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A comment on Why Our Intuition About Sea-Level Rise Is Wrong. Parent comment

Re:Why Our Intuition About Sea-Level Rise Is Wrong by KineticLensman on Tuesday June 02, 2020 @08:59AM (#23390501)
> I actually have no idea how large the differences in the distance from the core to the water surface is in different parts of the world

Taking the core to be a point, the distance to the sea's surface would depend on factors such as

* The earth’s variation from a pure sphere (6,378.137 km (3,963.191 mi) at the Equator and 6,356.752 km (3,949.903 mi) at the poles) [0, 1]

* The local depth of the sea (up to 10,984 metres for the Mariana Trench [2])

* Tidal effects [3]

[0] https://en.wikipedia.org/wiki/Spheroid

[1] https://en.wikipedia.org/wiki/Figure_of_the_Earth

[2] https://en.wikipedia.org/wiki/Mariana_Trench

[3] https://en.wikipedia.org/wiki/Tide

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Re:Why Our Intuition About Sea-Level Rise Is Wrong by hansbo on Tuesday June 02, 2020 @09:07AM (#23390566)
And, I suppose, the centripetal force caused by the rotation. But maybe that is the whole reason for earth being a spheroid?

And correct me if I'm wrong, but the local depth of the sea should not matter, as water would fill the depth before the levels stabilized. But perhaps the local volume of the water affects the size of the effects of tidal forces and local land mass.

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