Aftershock to Mexico’s March Earthquake Reaches M6.0


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Location of Mexico's April 2 M6.0 aftershock (Image from USGS)

Another in a series of significant earthquakes has struck along the coastal region of Mexico. Data from the United States Geological Survey (USGS) show that the most recent event, a magnitude 6 (M6.0) occurred on April 2, 2012 in the country’s Oaxaca region with an epicentre some 210 miles from Mexico City. At the time of writing, no damage or injuries were being reported.

Recent Mexico Earthquakes

Since the M6.5 event which struck on 11 December, 2011, Mexico’s coastal region has been affected by a number of earthquakes of M5.0 or greater: the most recent is the largest aftershock to date following the most significant tremor of March 24 which attained a magnitude of 7.4, making it one of the largest recorded in the country’s history. The April 2 event is the third to reach M6.0 or more.

The USGS maintains a historical list of earthquakes, which make it possible to study the geological history of a region. According to this list, these three events and the many which accompanied them (dozens of smaller foreshocks and aftershocks of M4-M5 have been recorded) have epicentres along the coastal strip, and all have occurred at relatively shallow depths, typically between 10-20km.
Click to Read Page Two: Causes of Mexico’s Quakes

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