Earth's geoid, a measure of its shape based on the study of anomalies in the gravitational field at its surface, has a big hole in the Indian Ocean. A team of researchers may have figured out why.
A Ghost Ocean Might Have Dented Earth s Gravity yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.
The new study makes the case that the massive dip, called the Indian Ocean geoid low (IOGL), is made up of slabs from the long lost Tethys Ocean that sunk within the planet.