PSN-L Email List Message

Subject: Re[2]: Long period seismonitor sensitivity ?
From: Angel sismos@..............
Date: Sun, 19 Mar 2006 13:47:03 +0000

Hello Jón,

I have been following your progress in Iceland with interest, thanks
for all of the information.

I see that you mention that you want to build some long period devices
and I would to invite you (and anyone else) to the FMES list.  We have
not been too active but the FMES (Fluid Mass Electolytic Seismograph)
is very easy to build and is good from about 5 hz to 50 seconds.  It
has no moving parts except the fluid, which is water, anti-freeze and
a foam reducer.

You can join the list at

You can see some of the traces of different FMESes at

two of those are mine and the other belongs to Marchal

Dave, Chris, Marchal and myself have working systems and I plan to
build more, we would welcome other to make some of these device so
that we can learn more faster and have more ideas come to all of use.
As the Perl perople say, "There is more than one way to do it"



Saturday, March 18, 2006, 3:22:54 PM, you wrote:

> Hi Chris

> Thanks for that info. I plan in the future to build two long period
> seismonitors, one that is 1Hz and other that is 0.1Hz (SG seismonitor,
> if possible) to monitor teleseimic earthquakes. With my current hardware
> i can detect most regonal earthquakes that are 4.5Mb or larger along
> with local earthquakes that i detect alot of.


Public Seismic Network Mailing List (PSN-L)

[ Top ] [ Back ] [ Home Page ]