Paper: ‘Very long period’ tremors increasing under giant Louisiana sinkhole — Indicates gas and 'liquid' moving underground
Paper: ‘Very long period’ tremors increasing at giant Louisiana sinkhole — Indicates gas and ‘liquid’ moving underground
Published: March 22nd, 2013 at 6:36 pm ET
Source: The Advocate
Date: March 22, 2013
[...] John Boudreaux, parish director of Homeland Security and Emergency Preparedness, said the seismic activity was detected around 7 a.m. Friday under the sinkhole and a nearby Texas Brine Co. LLC cavern that failed and is suspected of causing the sinkhole. [...]
Boudreaux said work was stopped within the 71-acre area surrounded by a berm [...]
He said crews had been working on oil retardant boom on the sinkhole at the time the work was stopped Friday. [...]
Seismic monitors detected an increase Friday in the “very long period” tremors that scientists have said indicate fluid and gas movement below the sinkhole, parish officials said in a blog post. [...]
See also: Alert raised to 'Code 3’ at giant Louisiana sinkhole: "Water movement in the sinkhole has been observed" -- Bubbles increasing
Alert raised to ‘Code 3’ at giant Louisiana sinkhole: “Water movement in sinkhole has been observed” — Bubbles increasing
Published: March 22nd, 2013 at 2:12 pm ET
Source: Assumption Parish Police Jury
Date: March 22, 2013 at 12:15p ET
The Office of Conservation, in consultation with Assumption Parish Incident Command, is advising the public that the Oxy 3/sinkhole monitoring alert status has been raised to Code 3 – requiring all work inside and
around the sinkhole to cease until further notice.
Seismic monitoring has detected elevated subsurface activity in the area around the sinkhole and Oxy 3 area indicative of fluid and gas movement below the sinkhole, and water movement in the sinkhole has been observed, along with increased bubbling along the western side of the sinkhole.
The seismic activity is limited to the Oxy 3/sinkhole area, showing no indication of impact to the Oxy 1 area. Monitoring is constantly ongoing in the area and Conservation will advise the public of significant changes in subsurface conditions.
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