Selective Availability Archives

This Day in GIS: May 1

May 26, 2017April 26, 2017 by Caitlin Dempsey

Listed here are significant events in GIS and other geospatial technologies that happened on May 1.

This station contains a combined GPS and seismometer. Photo: USGS geologist viewing the northeastern slope of Mount Hood from Shellrock monitoring station, Liz Westby, USGS Cascades Volcano Observatory. Public domain, July 16, 2015.

What is GPS?

January 2, 2023November 12, 2011 by Rachel Quist

So, what exactly is GPS? How does GPS work?

GPS Resources

February 17, 2021November 12, 2011 by Caitlin Dempsey

Global Positioning System (GPS) is a technology that uses the position of satellites to determine locations on earth. GPS is an essential tool for GIS … Read more