The USArray component of the NSF-funded EarthScope project ended its observational period in September 2021 and all remaining close-out tasks concluded in March 2022. Hundreds of seismic stations were transferred to other operators and continue to collect scientific observations. This website is now in an archival state and will no longer be updated. To learn more about this project and the science it continues to enable, please view publications here: and citations of the Transportable Array network DOI 10.7914/SN/TA.

To further advance geophysics support for the geophysics community, UNAVCO and IRIS are merging. The merged organization will be called EarthScope Consortium. As our science becomes more convergent, there is benefit to examining how we can support research and education as a single organization to conduct and advance cutting-edge geophysics. See our Joining Forces website for more information. The site will soon host the new EarthScope Consortium website.

A Continental-scale Seismic Observatory


Data from all USArray components are available through the IRIS Data Management Center (DMC) including:

  • Transportable Array
  • Flexible Array
  • Reference Network
  • Magnetotellurics stations

All USArray seismic data receive quality control at the IRIS Data Management Center (DMC), the Array Network Facility (ANF), the Array Operations Facility (AOF), or a Data Collection Center of the USGS in Albuquerque, NM or Golden, CO. Additionally, the IRIS DMC runs a suite of algorithms against all data arriving at the DMC in real time. In some cases, these algorithms are good indicators of data quality. All USArray MT data receive quality control through Oregon State University's (OSU) USArray Data QC group, where robust remote reference methods are used to generate MT transfer functions and induction vectors.

The IRIS DMC is the access point for you to gain access to waveforms, metadata, MT time series and derived data products from USArray stations.

Waveform Data and Images

Station Information

Data Products

  • SPUD (The Searchable Product Depository)