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Giant ‘gravity hole’ in Indian Ocean
July 12 , 2023
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- Researchers at the Indian Institute of Science have revealed the secrets of the giant gravity hole in the Indian Ocean.
- It is known as the Indian Ocean Geoid Low (IOGL).
- Discovered in 1948, just south of Sri Lanka, by Dutch geophysicist Felix Andries Vening Meinesz.
- It covers over two million square miles and sits around 600 miles beneath the Earth's crust.
- The huge anomaly has significantly lower gravity than the average.
- The presence of lighter materials in the upper to mid-mantle, were responsible for the gravity low in this region.
- This mantle structure beneath the Indian Ocean was probably produced by the leftovers of a long-lost Tethys Ocean's seabed.
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