The list of dangers related to the Cascadian Subduction Zone continues to grow my grim with each passing day. This article deals with the methane danger facing the West Coast. The effects for Cascadia are not made readily available. and I am certain this oversight is intentional for financial reasons (eg insurance and property values would be threatened). To gain a fuller understanding that methane accumulation off the West Coast poses, we will have to look at the aftermatch of the Gulf Oil Spill.
Large and Numerous Deposits of Methane Found Off of the Northwest Coast
There is a study in the Journal of Geophysical Research: Solid Earth which indicates that methane vaults were found on the Washington margin in 2009 and since that time, the number has grown exponentially. The original discovery was make about 30 miles from the coastline. The methane bubles are gejerated. The study revealed why the bubble plumes, all 1700 in the original discovery, appeared where they did. The appearance of the methane suggests that the cause is due to underlying geological activity. The methane emergence is due to fluid rise through the faults generated by the moving plates as one plate is moving under the Cascadia plate. Methane explosions are expected to become a major problem both at sea and on land.
Many have asked me if there are going to be random explosions as a result of the increased presence of methane of the West Coast. The answer to that question lies in what happened in the aftermatch of the Gulf oil explosion.
The Gulf and the Methane Problem
The oil emanating from the seafloor contains about 40% methane, compared with about 5% found in typical oil deposits, said John Kessler, a Texas A&M University oceanographer who is studying the impact of methane from the spill. Kessler et al, in June of 2010, warned the public that methane was not going to dissipate on its own and that it would continue to increase and come ashore with unpredictable results. Merchant Marine expert, Captain Kelly Sweeney, while appearing on the CSS on July 10, 2010, made similar predictions in which he stated that he and many of his sources feared catastrophic methane explosions near several coastal cities which could be triggered by the right atmospheric conditions combined with the high levels of highly flammable methane. Sweeney also added that the methane cannot escape the water column that the oil is trapped in. The use of highly dangerous Corexit pushed the surface oil into the water column. Corexit does not dissipate oil spills. BP used this substance because they were being fined for every square mile that the oil covered. The use of Corexit limited their financial exposure but increased the risks to the people in the region. Dr. Wilma Subra has found that when the oil is pushed into the water column, the mass becomes devoid of oxygen. The only biological item that can survive is algae. This should get your attention. I am certain the readers have noticed the plethora of TV ads on algae as the next biofuel. Additionally, there is a second effect. When the oil is pushed into the water column, methane is concentrated and it never dissipates on its own as it grows in size and explosiveness.
John Boudreaux, director of the Assumption (LA.) Parish Office of Homeland Security and Emergency Preparedness has said there are concerns that the gas can build pressure under the clay layer that lies above their local aquifer. According to Boudreaux and geologists, once the aquifer reaches a pressure greater than 75 to 85 pounds per square inch, the clay layer might not hold back the accumulated gas and a set of major explosions could occur. Something unexpectedly triggered an emergency flare 40 feet high at the Bayou Corne, LA. The potential force of the explosion is frightening.
An explosion of this magnitude would be within the range of one and a half B83 thermonuclear (hydrogen) bombs, according to scientists.
In 2014, in the aftermatch of this discovery, Louisiana officials have suddenly and without comment banned outdoor fires. Such an accumulation was found in the Bayou Borne Community (pictured below). This became the first example that officials in Lousiana had with regard to massive methane explosions and collapsed surface land creating massive sink holes.
Ray Charles could see these dots connecting on the wall. The following is a live example of what Cascadia and points south running through the Baja are in for.
Much more on link: