The Chandler wobble or Chandler variation of latitude is a small deviation in the Earth's axis of rotation relative to the solid earth, which was discovered by and named after American astronomer Seth Carlo Chandler in 1891. It amounts to change of about 9 metres (30 ft) in the point at which the axis intersects … See more The existence of Earth's free nutation was predicted by Isaac Newton in Corollaries 20 to 22 of Proposition 66, Book 1 of the Philosophiæ Naturalis Principia Mathematica, and by Leonhard Euler in 1765 as part of his … See more Since the Earth is not a rigid body, the Chandler wobble should die down with a time constant of about 68 years, a very short period compared to geological timescales. The … See more • Milankovitch cycles • United States Naval Observatory See more • Mystery of wobbly Earth solved, July 19, 2000 • Free Precession of Earth See more The International Latitude Observatories were established in 1899 to measure the wobble as observed in latitude determinations. These provided data on the Chandler and annual wobble for most of the 20th century, though they were eventually … See more Using radio tracking observations of the Mars Odyssey, Mars Reconnaissance Orbiter and the Mars Global Surveyor spacecraft, the Chandler wobble of Mars has been detected. … See more • Carter, B. and M. S. Carter, 2003, "Latitude, How American Astronomers Solved the Mystery of Variation," Naval Institute Press, Annapolis. • Gross, Richard S (2000). See more WebApr 8, 2016 · One particular wobble in Earth's rotation has perplexed scientists since observations began in 1899. Every six to 14 years, the spin axis wobbles about 20 to 60 inches (0.5 to 1.5 meters) either east or west of its general direction of drift. "Despite tremendous theoretical and modeling efforts, no plausible mechanism has been put …

Polar motion - Wikipedia

WebAug 1, 2000 · The Chandler wobble is an excited resonance of the Earth's rotation having a period of about 14 months. Although it has been under investigation for more than a century, its excitation mechanism has remained elusive. Here, the angular momentum of the atmosphere computed from the products of a numerical weather prediction analysis … WebJul 8, 2005 · The cause- or causes-of the excitation of the Chandler wobble is one of the most intriguing problems in geophysics. As a result of one of the most valuable examples of an international programme, the positions of the pole have been determined since the late 19th century with remarkable accuracy. These data have always been accepted as of … lowes gas stoves maytag

Chandler Wobble: Why Earth Wobbles Like a Toy Top

WebApr 3, 2024 · The raw IERS measurements are the interference between the annual wobble with the Chandler wobble (with a ~6.4 year beat pattern) while the factored Chandler wobble will show the interference between half the nodal cycle and a semi-annual impulse (the faster cycles of 433 days) along with the 9.3 year envelope. WebThe Chandler wobble is a periodic change in the orientation of the Earth's rotation axis. It has a period of 434.3 ± 2.2 sidereal day s, and corresponds to a shift of 5 meters () at the … WebSep 2, 2009 · The Chandler Wobble is one of the main components of the movement of the Earth's axis of rotation relative to the surface of the Earth. Because the axis passes through the polar regions, this ... james taylor line them up