QUESTION OF THE MONTH
CALLUM REID, SUNDERLAND
WHAT WOULD HAPPEN IF ALL VOLCANOES ON EARTH ERUPTED AT ONCE?
There are about 1,500 potentially active volcanoes around the world. To a scientist though, a volcano counts as active if it has erupted in of material flung into the air, and each successive number corresponds to 10 times more ejected material. The largest eruption ever recorded was Mount Tambora in 1815, with a VEI of 7. The explosion could be heard 2,600km away and more than 160km of material was thrown into the atmosphere. This single volcano caused temperatures in the northern hemisphere to drop by 0.5°C for six months, as dust blocked out the Sun. The year 1816 was dubbed ‘the year without a summer’ and, combined with disrupted rainfall patterns, caused harvests around the globe to fail.
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