It’s a SCUM SLUM!
I’ll add more later, but wanted to enter the correction now.
NO1 Manhatten is NOT sunking due to the weight of the skyscrapers (or any oof the other buildings) on its rocky mass. The ENTIRE NEW ENGLAND REGION of New York, Long Island, New Jersey, eastern PA, CT, and Mass is sinkning down because of the weight of the glaciers that covered the entire area north to Hudson Bay began melting off 12,000 - 15,000 years ago.
Remove those tons of weight on the regional bedrock, and the bedrock rebounds and rises. BUT! The southern edge of the glaciers near the ocean melted out first, tipped up first. Now (the last 8000 years or so) the glaciers formerly over top of the same bedrock continental mass have melted out. Hudon Bay has not had glacier ice for around 6000 years. So that region up north is lifting up in its natural rebound movement.
North end of a swingset bar goes up, the south end goes down - which is where New York and New Jersey are. Going down at around 1.1 mm per year. Mass, CT eastern PA as well.
So, New Jersey is going down at the same rate as Manhatten is going down.
Actual measured global average sea level rise remain near-constant since calibrated accurate measurements began in the mid-1920’s: 2.3 to 2.5 mm/year. 1 inch per decade. 10 inches per year. 1 meter in 400 years.
At the southern tip of Manhatten - and across the river in New Jersey, relative sea level rise is greater than the measured global average: 2.4 mm/year + 1.1 mm/year = 3.4 to 3.5 mm per year for New York-New Jersey. 1 meter in 300 years.