Earthquake Activity

Large international seismic networks such as the Global Seismic Network (GSN) allow SASO scientists to maintain a constant watch over the seismic activity of the entire planet. The maps displayed below represent a sampling of the most recent seismicity of the world, and the Western United States.

Map of Global Seismicity
This is a USGS map of the world displaying the seismicity of the planet for the last week as reported by the National Earthquake Information Center.

Maps of United States and NE Pacific Rim Seismicity
This is a USGS map showing the last 10 days of seismicity for the Western United States

USGS List of Recent Earthquakes

Furthermore, SASO operates the IRIS/NSN very broadband seismic station TUC, which is located in the Santa-Catalina Mountains. Once transferred from the remote site to our data processing center at the University of Arizona, data from TUC is made available to researchers around the world in near-real time through the IRIS Data Management Center (DMC). SASO also makes data available through our World Wide Web Page.

There are three data products available from this site.

Current TUC Data
View the last 24 hours of data recorded at station TUC, Tucson, Arizona.