Concern in the Ebro Delta over a series of small earthquakes allegedly due to a gas offshore platform
A series of earthquakes measuring between 2 and 4.2 on the Richter scale have been affecting the coast of southernmost Catalonia and northernmost Valencia in the last few weeks but particularly since last weekend. All the evidence suggests that the Castor offshore gas reservoir is behind the earthquakes. In 2009, the Spanish Government approved the building of an underground gas reservoir located under the sea bed, some 20 kilometres offshore from the Ebro Delta and Vinarós, using the cavity in the rock from a former oil field. Madrid approved the project without an earthquake risk report, despite a formal petition from the Catalan Government. Now, geologists, the Spanish Industry Ministry and the company admit that the injection of gas into the rock could be triggering the earthquakes. Activities have been stopped and the Public Prosecutor’s Office is investigating the case.