Sinkhole seismic event studied

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The Advocate - 1/20/12, Robert Stewart

Photo provided by Louisiana State Police -- Assumption Parish officials said Saturday that increased seismic activity in the vicinity of  the Napoleonville Domehas led to growth in its adjacent sinkhole, as well as cracking of the soil in a drilling well pad, shown in the bottom right corner of this Dec. 19 photograph.

Scientists believe the restless, 8.5-acre sinkhole in Assumption Parish swampland is undergoing a “growth event” after they noticed an upswing in seismic activity in the past few days within a brine-mining cavern carved into the massive Napoleonville Dome, parish officials said Saturday.

Officials first began noticing an increase in seismic activity about two weeks ago, said John Boudreaux, director of the Assumption Parish Office of Homeland Security and Emergency Preparedness.

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