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Full catalog/ARIA_S1_GUNW
ARIA_S1_GUNW·v1·dataset

Ground shifts mapped by radar pairs (Sentinel-1)

ARIA Sentinel-1 Geocoded Unwrapped Interferograms
deformation NASA ASF Level 2 active netCDF-4PNGJSON
In plain English

What it measures. Maps of how much the ground surface moved between two radar passes over the same area, revealing subtle shifts like land rising, sinking, or slipping.

How it's made. Produced by NASA's JPL from pairs of Sentinel-1 radar images using a technique called interferometry, which compares the two passes to detect movement.

How & where you'd use it. Widely used to study earthquakes, volcanoes, and ground sinking or rising in active regions, helping scientists track hazards over time.

What's measured

SOLID EARTH › TECTONICS › EARTHQUAKESSOLID EARTH › TECTONICS › PLATE TECTONICSSOLID EARTH › TECTONICS › VOLCANIC ACTIVITY

Coverage & cadence

  • Time span2014-06-15 → ongoing
  • Measured bySentinel-1A (C-SAR) · Sentinel-1B (C-SAR) · Sentinel-1C (C-SAR)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • FormatsnetCDF-4, PNG, JSON
  • StatusACTIVE

What you can do with it

  • Measure ground motion and subsidence (InSAR)
  • Track earthquakes, volcanoes and landslides
  • Map elevation and terrain change
Official description

Level-2 interferometric products generated by the Jet Propulsion Lab (JPL) ARIA project. The creation, discovery, and distribution of these products support InSAR science around tectonically active regions, volcanoes, or areas of subsidence/uplift. The generation of the ARIA-S1-GUNW products was in part funded through collaborations with the AWS Open Data Program and NASA ROSES.

Get the data

aria_s1_gunw_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="ARIA_S1_GUNW",
    version="1",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from ASF
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.