Greece’s government declared a state of emergency on Santorini on Thursday after hundreds of undersea earthquakes shook the resort island for nearly a week. The ministry of civil protection’s announcement will provide authorities faster access to state resources.

More than 11,000 people have already left the island of Santorini following a series of tremors in recent days.

Since Sunday, hundreds of near-constant tremors have been recorded in the sea between Santorini and the island of Amorgos, the strongest measuring a magnitude of 5.2 on Wednesday night.