Planet Earth has slowed its rotation and lengthened the day. Scientists have a hard time understanding why.
In general, there are processes that point out that her day on Earth has lengthened from a length of about 86,400 seconds.
Over millions of years, friction caused by themoonslowed the planet's rotation. Every 100 years adds approximately 2.3 milliseconds to the length of the day. Billions of years ago, her day on Earth lasted only her 19 hours.
However, the Earth's continued slowdown is currently unprecedented and has continued for the past 50 years, with overall the Earth's
According to a study published in 2016 in the Time Slowing Proceedings of the Royal Society A,
"rotation rates were found to deviate from uniformity. The solar day (lod) increases at an average rate of +1.8 ms per century, which is significantly less than the predicted rate of +2.3 ms per century based on tidal friction,” the researchers wrote. I'm here.
Earth had its shortest day on her June 29, 2022, but the general trend is that the days are getting longer, with no immediate explanation.
There are several theories: Melting ice sheets by the weather system may have long-term effects. At low altitudes the planet is contracting inwards. Since it is decreasing at a constant rate, it may not fit such abrupt changes.
Fluctuations in the planet's rotation rate, known as the 'Chandler wobble' - small, erratic movements of the Earth's geographic poles across the Earth's surface - may have an impact.
Finally, processes in the inner or outer layers of the Earth, oceans, tides and even climate may be responsible. Large earthquakes can also change the length of the day, but the amount is usually very small.
