(78 Total References)
Still, "It's a trend that's ...
Still, "It's a trend that's unsettling," said Cornell University geophysicist Katie Keranen, referring to the increasing number of quakes.
Katie Keranen, a former ...
Katie Keranen, a former University of Oklahoma professor now with Cornell University, reported at a Seismological Society of America meeting, that seismic and hydrology data showed "a strong link between a small number of wells and earthquakes migrating up to 50 kilometers (31 miles) away."
"But the Wilzetta was a dead ...
"But the Wilzetta was a dead fault that nobody ever worried about," says Katie Keranen, an assistant professor of geophysics at the University of Oklahoma.
We're driving in her red SUV, just south of the Reneaus' property, when she stops to point out where the quake tore open a footwide fissure across State Highway 62.
The United States Geological Survey (USGS) maintains a database of seismically risky areas.
Its assessment of the Wilzetta Fault, Keranen notes, was "zero probability of expected ground motion.
This fault is like an extinct volcano.
It should never have been active."
When the Wilzetta mysteriously and violently awakened, Keranen
wanted to know why.
partnered with scientists from the USGS
and Columbia University's Lamont-Doherty Earth Observatory.
The morning after the initial foreshock, Keranen's
team scrambled to install three seismometers around Prague.
They did so in time to capture the quake system in unprecedented detail.
says, "We got this beautiful image of the fault plane.
Within a week, her
team and other scientists had placed a total of 25 devices around the fault zone.
One is buried in the Reneaus' backyard.
Now, having completed a yearlong study (just published in the journal Geology), Keranen's research indicates the Oklahoma earthquakes were likely attributable to underground injection of wastewater derived from "dewatering," separating crude oil from the soupy brine reaped through a drilling technique that allows previously inaccessible oil to be pumped up.
"Pretty much everybody who looks at our data accepts that these events were likely caused by injection," Keranen
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Katie Keranen, a University of Oklahoma seismologist who started putting seismic instruments in place after a magnitude-4.7 quake that shook the area days before the larger event, told a packed room at the conference that there are two very deep injection wells near the ruptured fault.
"There's a compelling link between the zone of injection and the seismicity," Keranen
made a similar point as Horton and Keller that data on the amount of fluid injected would not show much reason for it to suddenly cause seismic activity.
And the state has plenty of natural earthquakes, too, she
"So that complicates things," she
The latest study by a group ...
The latest study by a group led by former University of Oklahoma researcher Katie Keranen suggested high-volume disposal wells can cause earthquakes more than 18 miles away.
Information like that has Edmond resident Collins-Clark looking for a new place to live.
just feels the area's earthquake activity is here to stay.
"It doesn't feel like it's going to all of a sudden stop," she
"That makes me very, very sad."
Collins-Clark said she
is "profoundly saddened" to be leaving the home that she
has shared with her
husband for more than 17 years.
has been there for 26 years.
Collins-Clark said she
hopes to move to a less seismically active area by August.
wants to stay close enough to maintain her
counseling practice in Edmond, although she