TREMBLING EARTH, WOBBLY STARS
Posted by JAC on 3/3/2010, 6:06 pm
| In Chile, astronomers know the ground is still shaking. They can see it in the stars. Colin Legg reports from the Andes east of Santiago: "I made this 88-second exposure on Sunday night, Feb. 28th, less than 24 hours after the big 8.8-magnitude quake. It records the movement of the Earth in the star trails during an earth tremor."  Earthquake experts say the shaking will continue for months. Indeed, in the days after the "Big One", Chilean seismometers have recorded more than 10 aftershocks in the range 6th to 7th magnitude, and more than 200 aftershocks stronger than 4th magnitude. |
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In this thread:
earth loses fraction of a second. - hillsboroughweather, 3/3/2010, 2:13 pm
- NASA Model - JAC, 3/3/2010, 7:17 pm
- Re: NASA Model - hillsboroughweather, 3/3/2010, 9:10 pm
- MIT Haystack Observatory - JAC, 3/3/2010, 6:30 pm
- Superfluid gyro detects Earth's spin. - JAC, 3/3/2010, 6:23 pm
- Principles of a phase slip gyroscope - JAC, 3/3/2010, 6:26 pm
- New Quantum Gyro May Help Measure Earth's Rotation - JAC, 3/3/2010, 6:25 pm
- Understanding rotational period and time standards - JAC, 3/3/2010, 6:20 pm
- Re: earth loses fraction of a second. - hanna, 3/3/2010, 6:10 pm
- Earthquakes and the earth's rotation - JAC, 3/3/2010, 6:10 pm
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