equatorial bulge


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equatorial bulge

[‚e·kwə′tȯr·ē·əl ′bəlj]
(geodesy)
The excess of the earth's equatorial diameter over the polar diameter.

equatorial bulge

The difference between the diameters of the earth at the equator and the poles. Because of this, the earth is an oblate spheroid.
References in periodicals archive ?
But as the planet slows down, it causes the equatorial bulge to collapse which puts enormous pressure on the tectonic plates.
A comparison of this model with the planet's known mass, radius, surface temperature, gravity and equatorial bulge implies that Jupiter's core is an Earth-like rock 14 to 18 times the mass of Earth, or about one-twentieth of Jupiter's total mass, according to Militzer.
As the spin axis drifts, this equatorial bulge also migrates.
16 SCIENCE, Coffey and his colleagues applied their visualization technique to a simplified set of equations that included deviations caused only by the Earth's equatorial bulge.