Geology

sgibson5150, 10 months ago in Giant ‘Gravity Hole’ in the Ocean May Be the Ghost of an Ancient Sea

As a result of the low pull of gravity there, combined with the higher gravitational pull from the surrounding areas, the sea level of the Indian Ocean over the hole is a whopping 106 meters lower than the global average...

I'm having trouble wrapping my noggin around this and the article doesn't appear to address it. Wouldn't less gravity result in a higher sea level? 🤔

uselessartifact, 10 months ago

I would think the higher gravity of the surrounding areas would be pulling the water away from the lower gravity area, causing a lower sea level there.

sgibson5150, 10 months ago

Interesting. You might be right.

I've asked a scientist friend for their input. If they reply, I'll update my original comment.

Girlparts, 10 months ago

What they are doing is measuring (more or less) change of densities in rock. So the highs are your dense rocks and the lows are less dense rocks

Girlparts, 10 months ago

The gravity is measuring the density of rocks and a gravitational low means less dense rocks are present there.
The gravity low has been speculated about for awhile the paper outlines a new theory