posted on Feb, 9 2013 @ 04:13 PM
Originally posted by Olivine
Just out of curiosity, how are the spectrographs more helpful than the waveforms, at these monitoring distances? Are you just more familar with the
data in that form?
In several ways:
1) You can see frequency content.
2) This is critical in helping to decide if something is a seismic event, and particularly with low magnitude events that don't propagate far- like to
3) In this case where we are 500 km away from the situation, all the more handy, and indispensable, to me.
4) You can see things that can get otherwise completely hidden when you are looking at waveform view, cause the power of the event may be too close in
amplitude to the background noise floor. This is especially true where there has just been an event, and then there is another smaller one. With
dynamic scales, like in GEE, you'd never see the second one until the first one's off the screen. If they are too close, you probably won't see it at
5) Also, you can see the separate P & S waves clearly, and more distinctly in spectro mode..
6) And also, forgot, spectro is extremely useful for spotting teleseisms from distant quakes- those get hidden all the time in waveform view.
There is a ton of low level seismicity happening in Santa Cruz, showing at SANVU, and has been since this started.
And btw, just had another 6.5.
edit on Sat Feb 9th 2013 by TrueAmerican because: (no reason given)
edit on Sat Feb 9th 2013 by
TrueAmerican because: (no reason given)