IRIS PASSCAL to Expand Pool of Seismic Instruments

IRIS has begun the procurement of 460 Fairfield nodes for general PASSCAL pool use. The new nodes should be ready for general usage starting in February 2019 (bringing the general node pool to 533 units). Continue Reading

IRIS Station Monitor App now available!

Explore earthquakes near you or around the world using the new IRIS Station Monitor app! Available for both Android and iPhone! Continue Reading

USArray in the news!

USArray Transportable Array science featured in exciting Accuweather video special feature! Continue Reading


Apr 11 Educators - Learn about Earthquakes at NSTA St. Louis
Apr 17 2019 Spring BoD Meetings Washington, DC
Nov 13 2019 Fall BoD Meetings Fort Collins, Colorado
Earthquake Resources

¡Animación de la tectónica de placas ahora en español!

Placas Tectónicas: ¿Que son las Placas (litosféricas) tectónicas?

NEW IRIS Ed publication!

Exploring undergraduates’ conceptions of elasticity, within a plate tectonics context, before and after experience with rock’s elastic behavior

A subduction zone in pieces: the segmented Cascadia megathrust

A subduction zone in pieces: the segmented Cascadia megathrust

Onshore and offshore seismic data informs researchers working on megathrust boundaries, improving our understanding of where subduction zone earthquakes might occur and why.
Quaking beneath the ice

Quaking beneath the ice

The geology of East Antarctica lies hidden below many kilometers of ice, and presents a fascinating and complex problem for geologists. Historically, very few earthquakes have been recorded in Antarctica but data from a new seismic array has allowed scientists to detect earthquakes below the ice, and their results directly contradict the notion that Antarctica is seismically and tectonically inactive.
Tiny Northwest Quakes Tied to Deep-Crust Structure

Tiny Northwest Quakes Tied to Deep-Crust Structure

Rice University researchers found a strong correlation exists between tremor density and underthrusting sediments at the Cascadia margin off the Pacific Northwest’s coast. Fluids that are released from the downgoing slab are concentrated in these sediments and lead to very slow seismic velocities in the region.