Authorities have declared a state of emergency on a second Greek island as a series of earthquakes continued to rattle the south-eastern Aegean Sea region.

Since the end of January, the majority of Santorini residents have left the island by plane and ferry, as thousands of earthquakes continue to shake the region.

The emergency measure announced on the island of Amorgos follows a similar decision for nearby Santorini on February 7 after thousands of unusual tremors were registered in an undersea area

Santorini declares state of emergency amid earthquake swarm - Greece’s government has declared a state of emergency on Santorini

Scientists have detected several thousand earthquakes, the vast majority of them with small magnitudes, in just over two weeks near Greece’s volcanic island of Santorini

The Greek island of Santorini is still shaking. Tourists and locals have already fled to the mainland, while emergency services on site are ready to intervene. An earthquake was even felt in Athens. Daily tremors since early February have driven tourists and thousands of residents to flee the Aegean island of Santorini.

A 5.2 magnitude tremor has been detected between the Greek islands of Santorini and Amorgos — the most powerful recorded since activity started on on January 31.

Greece has declared a state of emergency on Santorini because of the hundreds of undersea earthquakes that have shaken the resort island for nearly a week

Seismologists have noted that the epicentre of the earthquakes is steadily drifting northward in the direction of Amorgos.

Since last week, thousands of residents have left the island by plane and ferry, as hundreds of earthquakes continue to shake the region.

The Greek island of Santorini was struck by the latest in a string of earthquakes Tuesday, this time a 4.8 temblor. The government said it will backstop the island destination's tourist industry.