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

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USArray Status

USArray Status

USArray News

Hundreds of Sensors Deployed to Image Socorro Magma Body

Tue, 12 May 2015 09:59:00 -0400

PASSCAL staff assisted Principal Investigators with the installation of hundreds of sensors to image the Socorro Magma Body beneath the Sevilleta National Wildlife Refuge in central New Mexico.
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USArray Featured in Canada’s Leading Newspaper

Tue, 05 May 2015 11:08:00 -0400

The article in The Globe and Mail highlights how data from EarthScope seismic stations in the US and Canada are being used to better understand the structure of the North American continent.
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IRIS and UNAVCO Boards of Directors Submit ‘Guiding Principles’ Letter to NSF

Fri, 01 May 2015 16:10:00 -0400

The letter describes key attributes and characteristics that have made the seismic and geodetic multi-user facilities so successful and should be incorporated into the upcoming Request for Proposal.
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