Search results
Results From The WOW.Com Content Network
The Chandler wobble or Chandler variation of latitude is a small deviation in the Earth's axis of rotation relative to the solid earth, [1] 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 the Earth's surface and has ...
In 1891, within months of Seth Carlo Chandler's discovery of the 14-month variation of latitude, now referred to as the Chandler wobble, Newcomb explained the apparent conflict between the observed motion and predicted period of the wobble. The theory was based on a perfectly rigid body, but Earth is slightly elastic.
The amplitude of the Chandler wobble, however, varies by a factor of three, and its frequency by up to 7%. Its maximum amplitude during the last 100 years never exceeded 230 mas. The Chandler wobble is usually considered a resonance phenomenon, a free nutation that is excited by a source and then dies away with a time constant τ D of the order ...
This minuscule change in time means we might need to consider a negative leap second.
The “Chandler Wobble” – a natural shifting of the Earth’s axis due to the planet not being perfectly spherical – could be linked to the spinning speeds, timeanddate.com reported.
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 the Earth's surface and has a ...
She has also examined how earthquakes [5] and the drift of the Earth's pole [6] interact with the Chandler wobble, and the heterogeneous nature of the mantle and how it interacts with the surface topography of Earth. [7] Used a top-down [8] and bottom-up approach to determine the changing rotation of the inner core.
This method only provides the position in two coordinates and is more difficult to use than GPS. However, it is useful for measuring motions of the Earth such as nutation and Chandler wobble. Relative positions of two or more points can be determined using very-long-baseline interferometry. [39] [40] [41]