Micro Hertz Frequency Necessary for Earthquake Predictions.
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From: Bret Cahill on 22 May 2010 00:59 Why stop at milli Hertz? Bret Cahill
From: John Larkin on 22 May 2010 01:51 On Fri, 21 May 2010 21:59:52 -0700 (PDT), Bret Cahill <BretCahill(a)peoplepc.com> wrote: >Why stop at milli Hertz? > > >Bret Cahill Use femtoHertz. That way, you can predict earthquakes to resolution of a few centuries. John
From: whit3rd on 22 May 2010 02:51
On May 21, 9:59 pm, Bret Cahill <BretCah...(a)peoplepc.com> wrote: > Why stop at milli Hertz? The Mt. St. Helens eruption of May 1980 was predicted accurately first on the timescale of centuries, and on the timescale of weeks. No one knew which hour or day, until it happened. The geological record was what gave assurance it'd pop 'about now' meaning this-half-a-century. The preliminary seismic rumblings were why there were weeks of advance warning (and why preparations and evacuation were achieved). The only 'stopping' was at a few deciHz in the low frequency band, because the mechanical seismometer movements are tuned for that (it has better signal/noise than lower frequencies, and better range than higher frequencies). |