[eddie gein]

Originally Posted by johnspecial

Negative Gein, Find me some definitive proof.

BTW. Did you feel the quakes last night? I felt a rumble around 4am.

Here is some more propaganda that comes from Science magazine

Abstract

Microearthquakes (that is, those with magnitudes below 2) are routinely produced as part of the hydraulic fracturing (or “fracking”) process used to stimulate the production of oil, but the process as currently practiced appears to pose a low risk of inducing destructive earthquakes. More than 100,000 wells have been subjected to fracking in recent years, and the largest induced earthquake was magnitude 3.6, which is too small to pose a serious risk. Yet, wastewater disposal by injection into deep wells poses a higher risk, because this practice can induce larger earthquakes. For example, several of the largest earthquakes in the U.S. midcontinent in 2011 and 2012 may have been triggered by nearby disposal wells. The largest of these was a magnitude 5.6 event in central Oklahoma that destroyed 14 homes and injured two people. The mechanism responsible for inducing these events appears to be the well-understood process of weakening a preexisting fault by elevating the fluid pressure. However, only a small fraction of the more than 30,000 wastewater disposal wells appears to be problematic—typically those that dispose of very large volumes of water and/or communicate pressure perturbations directly into basement faults.

[eddie gein]

Originally Posted by johnspecial

Negative Gein, Find me some definitive proof.

BTW. Did you feel the quakes last night? I felt a rumble around 4am.

Here is some more propaganda that comes from Science magazine. This is from a review of literature by William Ellsworth. Included is the pertinent part of the abstract


Science 12 July 2013:
Vol. 341 no. 6142
DOI: 10.1126/science.1225942
REVIEW
Injection-Induced Earthquakes
William L. Ellsworth

Abstract

Microearthquakes (that is, those with magnitudes below 2) are routinely produced as part of the hydraulic fracturing (or “fracking”) process used to stimulate the production of oil, but the process as currently practiced appears to pose a low risk of inducing destructive earthquakes. More than 100,000 wells have been subjected to fracking in recent years, and the largest induced earthquake was magnitude 3.6, which is too small to pose a serious risk. Yet, wastewater disposal by injection into deep wells poses a higher risk, because this practice can induce larger earthquakes. For example, several of the largest earthquakes in the U.S. midcontinent in 2011 and 2012 may have been triggered by nearby disposal wells. The largest of these was a magnitude 5.6 event in central Oklahoma that destroyed 14 homes and injured two people. The mechanism responsible for inducing these events appears to be the well-understood process of weakening a preexisting fault by elevating the fluid pressure. However, only a small fraction of the more than 30,000 wastewater disposal wells appears to be problematic—typically those that dispose of very large volumes of water and/or communicate pressure perturbations directly into basement faults.



Here is a bio on the author:
Dr. William L. Ellsworth

Photograph of Bill Ellsworth Bill Ellsworth is a seismologist interested in problems of seismicity, seismotectonics, probabilistic earthquake forecasting, and earthquake source processes. After graduating with a B.S. in Physics and M.S. in geophysics from Stanford University in 1971 he joined the earthquake research group at the U.S. Geological Survey in Menlo Park, California, which has been his professional home for the past 40 years. In 1974 he travelled east to the Massachussetts Institute of Technology, where he earned his PhD in geophysics in 1977. Bill's research focuses on questions of fault structure and earthquake source processes over a wide range of spatial and temporal scales. Over the course of his career, he has balanced his personal research with community service that has expanded opportunities and resources for seismology in the U.S. and around the world. He was a founder of the PASSCAL Program of IRIS, co-principal investigator of the San Andreas Fault Observatory at Depth (SAFOD) component of EarthScope, and currently serves on the steering committee of the Advanced National Seismic System (ANSS) and the National Earthquake Prediction Evaluation Council. Bill is a past President of the Seismological Society of America, a fellow of the American Geophysical Union, and recipient of the Distinguished Service Award of the Department of the Interior.

And no I didn't feel the earthquake last night because I'm not in OKC right now. Hope the house is ok.

[okie1962]

Eddie, don't confuse john with facts....

[StillwaterTownie]

Originally Posted by johnspecial

Oklahoma has always experienced quakes and we have had them at this magnitude long before fracking.

Oklahoma is just a quake prone state.

No, Oklahoma has not been a quake prone state with quakes of intensity one could feel or hear until in recent years. My mother knows that to be true even more than I do. She is 93 years old, lived in Oklahoma all her life, and didn't feel her first earthquake until the big 5.6 one happened in 2011. By the way, I didn't feel my first quake in Oklahoma until that 4.7 foreshock from the 5.6.

[dvxhd]

Originally Posted by johnspecial

An earthquake larger than any quake in Oklahoma occurred in AZ last month and where there is no fracking operations within 400 miles.

You don't have anything.

The earthquake you're referencing was a 5.2 in southeast Arizona. The 2011 Oklahoma earthquake registered 5.6. That's hardly larger than any quake in Oklahoma. If you want to compare the two states though, it's also noteworthy that at its closest point, Arizona is only 70 miles from a Pacific-North American tectonic plate boundary near the Gulf of California/Baja Peninsula. Arizona also has volcanic fields capable of producing new volcanoes. Despite this, Arizona still reports less seismic activity than Oklahoma.

[johnspecial]

Originally Posted by dvxhd

The earthquake you're referencing was a 5.2 in southeast Arizona. The 2011 Oklahoma earthquake registered 5.6. That's hardly larger than any quake in Oklahoma. If you want to compare the two states though, it's also noteworthy that at its closest point, Arizona is only 70 miles from a Pacific-North American tectonic plate boundary near the Gulf of California/Baja Peninsula. Arizona also has volcanic fields capable of producing new volcanoes. Despite this, Arizona still reports less seismic activity than Oklahoma.

man, all that fracking in Napa really caught up with them. But you would consider that natural, right? Even though we also are situated on several fault lines...I'm betting you would equate our earthquakes to activity from the oil and natural gas industry.

[johnspecial]

Originally Posted by StillwaterTownie

No, Oklahoma has not been a quake prone state with quakes of intensity one could feel or hear until in recent years. My mother knows that to be true even more than I do. She is 93 years old, lived in Oklahoma all her life, and didn't feel her first earthquake until the big 5.6 one happened in 2011. By the way, I didn't feel my first quake in Oklahoma until that 4.7 foreshock from the 5.6.

That's also not true. Oklahoma has been quake prone for thousands of years. This didn't start in your lifetime. Earthquakes normally happen in swarms. Those swarms can occur over years. Activity can also lay dormant for hundreds, even thousands of years.

[StillwaterTownie]

Originally Posted by johnspecial

That's also not true. Oklahoma has been quake prone for thousands of years. This didn't start in your lifetime. Earthquakes normally happen in swarms. Those swarms can occur over years. Activity can also lay dormant for hundreds, even thousands of years.

Once again, Oklahoma without a doubt, has not been an earthquake prone state for as long as people now living can personally remember. The one standout earthquake near El Reno in 1952 did not go on to start a long trend upward. Only since 2009, has Oklahoma suddenly become a very earthquake prone state, since it became a state, though. All you're trying to do is try to show that Oklahoma's distant earthquake past is coming back to unjustly haunt Oklahoma oil and gas well drilling companies. It's still a matter of scientific debate on whether Oklahoma's oil field activity is provoking Oklahoma's old fault lines. Or they're simply waking up totally due to long, pent up natural forces.

[johnspecial]

Originally Posted by StillwaterTownie

Once again, Oklahoma without a doubt, has not been an earthquake prone state for as long as people now living can personally remember. The one standout earthquake near El Reno in 1952 did not go on to start a long trend upward. Only since 2009, has Oklahoma suddenly become a very earthquake prone state, since it became a state, though. All you're trying to do is try to show that Oklahoma's distant earthquake past is coming back to unjustly haunt Oklahoma oil and gas well drilling companies. It's still a matter of scientific debate on whether Oklahoma's oil field activity is provoking Oklahoma's old fault lines. Or they're simply waking up totally due to long, pent up natural forces.

Wrong
Oklahoma Earthquakes Include Big One in 400 A.D. | News OK

[StillwaterTownie]

Originally Posted by johnspecial

Wrong
Oklahoma Earthquakes Include Big One in 400 A.D. | News OK

An interesting comment in reference to the 1952 El Reno earthquake made in the above article published in 1989:

"There's no reason to believe we couldn't have one that size or something somewhat larger," said James E. Lawson, chief geophysicist for the Oklahoma Geophysical Observatory at Leonard, south of Tulsa.

"Something like that could happen any time. One like that or bigger happens about once every century," Lawson said. "If they were a bit bigger, they could cause significant damage and some deaths."