Jan –
About your seismic background noise – I have no background in electronics so
I cannot comment on that. However if you will check out the
Lamont-Daugherty Cooperative Seismic Network (just north of New York city)
at the following site:
http://www.ldeo.columbia.edu/cgi-bin/LCSN/WebSeis/24hr_heli.pl
You will see the background noise has been quite high for over 24 hours……..
If you will then go the following three sites in Tucson, Arizona, you will
see similar broadband noise.
http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_sp.html
http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_lp.html
http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_nf.html
Some of the displays look very close to your type of activity. I have a
broadband sensor and have filtered most of it out as I view the screen, but
it still comes through. I am not certain what the cause is, but we appear
to be in a period of increased seismic background noise. This appears to
have significantly increased around 0900 – 1000 UTC September 29, here in
the northeast, and now appears to be relaxing a little. I am aware of a
storm near Jamaica, but there are probably others around that are also
influencing what we are seeing.
Good Luck with your venture.
Bob Hancock
-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@.................
Behalf Of Jan D. Marshall
Sent: Sunday, September 29, 2002 12:18 PM
To: Sesmic List Server
Subject: New Lehman on line (almost)
Jan =
–
About your seismic
background noise – I have no background in electronics so I cannot =
comment on
that. However if you will =
check
out the Lamont-Daugherty Cooperative Seismic Network (just north of New =
York
city) at the following site:
=
; h=
ttp://www.ldeo.columbia.edu/cgi-bin/LCSN/WebSeis/24hr_heli.pl
You =
will see
the background noise has been quite high for over 24 =
hours……..
If =
you will
then go the following three sites in Tucson, Arizona, you will see =
similar broadband
noise.
=
; http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_sp.html
=
; http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_lp.html
=
; http://saso.geo.arizona.edu/saso/Earthquakes/Current/tuc_nf.html
Some of the
displays look very close to your type of activity. I have a broadband sensor and have filtered most of =
it out
as I view the screen, but it still comes through. I am not certain what the cause is, but we appear to =
be in a
period of increased seismic background noise. This appears to have significantly increased around =
0900 –
1000 UTC September 29, here in the northeast, and now appears to be =
relaxing a
little. I am aware of a =
storm near
Jamaica, but there are probably others around that are also influencing =
what we
are seeing.
Good Luck with
your venture.
Bob =
Hancock
=
-----Original Message-----
From: =
psn-l-request@..............
[mailto:psn-l-request@...............On
Behalf Of Jan D. Marshall
Sent: Sunday, September =
29, 2002
12:18 PM
To: Sesmic List =
Server
Subject: New Lehman on =
line
(almost)