Gravity at NGS: Why We Need it and How We Measure It

March 12, 2020  |  2-3 pm, Eastern Time

Derek van Westrum, National Geodetic Survey

NGS will switch to a vertical datum based on geopotential in just a few years. With that in mind, this webinar will describe “geopotential,” how it relates to gravity, and how NGS collects gravity data. Learn about relative vs. absolute gravity, terrestrial vs. airborne gravity, gravity vs. gravity gradient, and more.

Beginner Technical Content Rating: No prior knowledge of this topic is necessary.