I have heard on the news that the earthquake was so powerful that it changed the earth's rotation and axis by a small degree. I heard a similar story about the Indonesian earthquake.
Does anyone know:
1. what is the cumulative effect of both earthquakes on the length of the day and the earth's axis tilt
2. will the change have any effect on climate? I am thinking that even a small shift in the axis would have a noticeable effect on the polar regions.
some reports said our day was shortened by a fraction of a second. Axis moved by around 25 cm & parts Japan's coast moved closer to US by 2.4 m (8 ft)
I would really like to know how they determine these things.
I heard the day was shortened by 4 minutes (one day or every day? they didn't say)
The Axis - I don't remember exactly, but I think it was 4 cm or inches.
And, I heard Japan moved West by 13 feet. (not just the coast, the entire country!)
It happens because the earth's crust has been forced up by a few feet over a vast area as the Pacific plate has slipped under the Japanese one. My understanding is that it throws out the speed of the earth's spin from the norm because it shifts the distribtion of the Earth's mass. i.e. the mass is further from the centre of the globe.
I'm aware I haven't done a very good job of explaining that, for a former earth-sciences student!
Oh, and incidentally, they measure it using super accurate atomic clocks. It wont be enough for us to notice it!
It just increased the earth's rotation speed by 1 microsecond or 1/1000000 of a second. The the length of the day was decreased by 1/1000000 of a second. I do not think anyone will notice that. This effect will not change anything. The axis was shifted by about a degree and then resets itself because the moon is responsible for keeping the earth's axis at the 23 degrees tilt. The moon also stabilizes the earth's axis so it pretty much keeps it in its current orientation. These effects are extremely small to cause any significant change in our weather system
As usual, the BBC has managed to answer this in a more succinct way than me!
by John B Badd8 months ago
I am not asking about the effect of burning oil or spilling it in the ocean. I am looking to find out how removing oil from the ground effects the ecosystem. Imagine we drained it and did not use it or spill...
by Jenn12 months ago
Has anyone had any paranormal experiences, whether they've seen or heard a spirit- or any other unexplained activity?I haven't had any as of yet. However, my mom says that she saw her father in church after he died, and...
by ngureco7 years ago
Climate - Why Do We Have Different Seasons?
by ptosis23 months ago
Climate change: Is that why the Earth's axis is shifting?Or is it the other way around? https://youtu.be/qab-zntCQ7Q The slow precession of the earth's wobble is called the Great, Cosmic or Platonic year and...
by AnnCee7 years ago
by Sweetsusieg7 years ago
Has anyone ever heard of Gather? It's another social networking site?There are so many social networking sites and some pay actual money for using them, just wondering if anyone has heard of it and how it's...
Copyright © 2018 HubPages Inc. and respective owners.
Other product and company names shown may be trademarks of their respective owners.
HubPages® is a registered Service Mark of HubPages, Inc.
HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.