So what does gravity have to do with land surveying? The answer to that question as well as a brief overview of the historical development of gravity’s measurement over the past 450 years is discussed in Part One of Gravity’s Increasing Gravitas.
Click on the image to the right to download the PDF; file size: 8 MB
Collectively, both parts one and two are intended to underscore the singular importance of gravity in making accurate determinations of orthometric heights and to provide an educational outreach for the advancement of the coming geometric datum and height modernization presently slated for the year 2022 by NGS.
Part Two of Gravity’s Increasing Gravitas focuses on the gravity surveys conducted in the United States by the U.S. Coast & Geodetic Survey and the National Geodetic Survey with particular emphasis on the current airborne gravity surveys underway by NGS and its GRAV-D program.
Click on the image to the right to download the PDF; file size: 8.75 MB