To understand how subsidence and fissures result from pumping aquifers, scientists and engineers need to measure horizontal as well as vertical strain, geologists have now demonstrated. BLACKSBURG ...

They found that pumping from the lower aquifer is worse for triggering subsidence, indicating that pumping water from the upper zone is a better option to limit the sinking.

As Aquifers Run Low, Mexico City Is Sinking Fast In an irreversible process, ... “Subsidence by itself may not be a terrible issue,” says Cabral-Cano.

For subsidence to become a problem, you need two things: The right kind of land, and an over-exploited aquifer. Aquifers hold water in between bits of sand, gravel, or clay.

The scientists analyzed how much water would be needed to recharge portions of aquifers that are driving the subsidence problems, and calculated it would be about 680,000 acre-feet per year on ...

For subsidence to become a problem, you need two things: The right kind of land, and an over-exploited aquifer. Aquifers hold water in between bits of sand, gravel, or clay.

The aquifers. Whether subsidence can be slowed down depends on what’s causing it, said Simon Ghanat, associate professor of civil and environmental engineering at The Citadel.

The UGS study, published in 2014, found 8.3 miles of fissures in Cedar Valley, with surface subsidence of as much as 3 feet in some places. Utah Geologist Tyler Knudsen, the lead author on the ...

Where subsidence is causing the most harm, we’ve got to try and get it to those compacting aquifers.” A section of the Friant-Kern Canal that was damaged by subsidence undergoes repairs in ...

Many cities have experienced subsidence. The most famous, Venice, has sunk about 9 inches during the 20th century as its water table has dropped. But from here Venice’s problems seem marginal.

He was right. Greater Houston has some of the highest subsidence rates in the United States; within that region, parts of Katy are sinking faster than anywhere else, up to 1.4 centimeters a year ...