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

Data Visualizations

The USArray Ground Motion Visualization (GMV)

Latest Major Earthquake Information

Magnitude 7.2 - South Sandwich Islands

Key Announcements

Update from IRIS President Bob Detrick – Spring 2016
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IRIS Issues Strategic Plan
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Donate to the David Simpson Fund for Innovation
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IRIS Staff Answers Questions on AskScience’s “Ask Me Anything”
IRIS staff members Wendy Bohon and Danielle Sumy responded to dozens of interesting questions about earthquakes and seismology during a "Ask Me Anything" session on Reddit's AskScience.
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IRIS to Conduct Wavefields Demonstration Community Experiment
This community experiment will take place in northern Oklahoma this summer and will make use of cutting-edge three-component nodal-type sensors.
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New Video on the Himalaya and the 2015 Nepal Earthquake
IRIS has created a short video that discusses the evolution of the Himalaya and the Nepal earthquake that occurred on April 25, 2015.
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Remembering Adam Dziewonski
IRIS and the seismological community mourn the loss of geophysicist Adam Dziewonski who passed away on March 1 at age 79.
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Results Explain Mystery of the Bighorn Mountains
Data from the EarthScope-funded Bighorn Arch Seismic Experiment, which was acquired by several hundred sensors across Wyoming and Montana in 2010, sheds light on the formation of this puzzling feature.
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Check Out the Special Event Web Page on the N. Korean Nuclear Test
More information will be added to the web page as it becomes available.
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EarthScope Magnetotelluric Transportable Array Reaches the Atlantic Ocean
The EarthScope USArray Magnetotelluric Transportable Array (MT-TA) reached a major milestone when it installed a station in Jekyll Island, Georgia. This is the first MT-TA station to reach the Atlantic coast.
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View Past IRIS News

Recent Major EarthquakesRSS

May 28, 2016
South Sandwich Islands - 7.2

April 28, 2016
Vanuatu - 7.0

April 16, 2016
Near the Coast of Ecuador - 7.8

April 15, 2016
Japan - 7.0

March 2, 2016
Indonesia - 7.8

Full Lists of Recent Earthquakes USGS

PASSCAL/Flex Array Experiments RSS

Lake Pontchantrain
A very strong 1-3 second signal has been observed in at the former TA station 585B located in Laplace, LA... Read more

Noise Surv. of W. Kaz.
This project will conduct noise surveys at up to ten locations in western Kazakhstan... Read more

RIS deformation - NZ - A
The response of the Antarctic ice sheet to global warming will have a big impact on global sea level, ocean circulation and climate... Read more

I would like to have three surface mounted seismometers (Sercel L-28-3D High Frequency Sensors) to measure in conjunction with our studies on downslope flow (linked to - but separate from - my other PASSCAL instrumentation project)... 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