It is always humorous to California residents to
hear relatives and friends from out of state say they are never visiting
California because they are terrified of earthquakes; particularly
those living in the Southwestern region of the country that is regularly
devastated by extreme weather events such as tornadoes, droughts, and
floods. It is true that an earthquake can be a frightening event, but no
more so than the annual round of tornadoes in the so-called “tornado
alley” region in states such as Oklahoma. It is not uncommon for
Americans living in the tornado alley region to say they would rather be
terrified of tornadoes and flash floods than earthquakes in California,
but now they should be more terrified of increasingly common Oklahoma
earthquakes than the occasional California tremors to accompany their
fear of extreme weather events.
Last week the U.S. Geological Survey (USGS) and Oklahoma Geological Survey (OGS) issued an advisory warning of an increased likelihood of “damaging earthquakes”
as a result of the increased number of small and moderate shocks in
central and north-central Oklahoma. Both the USGS and OGS reported that
there have been a stunning 183 earthquakes of magnitude 3.0 and greater
in the Sooner state between October 2013 and April 2014. The two
agencies issued the warning advisory because the increase in the rate of
earthquakes above 3.0 on the Richter Scale since last October increases
the possibility of a “damaging” quake of 5.0 magnitude or higher in
central Oklahoma as a result of injecting chemical-laden water used in
hydraulic fracturing (fracking) of tight rock formations to “fracture”
rock deep underground to extract oil and gas.
To get an idea of the inordinate increase is seismic
activity in Oklahoma due to fracking, the long-term average between
1978 and 2008 was about two 3.0 magnitude earthquakes per year. In the
past 24 hours there were 5 significant (2.5 magnitude or greater) quakes
that accounted for 13% of the quakes worldwide. Oklahoma experienced
more earthquakes in 2014 than tremor-prone California that is also well
over twice the size of Oklahoma. In the jointly-issued warning advisory,
geologists identified the culprit as oil industry wastewater injected
into deep geologic rock formations that increases underground pressure,
lubricates faults, and causes earthquakes in a process geologists refer
to as “injection-induced seismicity.” That is right; geologists have named the cause of the earthquakes that are the result of hydraulic fracturing, or “fracking.”
Geologists have noted that the recent Oklahoma
earthquake rate changes are unrelated to typical random fluctuations in
natural seismicity rates. The area geologists warned is likely to
experience damaging earthquakes is situated under
the proposed path of the KeystoneXL pipeline set to carry bitumen-laden
tar sand renowned for ruptures without earthquakes, but that is
something Republicans beholden to the oil export industry are unlikely
to ever admit. In fact, the oil industry will not admit fracking has any
relationship to increased earthquake activity in any region much less
Oklahoma.
The oil industry claims, like BP after pouring 210
million gallons of crude oil into the Gulf of Mexico and along America’s
Gulf Coast, it is unfair to blame the uncharacteristically large number
of earthquakes on anything the industry is doing. According to the vice president of regulatory affairs for the Oklahoma Independent Petroleum Association, Brian Woodward, “Granted,
we’ve not seen this level of seismic activity in Oklahoma in the last
60 to 80 years and before that we don’t have a record. It causes us all
concern, but the rush to correlate this activity with our industry is
something we don’t believe is necessarily fair.” All that remains
is for some oil industry-funded repugican to issue a heartfelt apology
to the oil industry on the floor of the House or Senate for geologists
and geophysicists blaming the uncharacteristically high number of
earthquakes in Oklahoma on fracking. After the repugicans apologize,
there will be a Koch Industry-funded campaign to discredit geologists
and geophysicists as perpetrating a United Nations hoax to destroy the
American fracking industry.
Researchers have long known that high-pressure
fluid-injection operations (fracking) can trigger earthquakes, and in
central Oklahoma a cluster of four high-volume wastewater injection
wells triggered quakes up to 30 miles away, according to Katie Keranen a geophysicist at Cornell University in New York. Keranen said, “These
are some of the biggest wells in the state, and the pressure is high
enough from the injected fluids to trigger earthquakes that have since
spread farther outward, as fluids migrate farther from the massive
injection wells.” Fracking has already been linked to Oklahoma’s strongest recorded quake in 2011, as well as a spate of more than 180 smaller tremors in Texas between Oct. 30, 2008, and May 31, 2009.
In California, a state notorious for its labyrinth
of serious seismic faults is heading into early days of an extreme
drought unseen in well over 500 years, so repugicans and the oil
industry are waging a ferocious battle to stop a moratorium on fracking.
Besides increasing the risk of very substantial earthquakes from
fracturing deep rock formations, the oil industry is taking what little
precious water the state has for agriculture and drinking and mixing it
with toxic chemicals and injecting it into the ground directly over
fault lines up and down the state. The oil industry and repugicans are
particularly anxious to increase fracking along California’s pristine
coast and Central Valley that produces a large percentage of the
nation’s food source. Both areas are two of the hardest hit by the epic
drought that has officials considering rationing water for consumer use,
not to mention the state’s agriculture industry that is already paying
dearly for what precious little water the state’s reservoirs have left.
The practice of fracking is nearly free of
regulatory oversight due in large part to repugicans protecting the oil
industry despite the increased frequency of earthquakes in areas
virtually unknown for seismic activity. Also related to fracking is a
strong correlation between proximity to fracking wells and congenital
heart defects in newborns. According to a study
in Colorado, as the number and nearness of wells to a pregnant woman’s
home went up, so did the likelihood her newborn would develop a heart
problem. The study found that, “Births to mothers in the most exposed
tertile [an exposure level equal to 125 wells within mile of the home]
had a 30% greater prevalence of CHDs [congenital heart defects]…than
births to mothers with no wells within a 10-mile radius of their
residence.” Another study in Pennsylvania found that “proximity
to fracking increased the likelihood of low birth weight by more than
half, from about 5.6 percent to more than 9 percent. The chances of a
low Apgar score, a summary measure of the health of newborn children,
roughly doubled, to more than 5 percent.” Naturally, pro-fracking advocates scoffed at both studies and told mothers “to
ignore the reports and not to rely on these studies as an explanation
of why one of their children might have had a birth defect.”
As it turns out, Oklahoma residents should not fear
coming to California whatsoever. In fact, Oklahoma is much more
terrifying because although the Golden State has the occasional
earthquake, it does not have Oklahoma’s yearly tornadoes or the level of
fracking and earthquakes that prompted a warning from the USGS that the
“big one” is on the horizon. Sadly for Oklahoma residents, there is
little chance the repugican-controlled legislature or governor will
take steps to limit fracking and reduce the threat of damaging
earthquakes. Even though the oil industry and repugicans oppose a
moratorium on fracking in California, the people care about their
health, the environment, and their limited supply of drinking water and
with a large Democratic majority in both houses of the legislature and
governor’s office, the state’s biggest challenge is not fracking-induced
earthquakes; just a severe drought.
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