Geophysics and Gravity Measurements

Researchers use satellites like GRACE (Gravity Recovery and Climate Experiment) to detect tiny changes in Earth's gravitational field caused by shifting masses of water—whether locked in polar ice sheets, held in underground aquifers, or moving through ocean basins. By translating these gravitational signals into precise measurements of water redistribution, scientists can track how much melting ice and depleted groundwater are contributing to rising sea levels globally. The work matters because sea level projections feed directly into coastal planning and climate policy, yet significant uncertainties remain in separating the contributions of individual sources—particularly groundwater extraction, which has accelerated in recent decades but remains difficult to model reliably at regional scales. Active research is pushing toward tighter integration of satellite geodesy with hydrological models to close the sea level budget and improve forecasts of where and how fast coastlines will change.

Works

304,237

Total citations

1,089,487

Keywords

GRACEsea level risegroundwater depletionclimate changesatellite measurementspolar ice sheets