Councilman
DP Veteran
- Joined
- Apr 25, 2009
- Messages
- 4,454
- Reaction score
- 1,657
- Location
- Riverside, County, CA.
- Gender
- Male
- Political Leaning
- Conservative
Two things come to mind with this information.
1. It is fascinating that measurements can be made of such minute changes in the tilt of the earth.
2. An earth quake lasting about 90 seconds can affect the whole world.
It was said by a so-called expert that a similar size quake may soon be in the offing for the San Andreas here in Southern California.
If you look at how far the epicenter is from the capital Santiago, nearly 200 miles away and the damage, then look at how close down town L.A. is to parts of the San Andreas less than 50 miles, the chance of devastation here is very real.
I doubt even buildings that were built to the high standards we have in California could stand up to what they are now saying was ans 8.8 quake.
I pray we never get to find out. Mostly because fault line is only 6 miles from here and 90 seconds of that kind of shaking will cause my heart to finally give up.
1. It is fascinating that measurements can be made of such minute changes in the tilt of the earth.
2. An earth quake lasting about 90 seconds can affect the whole world.
It was said by a so-called expert that a similar size quake may soon be in the offing for the San Andreas here in Southern California.
If you look at how far the epicenter is from the capital Santiago, nearly 200 miles away and the damage, then look at how close down town L.A. is to parts of the San Andreas less than 50 miles, the chance of devastation here is very real.
I doubt even buildings that were built to the high standards we have in California could stand up to what they are now saying was ans 8.8 quake.
I pray we never get to find out. Mostly because fault line is only 6 miles from here and 90 seconds of that kind of shaking will cause my heart to finally give up.
Chilean Quake Likely Shifted Earth?s Axis, NASA Scientist Says - Bloomberg.com
By Alex Morales
March 1 (Bloomberg) -- The earthquake that killed more than 700 people in Chile on Feb. 27 probably shifted the Earth’s axis and shortened the day, a National Aeronautics and Space Administration scientist said.
Earthquakes can involve shifting hundreds of kilometers of rock by several meters, changing the distribution of mass on the planet. This affects the Earth’s rotation, said Richard Gross, a geophysicist at NASA’s Jet Propulsion Laboratory in Pasadena, California, who uses a computer model to calculate the effects.
“The length of the day should have gotten shorter by 1.26 microseconds (millionths of a second),” Gross, said today in an e-mailed reply to questions. “The axis about which the Earth’s mass is balanced should have moved by 2.7 milliarcseconds (about 8 centimeters or 3 inches).”
The changes can be modeled, though they’re difficult to physically detect given their small size, Gross said. Some changes may be more obvious, and islands may have shifted, according to Andreas Rietbrock, a professor of Earth Sciences at the U.K.’s Liverpool University who has studied the area impacted, though not since the latest temblor.