In an article published late last month in the journal Nature Communications, researchers at Southern Methodist University pointed to hydraulic fracturing activities as the probable cause of an increase in earthquakes near Azle, Texas, based on a study they had conducted in the area. The researchers’ conclusion conflicts with the stance of the U.S. Geological Survey that the cause of the earthquakes is inconclusive.
In the study, the SMU researchers analyzed data from the U.S. Geological Survey’s National Earthquake Information Center, which reported that from early November 2013 through January 2014, there were 27 earthquakes near the cities of Azle and Reno, Texas. Since 2008, the northern region of Texas has experienced four swarms of earthquakes, with 130 total quakes. Most of the earthquakes have been relatively small, but citizens have expressed concern about the uptick, particularly since the U.S. Geological Survey reports that the area had only one recorded earthquake in the 58 years before 2008. In the article summarizing the findings of their study, the SMU researchers stated that “while some uncertainties remain, it is unlikely that natural increases to tectonic stresses led to these events.” Continue Reading