Earth's Center of Mass Drifts Less Than We Thought
Researchers found seasonal snow, rain and air pressure shift Earth’s balance point by several millimetres, and four methods now agree within 2.5 millimetres.
5 Articles
5 Articles
Earth’s centre of mass wanders several millimetres relative to the solid planet over the course of each year, as monsoon rains, snowpack, ocean water and shifting air masses redistribute weight around the globe.
A new geodetic analysis combines satellite ranging, GPS and orbital data to trace the millimetre-scale annual offset between Earth's mass centre and its solid surface.
A recent study reveals that the Earth's mass center moves in a smaller magnitude than previous estimates. The research, published in Geophysical Journal International, uses satellite data and GPS technology to improve the accuracy of measurements. Definition of the Earth's mass center The Earth's mass center is the point where the planet's mass is balanced. This concept is fundamental to understand the dynamics of the planet, because any displac…
Scientists have revealed that the center of the Earth's mass is constantly moving with the sequence of seasons, as a result of changes in the distribution of water, ice and air around the planet, in a movement that could affect the accuracy of navigation systems. A team of NASA scientists has shown that large amounts of water, ice and air travel between different regions of the Earth throughout the year, due to phenomena...
Melts, precipitation, and atmospheric changes cause massive masses of water and air to shift, shifting the Earth's center of mass by a few millimeters. While this movement is imperceptible to humans, it proves crucial for satellite navigation. NASA scientists have developed a method that allows for more precise measurement of these seasonal fluctuations.
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