that shook the lab, earthquake

[RickN]

Have you guys heard what the USGS is saying has caused all these quakes the last few years?

I read a piece awhile back somewhere that it is being caused by the changes in levels of the lakes, ponds, etc. When we were going through the drought the lakes were getting low or going dry so there was much less weight pushing on the ground and it expanded causing quakes. Now that we have had all the rain this year, the weight is back pushing down and causing more quakes. The piece said that is why most of our quakes have been located close to lakes. They also said it can take 6 months or more for the weight changes to cause a quake.

Just one of those useless things I run across.

 

[jmike314]

Take your pick from the blame list:
> fracking
> lake levels
> previously undiscovered north/south fault line running through OKC

 

[FullAuto]

That wasn't an Earthquake. It was JB dropping his wallet.

 

[caojyn]

Take your pick from the blame list:
> fracking
> lake levels
> previously undiscovered north/south fault line running through OKC

> god farts

 

[RickN]

> god farts

I did not, that was the dog!

 

[Billybob]

Have you guys heard what the USGS is saying has caused all these quakes the last few years?

I read a piece awhile back somewhere that it is being caused by the changes in levels of the lakes, ponds, etc. When we were going through the drought the lakes were getting low or going dry so there was much less weight pushing on the ground and it expanded causing quakes. Now that we have had all the rain this year, the weight is back pushing down and causing more quakes. The piece said that is why most of our quakes have been located close to lakes. They also said it can take 6 months or more for the weight changes to cause a quake.

Just one of those useless things I run across.

Guess they've changed their minds?


U.S. Government Confirms Link Between Earthquakes and Hydraulic Fracturing


“The Army discontinued use of the well in February 1966 because of the possibility that the fluid injection was “triggering earthquakes in the area,” according to the RMA. In 1990, the “Earthquake Hazard Associated with Deep Well Injection--A Report to the U.S. Environmental Protection Agency” study of RMA events by Craig Nicholson, and R.I. Wesson stated simply, “Injection had been discontinued at the site in the previous year once the link between the fluid injection and the earlier series of earthquakes was established.”...


“In 1967, the U.S. Army Corps of Engineers and the U.S. Geological Survey (USGS) determined that a deep, hazardous waste disposal well at the Rocky Mountain Arsenal was causing significant seismic events in the vicinity of Denver, Colorado.”...


According to the USGS website, under the undated heading, “Can we cause earthquakes? Is there any way to prevent earthquakes?” the agency notes, “Earthquakes induced by human activity have been documented in a few locations in the United States, Japan, and Canada...


So both the U.S Army and the U.S. Geological Survey over fifty years of research confirm on a federal level that that “fluid injection” introduces subterranean instability and is a contributory factor in inducing increased seismic activity.” How about “causing significant seismic events?”...


On 2 November a report commissioned by Cuadrilla Resources acknowledged that hydraulic fracturing was responsible for two tremors which hit Lancashire and possibly as many as fifty separate earth tremors overall. The British Geological Survey also linked smaller quakes in the Blackpool area to fracking. ...


But, back to Oklahoma. Austin Holland’s August 2011 report, “Examination of Possibly Induced Seismicity from Hydraulic Fracturing in the Eola Field, Garvin County, Oklahoma” Oklahoma Geological Survey OF1-2011, studied 43 earthquakes that occurred on 18 January, ranging in intensity from 1.0 to 2.8 Md (milliDarcies.) While the report’s conclusions are understandably cautious, it does state, “Our analysis showed that shortly after hydraulic fracturing began small earthquakes started occurring, and more than 50 were identified, of which 43 were large enough to be located.”


http://oilprice.com/Energy/Natural-...een-Earthquakes-And-Hydraulic-Fracturing.html

 

[Yourshoesareuntied]

I'm didn't feel anything.

That's what she said!!

 

[RickN]

Guess they've changed their minds?


U.S. Government Confirms Link Between Earthquakes and Hydraulic Fracturing


“The Army discontinued use of the well in February 1966 because of the possibility that the fluid injection was “triggering earthquakes in the area,” according to the RMA. In 1990, the “Earthquake Hazard Associated with Deep Well Injection--A Report to the U.S. Environmental Protection Agency” study of RMA events by Craig Nicholson, and R.I. Wesson stated simply, “Injection had been discontinued at the site in the previous year once the link between the fluid injection and the earlier series of earthquakes was established.”...


“In 1967, the U.S. Army Corps of Engineers and the U.S. Geological Survey (USGS) determined that a deep, hazardous waste disposal well at the Rocky Mountain Arsenal was causing significant seismic events in the vicinity of Denver, Colorado.”...


According to the USGS website, under the undated heading, “Can we cause earthquakes? Is there any way to prevent earthquakes?” the agency notes, “Earthquakes induced by human activity have been documented in a few locations in the United States, Japan, and Canada...


So both the U.S Army and the U.S. Geological Survey over fifty years of research confirm on a federal level that that “fluid injection” introduces subterranean instability and is a contributory factor in inducing increased seismic activity.” How about “causing significant seismic events?”...


On 2 November a report commissioned by Cuadrilla Resources acknowledged that hydraulic fracturing was responsible for two tremors which hit Lancashire and possibly as many as fifty separate earth tremors overall. The British Geological Survey also linked smaller quakes in the Blackpool area to fracking. ...


But, back to Oklahoma. Austin Holland’s August 2011 report, “Examination of Possibly Induced Seismicity from Hydraulic Fracturing in the Eola Field, Garvin County, Oklahoma” Oklahoma Geological Survey OF1-2011, studied 43 earthquakes that occurred on 18 January, ranging in intensity from 1.0 to 2.8 Md (milliDarcies.) While the report’s conclusions are understandably cautious, it does state, “Our analysis showed that shortly after hydraulic fracturing began small earthquakes started occurring, and more than 50 were identified, of which 43 were large enough to be located.”


http://oilprice.com/Energy/Natural-...een-Earthquakes-And-Hydraulic-Fracturing.html

Must have, the piece I read was only a few months ago and was based on recent research.

 

[Cohiba]

We were at Ted's on North May when it happened. Everyone just kinda shook as did the tables and chairs. Quiet for a few seconds and then my wife said..kinda loud..."That was an earthquake". Everyone chimed in and went back to eating.

 

[RickN]

Not the piece I was talking about but some of the same info,

http://www.news9.com/story/23899666/latest-swarm-of-ok-earthquakes-could-be-tied-to-lake-acardia

An interesting piece, we have three possible causes in OK, water wells, injection wells, and the lakes.

http://en.wikipedia.org/wiki/Induced_seismicity