USArray
A Continental-scale Seismic Observatory

Featured Deployments

Bighorns Mountains of Wyoming: Formation of Basement-involved Foreland Arches

Bighorns Mountains of Wyoming: Formation of Basement-involved Foreland Arches

This three year (2009-12) collaborative project will integrate arch-scale upper crustal geometries from surface exposures and petroleum industry subsurface data with the results of a hybrid seismic experiment. The passive component of this experiment consists of a 1.25 year (2009-10) deployment of 27 broadband seismometers that densify the EarthScope transportable array, a 6.5 month deployment of 220 short period seismometers, and a 9 day deployment of 800 high frequency "Texan" seismometers. Read More

Batholiths Onland 2009

Batholiths Onland 2009

In July 2009, several IRIS/PASSCAL scientists assisted with the Batholiths Onland project. This large group effort involved over 50 scientists and grad students, for the purpose of making "a seismic refraction and wide-angle reflection survey across the Coast Mountains batholith of British Columbia, Canada." Read More

Array of Arrays: Elusive ETS in the Cascadia Subduction Zone

Array of Arrays: Elusive ETS in the Cascadia Subduction Zone

The Array Operations Center supported research by the UW team, staging out of Sequim, Washington in June 2009. Eight arrays, each consisting of 10 Texan (single channel) and 10 RT130 (triple channel) data recorders were deployed across the northern Olympic Peninsula in hopes of catching the next Episodic Tremor event. Read More

View All Featured Deployments

USArray Status

USArray Status

USArray News

Download Plenary Presentations from the IRIS Workshop

Thu, 03 Jul 2014 16:36:00 -0400

Presentations from the plenary sessions and contributed Science Highlights are now available.
Read More

IRIS Project Associate Andy Frassetto Blogs about Inspiration from USArray

Tue, 13 May 2014 11:19:00 -0400

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

Register for the 2014 IRIS Workshop, June 8-11, in Sunriver, Oregon

Wed, 05 Mar 2014 11:10:33 -0500

Make plans to attend the IRIS Workshop. Registration and program information are available on the Workshop web page.
Read More