Drone sweeps over sizzling lava stream from the Cumbre Vieja volcano as its activity shows no sign of stopping.
The Associated Press
But despite recent technological and scientific leaps, the researchers can only do a lot of estimating of what happens in the underworld where magma is formed and melts any human-made equipment. The deepest that humans have been able to drill into the planet’s crust has been just over 12 kilometers , a feat that Soviet scientists achieved in 1989.
Still, trying to compare notes with previous eruptions involves delving into centuries-old records, some from a time when photography did not exist. The European Union's Copernicus satellite program has produced high-resolution imagery and mapping of the island to track quake-induced deformations, leading to near real-time tracking of lava flows and ash accumulation. Its experts have also been able to observe how large plumes of sulfur dioxide, a toxic gas, have traveled long distances across North Africa, the European mainland and even as far as the Caribbean.
Despite its limited resources, Involcan has been producing daily reports that help civil protection authorities on La Palma decide whether to evacuate or issue lockdowns when gas concentrations become too toxic. That means analyzing terabytes of data, both from automatic detectors in strategic locations and from samples recovered in field trips.
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