By CHRISTIN COYNE
Northeast Parker County residents may not have felt an earthquake since Jan. 28, when a magnitude 2.5 earthquake struck the area, but that doesn’t mean the ground isn’t still shaking in the area.
Terming it an “ongoing earthquake sequence” in the Reno and Azle area, the North Texas Earthquake Study Team, comprised of researchers from Southern Methodist University, the U.S Geological Survey and the University of Texas, released an earthquake study progress report Wednesday, stating that smaller seismic events continue to occur.
In an effort to obtain more information, researchers began placing monitoring equipment in the area in December after noticeable earthquakes began shaking the ground around Reno and Azle in November 2013 and continued through January.
“The network has recorded over 300 earthquakes large enough to be recorded on multiple stations since December 2013 and thousands of very small events during periods of swarm activity,” the progress report states.
There have been weeks with few to no earthquakes, while hundreds of events have occurred in a day, according to SMU researchers.
Earthquakes in December and January were located north of Reno and Azle, according to researchers, while “recent activity has occurred near the City of Reno and continues in the original source zone.”
Researchers haven’t determined whether waste-water fluid injection wells are linked to the seismic activity but do say that some of the earthquakes have occurred within 1-2 kilometers of salt water disposal wells.
They are continuing to collect data, and will continue to run the temporary seismic network, but expect to provide peer-reviewed results of their study in the future, according to the report.
The report can be found online at: http://smu.edu/smunews/earthquakestudy/RenoAzle.MayProgressReport.NorthTexasEarthquakeStudy.pdf