survey Seeks Participants for Kenematic GPS Challenge" GPS World, August 17, 2010.

html "Fixing the Flaws in North American Maps" Government Computer News, July 7, 2009. By William Jackson.

html "GRAV-D has the potential to provide very significant benefits to the public." Interview with Dr.Dru Smith of NGS, Coordinates Magazine. Dec. 2010.


Photo Gallery


Under development