Welcome to the 2026 GIS in Action Annual Conference hosted by the Oregon & SW Washington Chapter of the Geospatial Professional Network & Cascadia ASPRS.
This project develops a time-series InSAR workflow to monitor surface stability using Sentinel-1 SAR coherence data. By compiling multi-year interferometric pairs from a consistent acquisition geometry, the approach establishes a historical baseline of expected week-to-week coherence behavior across NW Oregon and SW Washington. New observations are compared against this baseline to identify statistically anomalous changes in surface conditions. The workflow combines cloud-based interferometric processing with local geospatial analysis, including automated extraction of coherence rasters and zonal statistics across vector or raster defined regions (administrative boundaries, FAR or land classification). The result is a scalable framework for detecting unusual landscape change, with potential applications in environmental monitoring, land management, and identifying unanticipated surface disturbances to both the natural and built environment.
