A volcanic island in Portugal has had more than 20,000 earthquakes in 11 days

2022-09-16 0 By

A Portuguese volcanic island has been hit by more than 20,000 small earthquakes in 11 days, similar to a sudden surge in seismic activity before the eruption of Spain’s Old Mount Cumbray last year, volcanology experts warned Tuesday.Portugal’s Seismological and volcanic Monitoring Center said more than 20,000 small earthquakes had been detected in the central Azores island of St. Jorge since Sunday night, with frequent seismic activity.The strongest one occurred on the night of May 29, reaching a magnitude of 3.8.Portugal’s Institute of Marine and Atmospheric Research has slightly different monitoring data, indicating that the night of the 29th Saint Jorge island earthquake reached magnitude 4.From previous experience, hundreds or even thousands of sudden earthquakes around volcanoes are typical precursors of volcanic eruptions.So while days of small earthquakes have caused no injuries or damage, residents of St. Jorge island are still fearful of the island’s first volcanic eruption since 1808.Volcanologists in Portugal say the island is highly seismically active, similar to the quakes that preceded the eruption of mount Kumbray.The old Kumbray volcano is located on the island of La Palma, northwest of the Canary Islands, about 1,400 km southeast of the Azores.On December 13, 2021 (local time), the Old Cumbray Volcano in Spain continued to erupt, spewing out hot lava.The volcano continued to erupt for nearly three months from September last year, causing no immediate casualties but damaging some 3,000 buildings and large areas of farmland, forcing thousands of residents to evacuate their homes.The Volcanic institute of the Canary Islands has closely monitored the eruption of Mt. Kumbray.The institute estimated that if the volcano erupts, the volume of lava could reach 20 million cubic meters.The director of the Canary Islands’ Institute of Volcanology, Luca Doriya, told the media that soil deformation caused by volcanic activity on Saint Jorge has been detected and that “either nothing will happen or there will be an eruption”.