Earthquakes rattled Greece's volcanic island of Santorini every few minutes through the night and into Wednesday as authorities bolstered their emergency plans in case the hundreds of temblors over the past few days are a harbinger of a larger quake to come.

Experts say the Greek island of Santorini has been hit by more than 1,000 earthquakes, but they're not linked to the region's active volcanoes.

Greece is preparing for any scenario but experts are optimistic about the tremors that triggered an exodus of residents and visitors from the Aegean Sea island of Santorini.