FYI, the following Navy weather site gives a little=

more info on ocean waves, including period, for those who may want to
try and see a correlation with seismo waveform???



It is a little more involved than the link I sent the other day,
getting to the info, but if you play with it for a while you will
figure it out.=A0 For example, once you click on an icon, it will take
you to a short list of choices; =A0 Here, if you click on a single "time"=

button, rather than an "all" button, you will get a list to the left
side of the chart for a lot more info for different types of waves and
periods; along with other weather choices.

https://www.fnmoc.navy.mil/ww3_cgi/index.html



Here is a link to a story where they intend to use seismograms to try
and find unrecorded historical hurricanes.

http://www.geosociety.org/news/pr/09-60.htm 

=A0 Enjoy,=A0 Stephen

=A0 PSN Station #55

=A0 38.828N=A0 120.979W

=A0 near Pilot Hill Ca. USA