Saturday, September 24

Direct | New areas of La Palma evacuated after the arrival of the lava to La Laguna


The change in atmospheric conditions has led to air quality “moderately good” in areas close to the volcano, while the evacuation of more homes continues due to the advance of lava flows further to the northwest.

Specifically, and according to the latest data provided this Thursday by the Department of Homeland Security (DSN), this morning the evacuation of fifty homes located in the municipalities of Los Llanos de Aridane (Las Martelas) and Tazacorte (Marina Alta, Marina Baja, La Condesa and Cuesta Zapata). The residents in those population centers They have been summoned to concentrate on two sports facilities in Los Llanos de Aridane and Tazacorte.

Regarding air quality, the change in atmospheric conditions has favored that the level of suspended particles is not a concern, unlike previous days, so estimates generally point to “moderately good” air quality.

From the DSN they have also reported, that the area affected by the advance of the lava already amounts to 807.85 hectares with 1,132 buildings destroyed due to the advance of the washings, most of it for residential use.

Another data to highlight is the slight rebound in seismic activity in recent hours on the island, where they have been recorded 38 earthquakes since midnight, according to information from the National Geographic Institute (IGN). The largest magnitude, 4.3 and intensity IV, took place in Villa de Mazo, 37 kilometers deep, and was felt by the population. ANDThe highest magnitude, 4.3 and intensity IV, took place in Villa de Mazo, 37 kilometers deep, and it has been felt by the population.

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Since the La Palma volcano erupted a month ago, the residents of San Borondón, La Condesa, Marina Alta, Marina Baja and Tazacorte have been confined on several occasions until air conditions have allowed this measure to be lifted. In this situation, the authorities maintain the recommendation of the self-confinement of the neighbors and the use of FFP2 masks or higher in case of having to go outside.

Anomalies at sea

Chemical anomalies detected in the vicinity of the delta that has formed the volcano’s lava they are “not at all comparable” with the effects that were observed ten years ago with the birth of the underwater volcano of El Hierro, said the professor of Chemical Oceanography at the University of Las Palmas de Gran Canaria, Magdalena Santana.

It is “logical and normal” that these anomalies occur close to the interaction strip between lava flow and sea water.But they do not go “further”, said Santana, a member of the Quima group, specialized in acidification of the marine environment.

He explained that, in the case of El Hierro, the eruptive mouth was under water, where it started at about 350 meters deep, and the volcano grew to 88 meters below sea level, so that the gases that are now released into the atmosphere ten years ago left in the water.

A large part of these gases were solubilized, including sulfur, and that is why in El Hierro hydrogen sulfide was formed, which gave rise to a corrosive and “very acidic” environment, due to CO2 emissions, lowering the pH by three units.

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