Eli5 Geoid low Indian Ocean

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Can someone explain how there can be a low spot in an ocean? I understand there is lower gravity there, but I just don’t understand how water could have a low spot. It is visible from space? I don’t get it.

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Anonymous 0 Comments

The Earth is less dense there, so their less gravity pulling down on the water there, and more gravity pulling away. You would not be able to notice this from space even with highly sensitive equipment.

Hudson Bay in Canada is in a similar situation.

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