The day length just got shortened by Chile Earthquake

Posted: March 2, 2010 in Amazing, Anatomy, Global, Life, Life Cycle
Tags: , , , , , , , , , , , , , , ,

Remember the movie “CORE”, wherein a team that has to drill to the center of the Earth and set off a series of nuclear explosions in order to restart the rotation of Earth’s core.

Nah, nothing of that sort is happening in real world. It still remains a work of fiction. But a week ago, the massive earthquake that struck Chile have shifted the Earth’s Axis which reminded me of this movie.

Result: The length of days has been shortened. Though the change is negligible, it is permanent. According to the preliminary calculations, each day should be 1.26 microseconds shorter.

Amazing, isn’t it?

According to the scientists at NASA, a large quake shifts massive amounts of rock and alters the distribution of mass on the planet. When that distribution changes, it changes the rate at which the planet rotates. And the rotation rate determines the length of a day.

Richard Gross, a geophysicist at NASA’s Jet Propulsion Laboratory in Pasadena, California, used a computer model to determine how the 8.8-magnitude quake that struck Chile on February 27 might have affected the Earth.

He determined that the quake should have moved the Earth’s figure axis about 3 inches (8 centimeters). The figure axis is one around which the Earth’s mass is balanced. That shift in axis is what might have shortened days.

Such changes aren’t unheard of. The 9.1-magnitude earthquake in 2004 that generated a killer tsunami in the Indian Ocean shortened the length of days by a whooping* 6.8 microseconds (*in comparison).

My Point – Hmmm I’ll say these frequent natural calamities are a warning that the mother earth is adjusting herself big time in accordance with the nuisance we are creating. And I certainly don’t feel this adjustment gonna be any good for us. Also this points that all those save earth missions, summits and slogans are still premature and not been followed seriously.

“Jaago Duniya walo Jaago”. “WAKE UP” or if you find comfort in sleeping, so be it. One night we’ll sleep and never wake up. That night will have no dawn.

P.S. – On the other hand, the length of a day also can increase. For example, if the Three Gorges reservoir in China were filled, it would hold 10 trillion gallons (40 cubic kilometers) of water. The shift of mass would lengthen days by 0.06 microseconds, scientists said.

Data Source: CNN

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