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62 Pompeii earthquake
The 62 Pompeii earthquake occurred on 5 February 62 AD. It had an estimated magnitude of between 5 and 6 and a maximum intensity of IX or X on the Mercalli intensity scale. The towns of Pompeii and Herculaneum were severely damaged. The earthquake may have been a precursor to the eruption of Mount Vesuvius in AD 79 that destroyed the same two towns. The contemporary philosopher and dramatist Seneca the Younger wrote an account of the earthquake in the sixth book of his ''Naturales quaestiones'' entitled ''De Terrae Motu'' (''Concerning Earthquakes'').
==Geological setting==
The epicentre of the earthquake lies within a zone of active extensional faulting, but close to the southern flank of Vesuvius. Analysis of focal mechanisms from the area around Vesuvius indicates that active faulting in the area involves NW–SE and NE–SW trending oblique-slip normal faults and E–W trending normal faults, part of the zone of active extension that extends the full length of the Apennines mountain chain, associated with continued opening of the Tyrrhenian Sea. An association between earthquakes in the central Apennines and eruptions of Vesuvius has been proposed, but is not yet proven.
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