A Daily news digest by Jasper van Santen

Middle America Is Experiencing a Massive Increase in 3.0+ Earthquakes – The Atlantic

In News, Really?!? on April 7, 2012 at 21:02

Middle America Is Experiencing a Massive Increase in 3.0+ Earthquakes –

And yet……”The USGS scientists aren’t willing to draw the causal connection between fracking and earthquakes. “

A new United States Geological Survey study has found that middle America between Alabama and Montana is experiencing an “unprecedented” and “almost certainly manmade” increase in earthquakes of 3.0 magnitude or greater. In 2011, there were 134 events of that size. That’s six times more than were normally seen during the 20th century.

While the changes in the area’s seismicity began in 2001, the trend has really accelerated since 2009, the geologists note. That happens to coincide with increased oil and gas production using new extraction techniques in some parts of the area.

The conclusion that at least one environmental group has drawn from this data is that fracking, in one way or another, has caused these earthquakes. The Environmental Working Group notes that more than 400,000 wells were drilled between 2001 and 2010, a 65% increase over the previous ten-year period. They also note that the new extraction techniques require vast amounts of water to be injected into the ground: major producer Chesapeake estimates that it uses about 5 million gallons of water per well. Lots of wells plus lots of water injected underground could change the subterranean conditions and lead to more earthquakes.

The USGS scientists aren’t willing to draw the causal connection between fracking and earthquakes. “While the seismicity rate changes described here are almost certainly manmade, it remains to be determined how they are related to either changes in extraction methodologies or the rate of oil and gas production,” they conclude.

But if it is not fracking, then … What is it? At the moment, we don’t have a whole lot of other hypotheses, just a lot of unexplained earthquakes in places where they don’t normally strike.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s