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 USArray.org 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: http://usarray.org/researchers/pubs 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 earthscope.org will soon host the new EarthScope Consortium website.

USArray
A Continental-scale Seismic Observatory

Transportable Array in Alaska - Key Updates

New Developments

 In collaboration with the Canadian government, two TA stations (A36M, C36M) were deployed in September 2013 at Sachs Harbour and Paulatuk in the Northwest Territorries. These seismometers, placed in shallow cased coreholes, will help to better illuminate seismicity occuring in the Beaufort Sea and provide a broader reach to the EarthScope efforts.

Past News

 

 

IRIS is working with the Global Terrestrial Network for Permafrost to explore ways to profile soil temperature at key sites.

This photo shows a pilot study using a thermistor string alongside the TA.TCOL.-- 10M cased hole at College International Geophysical Observatory. This area is already the site of the IRIS Global Seismic Network station IU.COLA.

Pictured from left to right: Bob Busby (IRIS TA Manager), Rob Lewis (Metrozet LLC), Guillermo Naranjo (Metrozet LLC), Tom Van Zandt (Metrozet LLC), Bill Cable (UAF, kneeling)

Credit: Katrin Hafner (IRIS TA Chief of Operations) 10/9/2012