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There are about 1,500 potentially active volcanoes worldwide and about 50 eruptions occur each year. But it’s still difficult to predict when and how these eruptions will happen or how they’ll unfold. Now, new insight into the physical processes inside volcanoes are giving scientists a better understanding of their behaviour, which could help protect the 1 billion people who live close to volcanoes. Dome-building volcanoes, which are frequently active, are among the most dangerous types of volcanoes since they are known for their explosive activity. This type of volcano often erupts by first quietly producing a dome-shaped extrusion of thick lava at its summit which is too viscous to flow. When it eventually becomes destabilised, it breaks off and produces fast-moving currents of hot gas, solidified lava pieces and volcanic ash, called pyroclastic clouds, that flow down the sides of the volcano at the speed of a fast train.

Mexico cityDistrito federalMount merapiIndonesia generalNevado de tolucaLuca caricchiThomas walterUniversity of potsdamUniversity of genevaProfessor thomas walterMount lascarProfessor luca caricchiமெக்ஸிகோ நகரம்திஸ்திரிதோ கூட்டாட்சியின்இந்தோனேசியா ஜநரல்நெவாடோ டி தொழுக