JAPAN -- The massive earthquake that struck northeast Japan last March 11 has shortened the length Earth's day by a fraction and shifted how the planet's mass is distributed.
A new analysis of the 8.9-9.0 magnitude earthquake in Japan has found that the intense temblor has accelerated Earth's spin, shortening the length of the 24-hour day by 1.8 microseconds, according to geophysicist Richard Gross at NASA's Jet Propulsion Laboratory in Pasadena, Calif.
The scenario is similar to that of a figure skater drawing her arms inward during a spin to turn faster on the ice. The closer the mass shift during an earthquake is to the equator, the more it will speed up the spinning Earth.
The earthquake also shifted Earth's figure axis by about 6 1/2 inches (17 centimeters), Gross added.
This isn't the first time a massive earthquake has changed the length of Earth's day. Major temblors have shortened day length in the past.
The 8.8-magnitude earthquake in Chile last year also sped up the planet's rotation and shortened the day by 1.26 microseconds. The 9.1 Sumatra earthquake in 2004 shortened the day by 6.8 microseconds.
And the impact from Japan's 8.9-magnitude temblor may not be com¬pletely over. The weaker aftershocks may contribute tiny changes to day length as well.
anw, we can do nothing but just pray for their safety.
not just the japanese, but people from all over the world.
help out in your small little ways
may it be just saying good morning with a smile on your face to your neighbours
start with your small circle-family
to those around you- your neighbours, your friends
give out positive energy! it will help!
at least, you are doing something to change the worldXD
so,
GOOD MORNING (well, its afternoon)
HAPPY TUESDAY! remember, everyday is something worth celebrating for.
the fact that you are alive, having the time to read this,
you are A LUCKY ONE!
to fellow singaporeans,
happy march holidays!
enjoy your life.
you are lucky to be HERE.
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