Chandler wobble
Chandler wobble The free oscillation of the Earth's pole of rotation. This wobble in the Earth's rotation has a 435-day periodicity and appears to have a decay time of the order of 40 years. The cause (excitation) is unknown: atmospheric effects appear to be on too short a time scale; earthquake activity has been proposed, but has not been established. The major cause appears to be related to the Earth's core and its magnetic coupling with the lower mantle.
More From encyclopedia.com
Hollow Earth , Edmund Halley (1656–1742) is best known for having calculated the orbit of a comet that passes by Earth every 76 years. The comet known as Halley's m… Gaia Hypothesis , The Gaia (pronounced guy-ah) hypothesis is the idea that Earth is a living organism and can regulate its own environment. This idea argues that Earth… Earth , Imagine that you are describing planet Earth to someone who has never seen it. How would you describe its appearance? What would you say about it? Wh… Meteor , meteor, appearance of a small particle flying through space that interacts with the earth's upper atmosphere. While still outside the atmosphere, the… Planetary Science , CONCEPT
The term planetary science encompasses a whole range of studies involving a combination of earth sciences and astronomy. Sometimes known as p… Planet Earth , Earth, Planet
Earth is the third of nine planets in our solar system . Its surface is mostly water (about 70%), and it has a moderately dense nitroge…
You Might Also Like
NEARBY TERMS
Chandler wobble