The National Oceanic and Atmospheric Administration (NOAA) of the US government has developed specialist software that will help keep GPS surveying equipment up-to-date with the shifting of tectonic plates in continental North America. The agency’s National Geodetic Survey (NGS) has developed horizontal time-dependent positioning (HTDP) software, which allows for the estimation of horizontal velocities on the continent’s surface. These can occur during earthquakes or imperceptibly over time. Read More
