A new approach to preventing human-induced earthquakes
July 28, 2021MIT
When humans pump large volumes of fluid into the ground, they can set off potentially damaging earthquakes, depending on the underlying geology. This has been the case in certain oil- and gas-producing regions, where wastewater, often mixed with oil, is disposed of by injecting it back into the ground a process that has triggered sizable seismic events in recent years.
Now MIT researchers, working with an interdisciplinary team of scientists from industry and academia, have developed a method to manage such human-induced seismicity, and have demonstrated that the technique successfully reduced the number of earthquakes occurring in an active oil field.
A new approach to preventing human-induced earthquakes
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New approach to preventing human-induced earthquakes
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âSee-Through Soil Could Help Farmers Deal With Future Droughts
In research that may eventually help crops survive drought, scientists at Princeton University have uncovered a key reason that mixing material called hydrogels with soil has sometimes proven disappointing for farmers.
Hydrogel beads, tiny plastic blobs that can absorb a thousand times their weight in water, seem ideally suited to serve as tiny underground reservoirs of water. In theory, as the soil dries, hydrogels release water to hydrate plants’ roots, thus alleviating droughts, conserving water and boosting crop yields.
Yet mixing hydrogels into farmers’ fields has had spotty results. Scientists have struggled to explain these uneven performances in large part because soil being opaque has thwarted attempts at observing, analyzing and ultimately improving hydrogel behaviors.
Adam Hadhazy, Office of Engineering Communications
Feb. 18, 2021 12:59 p.m.
Princeton researchers used tiny glass beads as a substitute for soil, so they could observe the behavior of hydrogels tiny plastic blobs that can absorb a thousand times their weight in water whose success in agriculture has been puzzlingly uneven. The researchers used a chemical that compensated for the distortion caused by the round beads, resulting in a perfectly clear view of the hydrogel.
Photo by the Datta Lab, Princeton University
In research that may eventually help crops survive drought, scientists at Princeton University have uncovered a key reason that mixing material called hydrogels with soil has sometimes proven disappointing for farmers.