USArray
A Continental-scale Seismic Observatory

Featured Deployments

Mid-Atlantic Geophysical Integrative Collaboration (MAGIC)

Mid-Atlantic Geophysical Integrative Collaboration (MAGIC)

MAGIC involves a collaborative effort among seismologists, geodynamicists, and geomorphologists. We are undertaking a two-year deployment of 28 broadband seismometers in a dense linear transect from the Atlantic coast to the continental interior. In combination with EarthScope USArray Transportable Array (TA) stations our experiment geometry will provide an opportunity to image isotropic and anisotropic crust and mantle structure from the coast to the continental interior in unprecedented detail, using techniques such as shear wave splitting, receiver function analysis, and tomographic inversions. Read More

Imaging Magma Under St. Helens (iMUSH)

Imaging Magma Under St. Helens (iMUSH)

This project focuses on the Mount St. Helens volcanic edifice, (WA, USA), whose explosive eruption in 1980 attracted the world's attention, and was the first volcano to be thoroughly monitored with modern instruments. Mount St. Helens provides an ideal setting to apply state-of-the-art geophysical and geochemical techniques to image its subterranean roots: It is active, easily accessible, and has a well recorded past history. Read More

SUwanee Suture and GA Rift basin experiment (SUGAR)

SUwanee Suture and GA Rift basin experiment (SUGAR)

Investigators are using travel-time tomography to create velocity models that reveal the distribution of igneous rocks, variations in the thickness of the crust and variations in crustal composition. Besides a better understanding of fundamental tectonic processes, other benefits of this program include training and education of students, and characterization of basins and igneous rocks that might be good targets for carbon sequestration. Read More

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USArray Status

USArray Status

USArray News

IRIS Issues Strategic Plan

Thu, 16 Jul 2015 11:44:00 -0400

The IRIS Board of Directors along with IRIS Senior Management, Program/Project Managers, and Standing Committee Chairs have developed a Strategic Plan that summarizes the vision, mission, and goals which will guide the organization to 2020 and into the future.
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Geophysics Community Seeks Comments on Draft Report by July 20

Tue, 07 Jul 2015 10:39:00 -0400

The writing committee welcomes your feedback on the working draft of the report Future Geophysical Facilities Required to Address Grand Challenges in the Earth Sciences.
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IRIS and Latin American Network Operators Meet in Chile

Tue, 30 Jun 2015 12:04:00 -0400

IRIS recently partnered with the Chilean National Seismic Network to host a workshop in Santiago concluding efforts following the 2010 Maule earthquake.
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