Mystery of Weird Hum Heard Around the World Solved

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  • #248623

    Judi Lynn
    • Total Posts: 4,297

    By Laura Geggel – Associate Editor a day ago

    Mysterious seismic hums detected around the world were likely caused by an unusual geologic event — the rumblings of a magma-filled reservoir deep under the Indian Ocean, a new study finds.

    These odd hums were an unconventional geologic birth announcement. A few months after the sounds rippled around the Earth, a new underwater volcano was born off the coast of the island of Mayotte, located between Madagascar and Mozambique in the Indian Ocean.

    The new findings provide a detailed, one-year timeline of the newborn volcano’s birth, which would make any mother (in this case, Mother Earth) proud. The study details how magma from a reservoir about 20 miles (35 kilometers) under the ocean floor migrated upward, traveling through Earth’s crust until it reached the seafloor and created the new volcano.

    “It took only [a] few weeks for the magma to propagate from the upper mantle to the seafloor, where a new submarine volcano was born,” study lead researcher Simone Cesca, a seismologist at the GFZ German Research Centre for Geosciences in Potsdam, Germany, told Live Science in an email.


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