The IRIS Earth Model Collaboration (EMC) Horizontal Slice Viewer.

Data Visualizations

The USArray Ground Motion Visualization (GMV)

Latest Major Earthquake Information

Magnitude 7.9 - Rat Islands, Aleutian Islands, Alaska

Key Announcements

Download Plenary Presentations from the IRIS Workshop
Read More

David Simpson Fund for Innovation Launched
Read More


Two Universities Join IRIS as Foreign Affiliate Members
IRIS is pleased to welcome two new Foreign Affiliates during May, the University of Oxford and the Tokyo Institute of Technology.
Read More

IRIS Project Associate Andy Frassetto Blogs about Inspiration from USArray
The Bridge, one of the American Geophysical Union's blogs, invited Andy Frassetto to share his thoughts on how EarthScope and USArray are inspiring the next generation of seismologists.
Read More

Watch Seismologists Install a Seismic Station in Antarctica
A team of seismologists recorded a few short videos as they deployed a seismic station in the Transantarctic Mountains.
Read More

Thirty years ago, on May 8, 1984, the Incorporated Research Institutions for Seismology was formally certified as a 501(c)(3) non-profit corporation in the State of Delaware, organized exclusively for educational and scientific purposes.
Read More

IRIS Bids Farewell to PASSCAL Program Manager James Gridley
James Gridley will be leaving IRIS to join Pinnacle, part of Halliburton, as the company’s Geophysics Adviser and Chief Technical Adviser in their largest production service line, Production Enhancement.
Read More

New Animations Focus on Megathrust Earthquakes and Alaska
In recognition of the 50th anniversary of the magnitude 9.2 Great Alaska Earthquake of March 27, 1964, IRIS offers a set of three animations made in collaboration with the U.S. Geological Survey and the Alaska Earthquake Center.
Read More

View Past IRIS News

PASSCAL/Flex Array Experiments RSS

Blood Falls
On Taylor Glacier, as part of a past study we discovered seasonal seismicity localized on the crevasse out of which the unique Blood Falls feature flows, accompanying ground penetrating radar suggests that this feature is underlain by a fault in the subglacial material... Read more

ENAM aka ENAM Cape Hatteras
Small set of three stations, to be deployed on the outer banks of North Carolina, as part of the broadband component of the ENAM community experiment... Read more

The Long Beach Broadband seismic experiment aims to image the deep structure of the Newport-Inglewood Fault Zone (NIFZ) in and around the Long Beach oil field... Read more

Box Canyon
A 2.5-3 km long seismic line, with 10 meter geophone spacing (240 x 10 meter takeouts, 48-60 x 5 meter takeouts), to image the San Andreas Fault, with explosive and Betsy seisgun sources. Read more

Map of PASSCAL Experiments
Current and future experiments.

EarthScope / USArray Status

USArray Map
Earthscope Click the map above for a more detailed view.

USArray Homepage