Earthquakes in Oklahoma spiked in 2015, jumping more than 50 percent and setting another state record, according to Energy Wire.

The state was rocked by 881 earthquakes with a magnitude of 3 or greater last year, compared to 578 in 2014, according to data from the Oklahoma Geological Survey.

Quakes have been on the rise in Oklahoma following a boom in oil and gas activity — state officials have blamed the seismic activity on an increase in wastewater injections in drilling areas.

The technique that has helped Oklahoma become a bigger energy producer, hydraulic fracturing, involves blasting a combination of water, chemicals and sand underground to unlock the oil and natural gas trapped in shale deposits. When the left over water from that process is pumped into some fault lines, state researchers have said, an increase in seismic activity can result. The Oklahoma Corporation Commission requires well operators to prove that their wells do not reach a certain depth that has been linked to greater earthquake activity, according to The Oklahoman.

    

Oil and gas industry representatives have pushed back against the link between wastewater disposal and earthquakes.

But there has been increased scrutiny in North Texas as well, where communities have also felt increasing intensity in quakes. The Railroad Commission last year determined that the link between disposal wells and seismic activity were not clear, however.