New York City is sinking — and it's not just because of the flooding
Between 2016 and 2023, researchers at NASA's Jet Propulsion Laboratory (JPL) used a space-based method known as interferometric synthetic aperture radar (InSAR) to 3D-map the ground beneath New York City, measuring vertical land motion over time. They found that during this period, the area sank an average of 0.06 inches (1.6 millimeters) per year.