I had no idea that gravity on earth fluctuated that much.

The Indian Ocean has low density matter beneath it that causes it to be 100m lower than if it were average gravity at sea level.

Giant ‘Gravity Hole’ in the Ocean May Be the Ghost of an Ancient Sea:
https://www.scientificamerican.com/article/giant-gravity-hole-in-the-ocean-may-be-the-ghost-of-an-ancient-sea1/

#News #Newstodon #NewsTooter #Science #GravityHole

Giant ‘Gravity Hole’ in the Ocean May Be the Ghost of an Ancient Sea

A vast expanse of the Indian Ocean is a staggering 100 meters lower than the global average sea level because of a major dip in Earth’s gravity. Scientists now think they know the cause

Scientific American

@C_Miller I think acceleration due to gravity at the elipsoid is about 980 gal (cm/sec²)

Anomalies are on the order ±50 milligal so about 0.005%?