The scene of the eruptive process that began on La Palma on September 19 is far from the persistent stability that is required to talk about the final phase being close, said this Saturday the scientific spokesperson for the Canary Islands Volcanic Emergency Plan ( Pevolca), Carmen López.
After the Pevolca meeting, Carmen López and its technical director, Miguel Ángel Morcuende, explained that seismicity has decreased and the deformation of the ground has reversed, while the emission of sulfur dioxide has decreased, but it is necessary that these episodes descend persistently.
Carmen López has reiterated that to talk about entering a final phase it is necessary that the levels of sulfur dioxide emission are low or very low and now they are high, and in terms of seismicity she has indicated that it has decreased in recent years. days, but a few days ago something similar happened and then it was strong again.
In this way, it is necessary for the intermediate seismicity to continue decreasing and the deep one to weaken more, but “rather than weaken you” what is needed is that these periods of stability be persistent.
Miguel Ángel Morcuende has stated that although yesterday in the southern zone there was a favorable situation of the presence of gases early in the morning and residents and irrigators were allowed to enter the exclusion zone, it was necessary to carry out their evacuation due to the reactivation of the eruptive focus.
A high gas emission that continues this Saturday, the day on which a southern wash has been reactivated, the one that arrives through the Cogote mountain, which was heading towards the La Majada road, where it advances slowly because it has swallowed enough buildings and has increased its viscosity.
Miguel Ángel Morcuende has pointed out that the feeding of lava is carried out by lava tubes, especially those of flows 7, 8 and 10, but it is “scarce” compared to other days.
Regarding evacuees, it has indicated that there are 43 dependent people who are in social health centers on the island, and 553, five more than yesterday, in hotels, of which 407 are in Fuencaliente, 71 in Los Llanos de Aridane and 75 in Breña Baja.
The area affected by the lava flows amounts to 1,146 hectares, 2 more than on Friday, and there are 350 hectares affected by the lava, 1.53 more than yesterday, and of these 217.37 correspond to banana trees, 61.2 to vineyards, and 26.72 to avocados. In addition, 412 hectares of banana trees, 128 of vineyards and 84 of avocados are affected by ash.
Carmen López also noted that yesterday there was a fissure with central sinking in a north-south direction about 100 meters away and south of the central building of the volcano, but no gases or anomalies have been detected. The north wind predominates with gusts of 50-55 kilometers / hour and the forecast is that the volcano plume will not pose a problem for aeronautical operations, something that is expected to continue for another 72 hours.
He has also referred to the entry of Saharan dust to the Canary Islands, which will cause an increase in PM10 particles until Mars or Wednesday. And it has partially reversed the deformation of the terrain that had been detected in the station near Jedey, while there is stability in the rest of the network, with some stations showing slight deflations.
Regarding the emission of sulfur dioxide associated with the plume, it remains in high ranges although it continues to reflect the downward trend that began on September 23, and the diffuse emission of carbon dioxide continues with stable values since November 15 . Air quality has been in the reasonably good to fair range, and there was an upward trend in PM2.5 yesterday.