Global Atlas · 2026

Sinking basins worldwide

We used NASA-ISRO NISAR provisional L2 GUNW (Geocoded Unwrapped Interferogram) radar pairs to measure ground sinking in 29 basins over the same 93 days. Rates are in cm/100d (centimeters per 100 days; 1 in = 2.54 cm) along satellite LOS (line-of-sight: toward or away from the radar), where deeper red means faster sinking and pale tones mean near-zero motion. Low-coverage basins or series flagged by our automated quality checks are marked indicative only so you always know which numbers are rock-solid.

NISAR data are provisional. Calibration and validation are carried out by the NISAR project (NASA-JPL and ISRO), not by our team.

—Regions

—Reliable

—Indicative only

How to read this map (4 steps)

LOS vs. vertical: Numbers show radar line-of-sight (LOS) motion; use Values: LOS to toggle approximate vertical (LOS / cos θ).
Color scale: Deeper red marks faster sinking (cm or cm/100d over the 93-day common window); pale tones mark near-zero motion.
Confidence badge: high / medium badges indicate consistent multi-reference stacks and solid valid coverage (reliable).
Indicative only: Low-coverage scenes or QC-flagged series (phase-cycle jumps or single-date spikes) are separated as indicative only.

Top 5 Basins (93-d window) PROVISIONAL

#	Region	Rate	Conf

Click to selectAll 29 basins ↓

Rate (cm / 100 days, LOS)

≤ −6.0 cm/100d

−4.0 to −6.0 cm/100d

−2.0 to −4.0 cm/100d

> −2.0 cm/100d

Fastest-sinking places in our 2026 NISAR atlas (ranked by common 93-day window)

All values are line-of-sight (LOS) displacement from provisional NISAR L2 GUNW data, ranked by rate per 100 days over the common 93-day window (28 Jun – 29 Sep 2026) with 95% confidence intervals (rate_ci_cm_per_100d) where available. Low-confidence regions are separated as indicative only. NISAR data are provisional. Calibration and validation are carried out by the NISAR project (NASA-JPL and ISRO), not by our team.

Reliable measurements

#	Region	Common rate (cm/100d)	Area (< −5 cm)	Max LOS	Period	Confidence

Indicative only (low confidence)

#	Region	Common rate (cm/100d)	Area (< −5 cm)	Max LOS	Period	Confidence

What changed — latest 10 atlas updates

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Data & citation

Download the global atlas tables and open documentation for methods and data sources:

atlas.json Sources & DOIs Data dictionary Atlas methods

Team Aseltech (2026). NISAR Global Subsidence Atlas 2026 (provisional). Derived from NASA-ISRO NISAR L2 GUNW products via Alaska Satellite Facility DAAC. NISAR data are provisional; calibration and validation are carried out by the NISAR project (NASA-JPL and ISRO), not by our team.