TianjinSafe drought pumping there totals 0.16 cubic kilometres of groundwater.
In China’s Tianjin, pumping past the limit would restart irreversible subsidence.
Researchers set subsidence thresholds for ten zones, then multiplied each safe pumping buffer by area and the aquifer’s elastic storage.
That 2025 figure is projected to reach about 0.3 cubic kilometres by 2028.
How each outlet framed it
- Nature
- gives Tianjin's safe pumping volume (0.16 km³ now, projected 0.3 km³ by 2028) and the subsidence-safe limit framework
Sources: Nature