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

Data Visualizations

The USArray Ground Motion Visualization (GMV)

Latest Major Earthquake Information

Magnitude 7.0 - Vanuatu

Key Announcements

IRIS Issues Strategic Plan
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Donate to the David Simpson Fund for Innovation
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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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USArray Short Course Was a Huge Success
Twenty-eight students from 26 institutions participated in this year’s IRIS-organized short course on USArray data processing that was hosted by Indiana University in Bloomington.
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View Past IRIS News

Recent Major EarthquakesRSS

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

January 30, 2016
Kamchatka, Russia - 7.2

Full Lists of Recent Earthquakes USGS

PASSCAL/Flex Array Experiments RSS

Yucca Valley
A 3 km long line, 5 meter spacing, using seismic refraction and reflection to look for buried faults Read more

Deploy 3-component seismic instruments at ~240 closely spaced sites in the Brady Hot Springs geothermal field near Fernley, NV, for approximately 2 weeks to record ambient noise and active-source data during changes in fluid pumping in the geothermal reservoir. Read more

Mcmurdo Shear Zone Dynamics
The overall goal of this project is to understand the role of lateral shearing on the flow and stability of ice shelves... Read more

NW Uganda
A 10-station broadband network will be deployed for 18 months to investigate upper mantle structure and anisotropy as it related to plume-lithoshpere processes. 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