Dora Carreón-Freyre and others note that NISAR’s continuous, high-frequency data complement decades of fieldwork and ground measurements.

Mexico City is subsiding at about 9.5 inches (24 centimeters) per year, making it one of the fastest-subsiding major cities, based on NASA satellite data from late 2025 to early 2026.

The technology underscores a broader capability to monitor subsidence in coastal and sinking cities worldwide, highlighting urgency where subsidence compounds sea-level rise.

Space-based monitoring provides a comprehensive view of subsidence, enabling informed decisions to address groundwater depletion and its wide-ranging impacts on infrastructure and population.

Space-based monitoring technology offers broad potential applications for disaster monitoring, fault-line changes, climate-change impacts, and improved evacuation and mitigation planning globally.

The project demonstrates how space-based data can document subsidence and inform government planning and evacuation alerts across various scenarios.

NISAR data are viewed as tools to map subsidence at finer scales, potentially enabling building-by-building assessments in the future.

Officials are increasing funding for subsidence and water-management research as part of a broader push to address long-neglected infrastructure and mitigation after water-crisis flare-ups.

Observable consequences include visible tilting of structures and ongoing urban-planning challenges tied to geotechnical factors.

The subsidence is driven by extensive groundwater pumping and urban development on an ancient lake bed, with many downtown streets formerly canals, contributing to a chronic water crisis and strained infrastructure including the subway, drainage, and potable-water systems.

NISAR researchers, led by Paul Rosen, say the satellite provides detailed, scalable observations of subsidence that can inform warnings and evacuation and mitigation planning.

Researchers aim to refine measurements toward building-by-building assessments and see wider uses in disaster monitoring and climate-related changes.