Stop 1 of 6 · Intro & 01 Atlas (0:00–0:30)

Where is the ground sinking? 29 basins on one 93-day ruler.

We turned the first months of NASA-ISRO NISAR radar data into a self-checking global subsidence atlas: 29 basins (15 reliable, 14 indicative) measured with one open pipeline on the same 93 days (28 Jun – 29 Sep 2026), led by Eloy, Arizona at −8.6 cm/100d; Konya Plain (−11.0) stays indicative after our own review.

Open Global Atlas → Open Home Page

Source: Data: NASA-ISRO NISAR, ASF DAAC. Analysis: Team Aseltech (data/global/atlas.json, data/global/home_summary.json).

Rank	Region	Common (cm/100d)	Confidence
1	Eloy (USA)	−8.6	high
2	Central Valley (USA)	−7.3	medium (GNSS r=0.924)
3	Kashmar (Iran)	−7.0	high
4	Mashhad (Iran)	−6.9	medium
5	Mexico City (Mexico)	−6.3	medium

Stop 2 of 6 · 02 Self-Checking QC (0:30–1:00)

A check that catches our own errors

Automated time-series checks flagged 12.1 cm full L-band phase-cycle jumps; Semarang dropped from −12.1 to −6.2 cm (#7 reliable), Tehran updated −3.5 to −7.4 cm, and 5 flagged basins stay indicative only.

Inspect QC Rules → View Indicative Filter

Source: Analysis: Team Aseltech (tools/atlas_qc.py, data/global/qc_flags.json, data/global/atlas_changelog.json).

12.1 cm

Full L-band phase-cycle unwrapping jump threshold caught at epoch 10–11

−12.1 → −6.2 cm

Semarang re-processed coastal subsidence (#7 reliable, −5.5 cm/100d)

5 Flagged

Bangkok, Beijing, Delhi, Gorgan, Pekalongan isolated as indicative only

−3.5 → −7.4 cm

Tehran reference moved off-basin after QC review

Stop 3 of 6 · 03 GPS & Validation (1:00–1:30)

Proof on the ground and uncertainty

Provisional NISAR motion tracks 10 permanent Central Valley GPS stations (r = 0.924, 1.00 cm median RMSE), beats ≈ 0.3 cm formal phase noise, and includes a Mexico City OPERA pattern check (r = 0.912, winter vs summer).

See All Checks in Science → Open Central Valley

Source: Data: NASA-ISRO NISAR, ASF DAAC; NGL GNSS; NASA JPL OPERA. Analysis: Team Aseltech (data/central_valley/validation.json, data/global/opera_check.json).

r = 0.924

10-station Central Valley GPS agreement (1.00 cm median RMSE, 1.37 cm final)

≈ 0.3 cm

Formal pixel phase noise (0.294 cm median); 29/29 literature checks

r = 0.912 (10 pts)

Mexico City OPERA shape check (winter vs summer; CV r = 0.40, Eloy r = 0.09)

3σ = 3.62 cm

London Clay negative control: below_detection (97.7% within ±1.5 cm)

Stop 4 of 6 · 04 People & 05 Water Lost (1:30–2:00)

1.17 M people on sinking ground & 0.3174 km³/yr water lost

Overlaying GHSL 2025 population counts 1,167,429 residents on 477.72 km² sinking > 5 cm, while 11 months of NISAR data isolate 0.3174 km³/yr of permanent Central Valley aquifer storage lost.

Open Exposure & Storage Data → Time-Series Explorer

Source: Data: NASA-ISRO NISAR, ASF DAAC; GHSL E2025. Analysis: Team Aseltech (data/global/vital_signs.json, data/central_valley_fullyear/storage_loss.json).

1.17 M people

1,167,429 residents on 477.72 km² sinking > 5 cm (GHSL 2025, 29 basins)

0.3174 km³/yr

Permanent Central Valley aquifer storage lost (mixed 11-month chain)

−16.8 ± 2.2 cm/yr

Earlimart permanent compaction vs 11.7 cm seasonal rebound (R² = 0.97)

239.54 km²

Central Valley area sinking > 5 cm LOS in 108 days (−7.8 cm peak)

Stop 5 of 6 · 06 Infrastructure & 07 Bulletins (2:00–2:30)

81 / 645 tilting corridors & 29 one-page bulletins

Every canal, road and railway in the Central Valley is screened for uneven sinking with uncertainty bounds, and every atlas basin gets a printable one-page NASA-style monitoring bulletin.

Open Konya Plain Bulletin → See Tilt Methodology

Source: Data: NASA-ISRO NISAR, ASF DAAC; OpenStreetMap. Analysis: Team Aseltech (data/central_valley/assets.json, tools/bulletin.py).

81 / 645

Infrastructure segments > 20 mm/km tilt (±25% top-10 100% rank-invariant)

57.01 mm/km

Peak differential tilt on the Tulare Irrigation District Canal

29 bulletins

Printable A4 NASA-style monitoring bulletins with confidence & revision log

6.4× sinkholes

Karapınar sinking < 1 km vs > 5 km from 29 mapped sinkholes (p = 0.0001)

Stop 6 of 6 · 08 Simulator & 09 Open Engine (2:30–3:00)

A 30-second simulator & an open one-command engine

Test 24 months of pumping choices in the NISAR Vision groundwater simulator, calibrated to NISAR rates, or reproduce any basin from public NASA ASF data with one open command.

Launch Simulator → Get Code & Data

Source: Model calibrated to USGS/NGL Terra Bella compaction and NISAR rates (game/model.js, pipeline/nisarvision).

NISAR Vision groundwater simulator, 24-month groundwater subsidence simulator interface