13 ms·
I don't understand that telephone pole picture, the ground did not move around the telephone pole surely. I don't understand the graphics either. 1ft/year gen
by peteradio 3y ago
I don't understand that telephone pole picture, the ground did not move around the telephone pole surely. I don't understand the graphics either. 1ft/year generally, but slower than that in the most extreme?
- deleted 3y ago[deleted]
- croes 3y agoThey pump ground water that keads to sinking land, 1 foot per year. The pole is from 1977 or later but shows the historical land level of 1955 and 1925
- voakbasda 3y agoWhen you remove the water from the ground, the drained soil compacts. The topmost sign on the pole pole shows where the ground level was 50 years earlier, caused by excessive taking of groundwater.