USArray Consists of Four Observatories

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

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

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

View Photos from the 2010 IRIS Workshop in the Image Gallery

Nearly 150 photos taken during the IRIS Workshop held June 9-11, in Snowbird, Utah, are now posted in the IRIS Image Gallery. Read More

Michael Hubenthal Recognized for Educational Poster Research

Michael Hubenthal, IRIS Education Specialist, receives praise for his research on educational posters from Binghamton University. Read More

The EarthScope Automated Receiver Survey (EARS) Data Product Now Available at the IRIS DMC

The EarthScope Automated Receiver Survey (EARS) is now implemented at the IRIS Data Management Center. Developed by the University of South Carolina as an EarthScope/USArray data product, EARS calculates bulk crustal properties at IRIS station locations using receiver functions. Read More