Ringed around its summit are six cameras, a thermal imaging device and 12 seismological monitoring stations that operate 24 hours a day, all reporting back to an equipment-filled command center in …
MEXICO CITY — Mexico’s Popocatepetl volcano rumbled to life again this week, belching out towering clouds of ash that forced 11 villages to cancel school sessions.
The volcano is 45 miles southeast of Mexico City, but looms much closer to the eastern fringes of the metropolitan area of 22 million people. The city also faces threats from earthquakes and sinking soil, but the volcano is the most visible potential danger — and the most closely watched. A severe eruption could cut off air traffic, or smother the city in clouds of choking ash.
On a recent day, researcher Paulino Alonso made the rounds, checking the readings at the command center run by Mexico’s National Disaster Prevention Center, known by its initials as Cenapred. It is a complex task that involves seismographs that measure the volcano’s internal trembling, which could indicate hot rock and gas moving up the vents in the peak.
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