Share “Earthquakes decline in Oklahoma in 2012”

Earthquakes decline in Oklahoma in 2012

The number of small Oklahoma earthquakes was down in 2012. There has been a significant increase in earthquakes in recent years, however.
BY ROBERT MEDLEY rmedley@opubco.com Published: February 11, 2013

/articleid/3753687/1/pictures/1948264">Photo - Top: Students take cover in Melinda Jordan’s fourth-grade classroom at Cleveland Bailey Elementary. Photos by Jim Beckel, The Oklahoman
Top: Students take cover in Melinda Jordan’s fourth-grade classroom at Cleveland Bailey Elementary. Photos by Jim Beckel, The Oklahoman

Earthquake causes

Holland said scientists at the Oklahoma Geological Survey continue to study Oklahoma earthquakes. Many contributing factors are possible, such as weather or drought specifically, he said.

“We are working on studying many aspects of seismicity,” Holland said.

Hydraulic fracturing, or fracking, can cause small earthquakes for short periods of time, but it does not explain the increase in Oklahoma in recent years, Holland said.

Fracking, a well stimulation technique that is used with high pressure water to crack rock, may have contributed to about 10 percent of earthquakes from 2010 through 2012 and about 10 quakes were 3.0 magnitude or greater, Holland said.

He said fracking did not contribute to the big one Nov. 6, 2011.

Another concern is fluid injection from saltwater disposal wells. Scientists are studying links to earthquakes in Texas and saltwater disposal wells.

Bill Ellsworth, a seismologist at the U.S. Geological Survey's Menlo Park (Calif.) Science Center, said Arkansas also has had a significant increase in earthquakes in recent years. Links to wastewater disposal and earthquakes is being studied there, he said.

Prague City Manager Jim Greff said he continues to notice more small earthquakes, but nothing like the big one that caused all the damage.

“There are lots of little ones all the time,” Greff said. “Be aware, earthquakes can happen at any time.”

Wakefield said most of the damage has been repaired in the Lincoln County area.

“You're not seeing as many blue tarps on roofs and houses these days,” he said.


AROUND THE WEB

  1. 1
    Pope to say D.C. Mass in Spanish in bow to 'Hispanic population'
  2. 2
    Man pleads guilty in Stillwater near-beheading case
  3. 3
    Google unveils new logo with emphasis on apps, devices
  4. 4
    Woman arrested after reportedly hitting Oklahoma restaurant employee with beer bottle
  5. 5
    RGIII blames intern for liking Instagram post critical of Daniel Snyder
+ show more

FEATURED JOBS



× Trending news Article