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Secret eruption offers tantalizing glimpse of underwater volcanoes

Frothy rock floating on the ocean near Papua New Guinea is the sign scientists needed that, hidden from view, an underwater volcano was erupting

A recent underwater volcanic eruption near Papua New Guinea has provided scientists with a rare opportunity to observe this hidden geological phenomenon. The eruption, detected through a series of earthquakes and satellite imagery, released frothy pumice that floated on the ocean's surface. This type of volcanic activity, which occurs along the mid-ocean ridges, is much more common than terrestrial eruptions but remains largely unseen.

Scientists are eager to study the pumice, which forms when gas-rich magma cools rapidly, as it can provide insight into the eruption's scale and characteristics. The unusually complex tectonic setting has made pinpointing the exact location of the eruption challenging. However, recent mapping efforts have provided a baseline for comparison once the eruption subsides.

Changes on the seafloor, such as new cones or craters, could be seen, along with unique pillow lava formations. The eruption will also allow scientists to estimate the eruption's size using satellite data. This remarkable scientific opportunity, according to one volcanologist, is a "barely scratched the surface" moment in the field of submarine volcanism.

Written by urgent.news from Scientific American's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.

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