Development of open-access Standardized InSAR Displacement Products by the Advanced Rapid Imaging and Analysis (ARIA) Project for Natural Hazards

Interferometric Synthetic Aperture Radar (InSAR) has proven to be a powerful technique for studying how the Earth's surface is deforming. JPL's Advanced Rapid Imaging and Analysis (ARIA) project has been automatically generating SAR-derived data products from ESA's Sentinel-1 mission by leveraging the ISCE software. Recently, ARIA has developed standard InSAR displacement products that are universally compatible with most GIS software and processing environments, allowing users to circumvent the use of specialized radar processing software altogether and make InSAR products more accessible for science applications.

Since the 2018 AGU Fall meeting, ARIA has shared these products to the public through its products page ( http://aria-products.jpl.nasa.gov/ ) and the NASA Alaska Satellite Facility Distributed Active Archive Center data search page ( https://search.asf.alaska.edu/#/ ) as part of the Getting Ready for NISAR project. We will provide an overview on the current archive, which includes complete coverage over California and the Hawaiian island chain, and demonstrate its use for generating higher level time-series displacement maps. We will provide an update on open-source tool development to manage and manipulate these products , as well as the online processing interface for ARIA being developed using NASA High End Computing resources. This will enable users to request and trigger the generation of additional InSAR products.

In addition, we will present the features of a new standard coseismic InSAR displacement product, which addresses the ARIA mission objective to provide rapid and reliable geodetic products viable for science analysis and hazard response. This coseismic products builds on the standard InSAR displacement product being generated by cloud computing services at a 90m resolution, but will only be produced when meeting prerequisite USGS pager level, event magnitude, and depth requirements. Both azimuth and range dense offsets are included in this coseismic product to complement the line-of-sight observations provided by InSAR. This standard product itself is expected to evolve, and should eventually include ancillary layers such as tropospheric, earth/ocean tides, and ionospheric corrections.