The National Geographic Institute (IGN) has registered this Wednesday an elevation of the land of up to 6 centimeters in some points of the southwest of La Palma, a data that confirms to Canary Islands Now sources of the Volcanological Institute of the Canary Islands (Involcan). Also, this Wednesday some low-magnitude earthquakes have been registered at shallow depth (between one and three kilometers below the ground).
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Until this Tuesday, the elevation was 1.5 centimeters, then the IGN announced that “the GNSS network registered an accumulated deformation since the beginning of the seismic series. The geometric pattern of the deformation obtained is compatible with a pressure center located at the area where the seismicity is being located ”.
According to Involcan, the deformation is caused by magma “that is trying to rise to the surface.” This change in terrain is known as the “push zone”, the point where the greatest pressure is being exerted to exit.
The sources indicate that “it is necessary to continue observing the evolution of the seismic swarm and of the changes in the terrain”. However, they describe this process as “accelerated and energetic -which is releasing a lot of energy-“, so there is the possibility of an eruption, although they add that there is still no clear evidence that it is imminent. “We must continue to monitor,” they conclude.
Likewise, the Asociación Volcanes de Canarias explains on its Twitter account that “this process has already been experienced in El Hierro and it is normal in a process of volcanic reactivation”.
These data have also been confirmed by the scientific committee of the Special Plan for Civil Protection and Attention to Emergencies due to Volcanic Risk (Pevolca), which has recommended keeping the traffic light in yellow (risk level 2 on a scale of 4) and the situation of alert for the municipalities of the Cumbre Vieja, specifically Fuencaliente, Los Llanos de Aridane, El Paso and Mazo.
Up to 200 tremors in 12 hours on La Palma
La Palma continues to shake as a result of the seismic swarm recorded in Cumbre Vieja and the magma is approaching the surface. Throughout last night, in approximately 12 hours, the National Geographic Institute (IGN) has registered more than 200 events. During this period of time there have been up to five earthquakes at a depth of one kilometer, with a maximum intensity of 2.1 on the mbLg scale, and others of two and three kilometers, mainly in Fuencaliente and also in El Paso.
The earthquake of maximum intensity tonight, with a magnitude of 3.1, took place at 6:15 a.m. in El Paso, 9 kilometers deep, and has been felt by the population. The tremors have moved in a depth range of between 19 and a kilometer.