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

Western Idaho Shear Experiment Completes 2nd Phase of Station Installation

This EarthScope Flexible Array experiment utilizes the direct burial technique for sensor emplacement and is collecting data to examine Earth's structure in the eastern Oregon-western Idaho region. Read More

Activities Enabled by IRIS and IRIS/PASSCAL were Presented Throughout the 2011 AGU Fall Meeting

Highlights include technical papers, the annual Membership Meeting, and the exhibit booth. Read More

2011 Board of Directors Election Results

The IRIS Consortium is very pleased to announce the results of the 2011 Board of Directors election. Read More