PSN-L Email List Message
Subject: Re: 8 second Microseisms
From: ian ian@...........
Date: Thu, 30 May 2002 12:51:17 -1000
no hurricane here in Hawaii, a bright sunny day in fact.
What it may be is the volcano causing what you see on the Kipapa station.
I know there has been a bit of extra activity lately, described as long
period small quakes. Another station here which is also showing activity
is the Poha station, http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_data/POHA_24hr.html
.. The volcano's daily status can be checked at http://hvo.wr.usgs.gov/kilauea/update/main.html
One key phrase from today's bulletin is "Kilauea is really jumping".
My own geophone seismometer isn't showing anything untoward - http://www.iasmith.com/realtime.htm
- but my experimantal tiltmeter is picking up similar traces to those seen
at Kipapa and Pahoa stations.
Could be interesting...
Mark Robinson wrote:
FYI,, I noticed a strangeness in the background noise today as I was
traces, so I did an FFT and discovered that they had a period of about 8
seconds,, as compared to the n
ormal 4.5 to 5.5 that I've noticed over
for Northern California! Anyone have any idea why???? Could this be
by the hurricane,, or is something else going on??? I verified that it
my machine by checking with the Berkeley "make your own seismogram" link!!
I haven't noticed such long period microseisms before,,, perhaps I just
PSN Station #55
near Pilot Hill Ca
Hurricane huh, must be hitting Hawaii pretty hard, have a quick look at LISS
it expires or at a cached version at
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