Peak Cumulative (LOS)
-4.2 cm
Vertical Est. (44.2°)
-5.8 cm
3-Ref Sensitivity
[-9.9, -4.2] cm LOS
Rate (cm / 100 days)
-3.5 cm/100d
Annualized est.: -12.8 cm/yr
Latest Pair & Cumulative Summary
- Latest Consecutive Pair Step: -3.92 cm LOS (2026-10-03 to 2026-10-15 at p01: 10.997N 106.912E; cumulative at point: -4.19 cm)
- Affected Population (GHSL GHS-POP E2025, 108d eq., ≥ 0.73 cm 2σ): 83,293 residents (< -2 cm), 4,329 residents across 0.85 km² (< -5 cm).
Top 3 Most-Subsiding Areas
| Rank | 1 km Block Center (Lat, Lon) | Cumulative LOS | Rate |
|---|---|---|---|
| #1 | 10.9967, 106.9121 | -4.19 cm | -3.49 cm/100d |
| #2 | 10.8857, 106.5975 | -1.93 cm | -1.61 cm/100d |
| #3 | 10.8104, 106.6066 | -1.71 cm | -1.43 cm/100d |
Top 5 At-Risk Infrastructure Segments
Infrastructure corridor ranking (OSM canal/road overlay) has not been computed for this regional subset yet.
GNSS Comparison & Calibration Status
Continuous GNSS time-series validation was not bundled for this regional subset.
Cumulative Displacement Map
What This Means
- Peak measured ground motion in Ho Chi Minh City (Vietnam) reached -4.2 cm LOS (-3.5 cm/100d) from 2026-06-17 to 2026-10-15, but low coverage or wide reference spread makes this an indicative estimate.
- About 83,293 residents live on ground sinking faster than 2 cm per 108 days (and 4,329 residents across 0.85 km2 faster than 5 cm per 108 days, above the 0.73 cm 2-sigma noise floor).
- No local GNSS or canal-tilt overlay is bundled for this subset; field inspection and local piezometer records are needed to confirm infrastructure impacts.
Calibration & Quality Notice (PROVISIONAL): NISAR data are provisional. Calibration and validation are carried out by the NISAR project (NASA-JPL and ISRO), not by our team.
Sources: NASA-ISRO NISAR L2 GUNW (CRID P05023 via ASF DAAC); GHSL GHS-POP E2025 R2023A (JRC, CC BY 4.0); Nevada Geodetic Laboratory GNSS; OpenStreetMap (ODbL).
Sources: NASA-ISRO NISAR L2 GUNW (CRID P05023 via ASF DAAC); GHSL GHS-POP E2025 R2023A (JRC, CC BY 4.0); Nevada Geodetic Laboratory GNSS; OpenStreetMap (ODbL).