New York City is sinking — and it's not just because of the flooding

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Between 2016 and 2023, researchers at NASA's Jet Propulsion Laboratory (JPL) used interferometric synthetic aperture radar (InSAR), a space-based sensing technique, to 3D map the vertical land motion of the ground beneath New York. They found that during this period, the city sinks an average of 0.06 inches (1.6 millimeters) per year.

New York City is sinking — and it's not just because of the flooding : Read more
 
NYC sinks due to isostatic rebound from the removal of the Laurentide ice sheet. Canada goes up, surrounding areas go down. Add this to the 2.5 mm yearly ocean rise and NYC will see water level rising 4 mm per year, about 1.5 feet per century.