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April 9, 2011
El Mayor-Cucapah earthquake anniversary
I have just returned from three weeks of field work at the site of a rather forgotten but significant earthquake that occurred one year ago last Monday, just south of the Mexico-U.S. border in Baja California del norte. At 3:40pm PDT last Easter Sunday (April 4, 2010), the ground beneath the Sierra El Mayor began to unzip. The seismic energy that was radiated outward continued rupturing roughly northwest-southeast oriented faults, …