GSN seismic station recorded the sounds of Hurricane Maria

Newly installed infrasound sensors at a GSN station on Puerto Rico recorded the passage of Hurricane Maria. Continue Reading

IRIS Joins NASA to Engage the Public about the Mars InSight Mission

IRIS Seismology Education & Outreach Specialist Tammy Bravo (third from right) poses with the NASA Mars InSight Team prior to the launch. Continue Reading

Take a Peek at a Day in the Life of an IRIS Seismologist

IRIS Seismologist Kasey Aderhold shares the excitement of her work to discover more about earthquakes, including field work in Alaska. Continue Reading


Oct 30-31 Seismic Instrumentation Technology Symposium 2018 Tucson Marriott University Park, Tucson, AZ, USA
Oct 4 IRIS/SSA Distinguished Lectureship Series OMSI Science Pub, McMenamins Mission Theater
Oct 17 IRIS/SSA Distinguished Lectureship Series Cleveland Museum of Natural History (Cleveland,Ohio)
Nov 13 IRIS/SSA Distinguished Lectureship Series American Museum of Natural History (New York,New York)
Nov 30 IRIS/SSA Distinguished Lectureship Series Southwestern Oregon Community College
Earthquake Resources

New Animation! Why do earthquake magnitudes change?

Obtaining an accurate preliminary magnitude can be difficult due not only to the complex processes that occur deep within the Earth but because there are over a dozen techniques of for calculating the magnitude of an earthquake. In this animation we look at two magnitude scales, and use two examples of magnitude changing.

Navigating IRIS Educational Products

The IRIS website has 300+ resources for teaching and learning about earthquakes, geology, geophysics & earth systems. This tutorial can help you find, filter, and share these resources! 

Highlights from the Field

Highlights from the Field

Students from UNR conduct geophysical research on a former nuclear test site using 30 Texans with 4.5 Hz vertical geophones from the PASSCAL Instrument Center. Using this equipment the class recorded two deep refraction microtremor arrays 2 km long, centered across ground zero.
Seismic Reawakening along the South-Central Chile Megathrust Boundary

Seismic Reawakening along the South-Central Chile Megathrust Boundary

Using GPS to examine regional changes in the earth’s surface with time, and seismology to understand the rupture process and stress changes associated with nearby earthquakes, researchers are seeking to understand the “reawakening” of the megathrust boundary along the west coast of Chile.
Seismometer Readings Could Offer Debris Flow Early Warning

Seismometer Readings Could Offer Debris Flow Early Warning

Researchers at Caltech investigate whether seismometers in the field could be used to provide an early warning of an incoming debris flow to residents in mudslide-prone areas.