METHOD AND DATA SOURCES
Open about where the numbers come from.
Every figure traces to a public dataset, a satellite observation or a field measurement.
Geotechnical checks follow SNI 8460:2017 and the risk process follows ISO 31000.
Reports are screening-level and do not replace detailed site investigation or technical design signed by a certified engineer.
Satellite credit: Contains modified Copernicus Sentinel data 2026.
- InaRISK / BNPB
- National hazard indices and maps
- BMKG
- Earthquake, tsunami and extreme weather
- PVMBG, Badan Geologi
- Volcanoes and ground movement
- Sentinel-1 and NISAR satellite radar
- Ground movement in mm per year (InSAR)
- Copernicus DEM, Sentinel-2, GPM rainfall
- Terrain, land change and rainfall
- Field
- SPT/CPT, AR inspection, sensors, validated Siaga 101 reports
- Economics
- Expected Annual Loss, business interruption, mitigation ROI