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While methane hydrate is quite widespread, its formation does require specific pressure and temperature conditions. Changes in these conditions, therefore, can lead to the dissociation of the hydrate and the release of the enclosed methane. The hydrate reservoir undoubtedly varies in quantity over time as methane is produced by decomposition, or released into the overlying sediments. However, significant releases of hydrate methane, and the free methane that normally underlies it, can be caused by changes in temperature and pressure conditions.
Some free methane, as earlier mentioned, certainly escapes into and through the gas hydrate stability zone via warm fluids circulating in fault zones. The general heating of the hydrate, as by changing ocean currents, or at the end of ice ages, can release much larger quantities, and more rapidly. The temperature changes do not have to be great: a few degrees warming will do. Pressure changes also effect the release of methane. When large quantities of water are removed from the ocean as they are in ice age continental ice sheets, sea level is lowered, and continental margin hydrates are depressurized. Conversely, when sea level rises, the ocean can flood coastal areas underlain by permafrost, thawing them and releasing hydrate methane.
John Boudreaux has reported another depth survey has been completed in the center of the sinkhole.
A video has been posted on YouTube showing that 750′ of cord was used and all 750′ went down to bottom.
This information has been sent to the Blue Ribbon Commission for there [sic] review.
Who even believes this? Have they no capacity to tell anyone the truth about anything? Just two days ago, their geologist point man, Gary Hecox, said this was "unlike anything in the history of Mankind," yet they hadn't a clue what it was — and now they are testing its depth with a CORD? Are they completely brain-dead or is there some "brilliant strategy" at work WHY they are not telling the truth?
Unusual geological event in USA on Saturday, 20 July, 2013
The 24-acre Assumption Parish sinkhole underwent a periodic burp early Friday, the second in two days and the fourth in the past 21/2 weeks, parish officials said. The most recent burp was accompanied by an increase in tremors early Friday, along with other effects often connected with burps, including water movement and so-called "rain drop" bubbles on the lake-like hole’s surface indicating a gas release. John Boudreaux, director of the parish Office of Homeland Security and Emergency Preparedness, said the tremors began to ease by Friday afternoon as they typically do once a burp event has eased. "I went out there (to the sinkhole), and it was almost like glass out there," he said. The increased tremors led to a halt in activity on the sinkhole Friday but Boudreaux said some work could resume Saturday morning. Also on Friday, Conservation Commissioner James Welsh ordered Texas Brine Co. to cease a type of earth-probing test aimed at seeing where gas is in the shallow rock under Bayou Corne.
Sinkhole activity yesterday: burped up new amounts of hydrocarbons and debris. Significant water movement within the sinkhole during event.
Continuing attempts by the parish OEP to measure depth of latest fissure within the sinkhole (the bottom of the upside witchhat). A new 750' measuring tool was still inadequate to measure. Consistent bubbling just north of Well Pad 3.