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Salon
Science
Matthew Rozsa

Indian Ocean gravity hole explained

There is a place on Earth where the laws of gravity as we know them do not apply. Officially known as "the Indian Ocean geoid low" (IOGL), it is informally referred to as the Indian Ocean gravity hole. At the IOGL, the sea level dips by a staggering 328 feet (100 meters) and Earth's gravitational pull is weaker. This anomaly has baffled scientists for years — but experts from the Indian Institute of Science in Bengaluru, India believe they have solved the puzzle.

It turns out, it all comes down to liquid hot magma.

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