HE Nevado del Ruiz volcano more than two weeks to complete orange warning. Before possibility of redness, 22 municipalities activated their risk management plans due to the threat. Even in five towns, special caution and evacuation measures have already been defined. These are Villamaría in Caldas and Casabianca, Herveo, Murillo and Villahermosa in Tolima.
(Read: Nevado del Ruiz Volcano: These are evacuation routes in the event of a possible eruption)
As prevention plans progress, Colombian Geological Service (SGC) continues to monitor Volcano’s activity 24 hours a day and they have already stated that His activity has changed in recent days.
Initially, seismicity was characterized by rock fracture, that is, when magma tries to move or move towards the crater. And now, “the magma has arrived where it should have come, three kilometers deep into the volcano, merging with another magmatic layer below the crater, so conditions are changing,” he explained. John Makario Londono Director of SGC Geothreats.
(Also: Nevado del Ruiz: Volcanic Ash threatens coffee and potato crops in Tolima)
Londoño pointed out that although seismicity has decreased, this does not mean that the alarm is over. “This doesn’t mean the volcano is back to normal, on the contrary, there is now magma that is closer to the volcano and interacting with other magma there.”
The expert pointed out that the activity of the volcano requires more attention due to the liquids and temperature inside the crater. “They start to interact more with the other systems that the ware has, namely the hydrothermal portion. The heat from the magma starts to interact and the steam columns become much larger because of the amount of sulfur dioxide it has.” .
As a result, Londoño said the volcano shows a few anomalies and is hotter, so the probability of eruption persists as days or weeks. But he reiterated that this doesn’t necessarily happen, as magma can start to cool.
(Also: Nevado del Ruiz Volcano: Why do they want to wear face masks in Manizales?)
Londoño explained that each volcano has its own dynamics. In the case of Nevado del Ruiz, the expert said, his quirks complicate it. For 10 years it made small eruptions or magma pulses approaching the crater.
“It’s not easy to compare it to other volcanoes,” he added.
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SGC’s director of Geohazards also explained that both earthquakes and temperatures are dangerous. He noted that the earthquakes that occurred were recorded relatively far from the crater of the volcano, 4 kilometers away, pushing magma. And he reiterated that the interaction of magma with liquids is the most worrying thing right now. For these reasons, the volcano is still on orange alert.
He added that it is important to study the changes the volcano shows and that at best the magma may stay there and not come out.
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Source: Exame
