A 3.7 magnitude earthquake recorded off the coast of Florida was likely triggered by a man-made explosion, in order to test the seaworthiness of a new US Navy vessel. Asked about the reported earthquake on Monday, a public information officer for the Navy's Sea Systems Command in Washington, DC said the agency was working on a statement it expects to release this week. The United States Geological Survey reported the 3.7 magnitude to have been detected by seismographs on Saturday afternoon, July 16, when it struck about 104 miles northeast of Daytona Beach. Seismographs as far away as Minnesota, Texas and Oklahoma reacted as well, as did others along the coasts of Florida, Georgia and North Carolina. A similar 3.7 magnitude "earthquake"was recorded on June 10, which happened at the same time the Navy reported conducting a shock