Sharp Rise In U.S. Earthquakes Directly Linked To Fracking Wastewater Reinjection

[limpyhobbler]

2. Yeah I was wondering about that too.

Don't know why they graphed it like that. Who counts cumulative earthquakes?

Here's a link from USGS. Seems like a pretty big increase.

The number of earthquakes has increased dramatically over the past few years within the central and eastern United States. More than 300 earthquakes above a magnitude 3.0 occurred in the three years from 2010-2012, compared with an average rate of 21 events per year observed from 1967-2000.

http://www.usgs.gov/blogs/features/usgs_top_story/man-made-earthquakes/



Mentally rotate the graph 45 degrees clockwise maybe? It's a flat line with an increase around 2009.

Also there seems to be a leveling off or decreased slope at the very far right side of the graph, around 2011. I'm guessing that's because people started complaining about earthquakes, so the industry started dialing down the injection pressure.