Key Announcements

Register for the 2014 IRIS Workshop, June 8-11, in Sunriver, Oregon
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Remembering Jim Fowler - Upcoming Events
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Register Now to Participate in the Active Uses of Passive Seismic Data Meeting, June 3, Houston, TX
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Join Us for an EarthScope Symposium and Reception, May 15, in Washington, DC
The event will provide an overview of the scientific discoveries that EarthScope has achieved over the last 10 years as well as a panel discussion highlighting its broader impacts. State-of-the-art EarthScope equipment will also be on display.
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IRIS-EarthScope USArray Data Processing and Analysis Short Course - APPLY NOW!
Applications are being accepted through May 5. The course will be held at Northwestern University in Evanston, Illinois from August 4-8, 2014.
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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.
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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.
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Seismology Community Mourns the Passing of Jim Fowler
With a very heavy heart, we say farewell to Jim Fowler, who passed away on February 25, 2014.
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View Past IRIS News

Recent Major EarthquakesRSS

April 19, 2014
Papua New Guinea - 7.5

April 18, 2014
Guerrero, Mexico - 7.2

April 12, 2014
Solomon Islands - 7.6/7.4

April 11, 2014
Papua New Guinea - 7.1

April 3, 2014
SW of Iquique, Chile - 7.6

Full Lists of Recent Earthquakes USGS

PASSCAL/Flex Array Experiments RSS

2-D seismic refraction survey, sledge hammer source, on NMT campus for an introductory geophysics course. 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

This experiment will acquire a family of geophysical, geochemical and geological observations in and around northern Lake Malawi to test fundamental hypotheses regarding continental rupture... Read more

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

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