Re: Tornillo earthquake?


"Zardoz" wrote:
> "Bruce Inkster" wrote:
>> What would a tornillo earthquake look like on the AVO Webicorders?
>> Anything like this? (01-23-06)
>> http://www.avo.alaska.edu/webicorders/webicorder.php?volcname=Martin
>>
>>
>
> http://kiska.giseis.alaska.edu/input/sanchez/volcseis.html
>
> Zardoz

How can you tell the frequency from the graphs ?
Is it more like this?
'Volcanic tremor is a quasi-continuous to continuous signal of duration from
minutes to days or longer. The dominant frequencies of tremor are 1-5 Hz,
similar to low-frequency events. Harmonic tremor and spasmodic tremor are
two special cases of more general volcanic tremor, The former is
low-frequency, often monotonic sinusoid with smoothly varying amplitude, and
the latter is a higher-frequency, pulsating irregular signal [Finch, 1949].
'

Thanks Bruce I


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