In 1992, two earthquakes, including the third strongest in the U.S. this century at 7.4 on the Richter scale, rocked southern California.

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There are many possible causes for such sounds, he said, including large waves, earthquakes, shifting sands in dunes or deserts, far off thunder or man-made sources like factories, explosions or sonic booms.

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The crew will carry out a series of scientific experiments, including geophysical studies to predict earthquakes and volcano eruptions.

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"Call of Duty: Ghosts" adds dynamic maps, including natural events such as floods and earthquakes and player-activated obstacles such as doors and explosive traps.

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There are also bonds that include risk from earthquakes and other potentially catastrophic events (including terrorist attacks, in some instances).

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San Francisco reportedly stopped its public transportation, including BART trains, a routine procedure implemented as a precaution during earthquakes.

CNN: 5.0 quake jolts Bay Area