Dr. Justin Rubinstein, Research Geophysicist and Deputy Chief of the USGS Induced Seismicity Project
The United States is experiencing an unprecedented surge in earthquakes that began in 2009, rising from an average of 21 magnitude 3 and larger quakes to over 650 in 2014. This increased earthquake activity is found in just a few concentrated regions around the country, with the lion’s share in Oklahoma. In 2014 there were more magnitude 3 and larger earthquakes in Oklahoma than there were in California. The increased earthquake activity is limited to areas of new and emerging oil and gas production, and is undoubtedly caused by some of the techniques being used.