I just love this graph. If you installed the most super-sensitive super-broadband seismometer on the cold hard crust, you still come up with this problem of low-level noise. This is the equivalent of sticking your head on the earth and hearing the ocean! Because that's exactly what you hear! You can see all the various sources of this 'earth murmur' on the figure.
Sunday, August 9, 2009
Seismic Noise
I just love this graph. If you installed the most super-sensitive super-broadband seismometer on the cold hard crust, you still come up with this problem of low-level noise. This is the equivalent of sticking your head on the earth and hearing the ocean! Because that's exactly what you hear! You can see all the various sources of this 'earth murmur' on the figure.
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