Please click here for original article. [responsive][/responsive] Above: US Navy USS Jackson shock trial tests off Florida east coast.

On Saturday, the Geological Survey reported a 3.7 magnitude “earthquake” around 4 p.m. Saturday just east-northeast of Daytona Beach.

Officials said it was really triggered by a man-made explosion designed to test the new U.S. Navy combat ship, USS Jackson.

“The shock trials are designed to demonstrate the ship’s ability to withstand the effects of nearby underwater explosion and retain required capability.” according to a Navy statement.

Officials said a 10,000-pound explosive charge was detonated a few hundred yards from the vessel off Florida’s Atlantic coast.

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