Water extraction and weight of buildings see half of China's cities sink, leaving hundreds of millions at risk of flooding, researchers say

Cross posted from: feddit.de/post/11244556

China’s rapid urbanisation in recent decades means far more water is now being drawn up to meet people’s needs, scientists say. In coastal cities, this subsidence threatens millions of people with flooding as sea levels rise.

China has a long history of dealing with subsiding land, with both Shanghai and Tianjin showing evidence of sinking back in the 1920s. Shanghai has sunk more than 3m over the past century. In more modern times, the country is seeing widespread evidence of subsidence in many of the cities that have expanded rapidly in recent decades.