Iris: Gps Measuring Plate Motion [Pdf]

This resource looks at how geologists are able to measure the movement of tectonic plates using satellite-based data and how they were able to surmise in the past that the plates were moving. It also discusses how to read GPS time-series plots, how GPS is used in the study of earthquakes and volcanoes, and how GPS actually works. Includes links to external resources and activities, but some links are old and may require a search to locate them.