Video update here:
Kansas, not normally known for its seismic activity, is now showing up on the earthquake charts MUCH more frequently.
I did a full post yesterday covering the potential of larger seismic events in the Midwest, at the multiple frack well locations.
The fracking operations located in South Central Kansas have been producing some noteworthy earthquake activity. Multiple 3.0M – 4.0M earthquakes have occurred over the past several months.
Topping out today, October 2 2014, at 4.4 magnitude (so far, this is the largest earthquake in Kansas from fracking, and the largest Kansas earthquake in over 140+ years).
From the USGS in regards to this earthquake in Kansas… they mention ‘induced seismicity’ (fracking):
“Most of North America east of the Rocky Mountains has infrequent earthquakes. Here and there earthquakes are more numerous, for example in the New Madrid seismic zone centered on southeastern Missouri, in the Charlevoix-Kamouraska seismic zone of eastern Quebec, in New England, in the New York – Philadelphia – Wilmington urban corridor, and elsewhere. However, most of the enormous region from the Rockies to the Atlantic can go years without an earthquake large enough to be felt, and several U.S. states have never reported a damaging earthquake.
Earthquakes east of the Rocky Mountains, although less frequent than in the West, are typically felt over a much broader region than earthquakes of similar magnitude in the west. East of the Rockies, an earthquake can be felt over an area more than ten times larger than a similar magnitude earthquake on the west coast. It would not be unusual for a magnitude 4.0 earthquake in eastern or central North America to be felt by a significant percentage of the population in many communities more than 100 km (60 mi) from its source. A magnitude 5.5 earthquake in eastern or central North America might be felt by much of the population out to more than 500 km (300 mi) from its source. Earthquakes east of the Rockies that are centered in populated areas and large enough to cause damage are, similarly, likely to cause damage out to greater distances than earthquakes of the same magnitude centered in western North America.
Most earthquakes in North America east of the Rockies occur as faulting within bedrock, usually miles deep. Few earthquakes east of the Rockies, however, have been definitely linked to mapped geologic faults, in contrast to the situation at plate boundaries such as California’s San Andreas fault system, where scientists can commonly use geologic evidence to identify a fault that has produced a large earthquake and that is likely to produce large future earthquakes. Scientists who study eastern and central North America earthquakes often work from the hypothesis that modern earthquakes occur as the result of slip on preexisting faults that were formed in earlier geologic eras and that have been reactivated under the current stress conditions. The bedrock of Eastern North America is, however, laced with faults that were active in earlier geologic eras, and few of these faults are known to have been active in the current geologic era. In most areas east of the Rockies, the likelihood of future damaging earthquakes is currently estimated from the frequencies and sizes of instrumentally recorded earthquakes or earthquakes documented in historical records.
As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth’s crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations. In much of eastern and central North America, the number of earthquakes suspected of having been induced is much smaller than the number of natural earthquakes, but in some regions, such as the south-central states of the U.S., a significant majority of recent earthquakes are thought by many seismologists to have been human-induced. Even within areas with many human-induced earthquakes, however, the activity that seems to induce seismicity at one location may be taking place at many other locations without inducing felt earthquakes. In addition, regions with frequent induced earthquakes may also be subject to damaging earthquakes that would have occurred independently of human activity. Making a strong scientific case for a causative link between a particular human activity and a particular sequence of earthquakes typically involves special studies devoted specifically to the question. Such investigations usually address the process by which the suspected triggering activity might have significantly altered stresses in the bedrock at the earthquake source, and they commonly address the ways in which the characteristics of the suspected human-triggered earthquakes differ from the characteristics of natural earthquakes in the region.”
M4.4 – 11km ESE of Harper, Kansas 2014-10-02 18:01:24 UTC
- 2014-10-02 18:01:24 UTC
- 2014-10-02 13:01:24 UTC-05:00 at epicenter
- 2014-10-02 13:01:24 UTC-05:00 system time
37.242°N 97.903°W depth=5.0km (3.1mi)
As we saw in Arkansas, Oklahoma, and Colorado … the 4.0M+ events eventually give way to GREATER earthquakes in the 5.0M+ range.
A 5.0M struck Arkansas at their fracking operations, additionally a 5.0M struck the Oklahoma fracking ops, then a 5.0M struck the Colorado fracking ops, finally culminating when a 5.9M struck Virgina near a fracking operation.
All the aforementioned 5.0M+ earthquakes occurred in 2011, within months of each other.
The larger movement was PRECEDED by 3.0M and 4.0M activity, just as we are seeing today in Kansas.