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Mon Jan 18, 2016, 09:34 PM

More quakes rattle Oklahoma but state avoids tough measures [View all]

Jan 18, 1:08 PM EST

More quakes rattle Oklahoma but state avoids tough measures

By SETH BORENSTEIN, KELLY P. KISSEL and SEAN MURPHY
Associated Press

OKLAHOMA CITY (AP) -- In Oklahoma, now the country's earthquake capital, people are talking nervously about the big one as man-made quakes get stronger, more frequent and closer to major population centers. Next door in Kansas, they're feeling on firmer ground though no one is ready yet to declare victory.

A year ago, the states had a common problem - earthquakes caused by the disposal of wastewater from oil and gas exploration. They chose different solutions. Kansas, following early scientific studies, decided to restrict how much and how fast the wastewater could be pumped back underground. Oklahoma instead initially concentrated on the depth of the wastewater injections.

Developments since then haven't been reassuring in Oklahoma, where a quake knocked out power in parts of an Oklahoma City suburb several weeks ago and where fears are growing that the worst is yet to come. On Friday, about 200 unhappy residents packed a forum at the state capitol convened by critics of the state's response. A governor's task force is studying the problem but officials have so far avoided taking tougher measures.

The quakes, which have been mostly small to medium sized, have caused limited damage, and no one foresees anything like the massive damage and deaths in the famous quakes in California, seismologists say.

Still, "It's a trend that's unsettling," said Cornell University geophysicist Katie Keranen, referring to the increasing number of quakes. Frequent small quakes can be a harbinger of bigger ones. "You have the ingredients you need to have a larger earthquake."

More:
http://hosted.ap.org/dynamic/stories/U/US_ON_SHAKY_GROUND_OKOL-?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT&CTIME=2016-01-18-13-08-33

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Judi Lynn Jan 2016 OP
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