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Welcome to the GeoEarthscope Project SAR Data Archive at UNAVCO.

A goal of EarthScope is the improved understanding of the tectonic evolution of the North American continent. Identifying and understanding deformation rates in all tectonic regimes is critical to reaching that goal. The GeoEarthScope project, a part of the EarthScope Program, included the acquisition of SAR data, aerial and satellite imagery, and geochronology data, to examine the strain field beyond the time scales available from the PBO geodetic instrumentation. UNAVCO provides support for EarthScope-related data aquisition, archiving, and distribution.

     The UNAVCO GeoEarthscope SAR Archive

As part of Earthscope's GeoEarthscope project, UNAVCO created an archive of SAR imagery, with data supplied by the European Space Agency (ESA; ERS1, ERS2, and Envisat missions) and the Alaska Satellite Facility (ERS1, ERS2 and Radarsat 1). This SAR data will aid research into earth deformation in North America caused by earthquakes, volcanoes, and other plate tectonic processes.

UNAVCO's main tasks included placing, managing, and tracking data orders, working with ASF and ESA, and creation and operation of the data archives, web site, and online services.

UNAVCO designed and implemented a database to support archiving and and data search, built the physical data archive including hardware and selection and purchase of more than 40 terabytes of storage, implemented data access permission mechanisms, and created online services for users to find and download data available in the archive.

UNAVCO continues to work with SAR scientists to ensure the best data is archived and available in the most efficient manner, and to add new services as needed. The online search tool shows the archive contents, is used to create requests for data downloads, and provides KML files for display of SAR scenes in Google Earth.

Proposed, submitted, and received data and tasking orders are available on the data orders page. Details regarding the scenes in the Basin and Range Cat-1 proposal are available here.


     UNAVCO Earthscope SAR Archive Status

There are more than 39,000 SAR scenes in this archive (see current status page), stored in more than 16 terabytes.


     Access to the GeoEarthscope Project SAR Data

Institutions with a basic research mission are eligible to apply for access to the GeoEarthscope project's SAR data. Access to SAR data files is limited to approved and registered users. To apply for data access use the Mini Cat-1 submission form.

     Other Sites of Interest

Be sure to see the WInSAR Archive at UNAVCO.

Check out the new Supersites SAR archive at UNAVCO.


Funding for UNAVCO GeoEarthscope operations and data acqusitions is provided by NSF and NASA. Important assistance has also been provided by the ESA, the USGS, and the ASF.