Blair, wow, thank you for this fabulous information! len=0A=A0=0A=0A=0A=0A=
=0A=0A________________________________=0AFrom: Blair lade =0ATo: psnlist@...................... Tue, July 12, 2011 3:44:48 PM=
=0ASubject: RE: Ambient ground noise and solar flares?=0A=0A=0AI'm not sure=
 about literature as I havn't looked but there have been some=0Alarge CME (=
coronial mass ejection) events from the sun that have hit earth=0Ain the la=
st couple of months.=0AThese will move a compass (slightly) and since seism=
ometers are very=0Asensitive to changes in magnetic fields, it is quite lik=
ely that you could=0Asee these events with a long period seismometer.=0A=0A=
Our radio Astronomy group in South Australia runs a magnetometer which I=0A=
have built http://www.radio-assa.org.au/magnetometer , sees these events,=
=0Atypical changes are +-100nT , sometimes up to +-500nT which would cause =
much=0Atrouble, the diurnal variation each day is usually much lower around=
 +-20nT.=0AEarth's magnetic field is typ 50,000nT.=0A=0AOur Australian Spac=
e Weather Agency see=0Ahttp://www.ips.gov.au/Geophysical/1/1 has magnetogra=
ms, I'm sure you will be=0Aable to find nearer stations to you.=0ATry googl=
ing space weather or magnetograms..=0A=0AThere are professionals and amateu=
rs that monitor these events and the=0Aaddition of a sensitive magnetometer=
 to a seismic station would be quite=0Aworthwhile.=0A=0AThere is enough ene=
rgy in these events to cause fluctuations in pipe lines,=0Abring power grid=
s and communication networks down worldwide, damage=0Asatellites and are re=
sponsible for Auroral displays..=0A=0ASeveral years ago I believe this was =
responsible for the wide power outages=0Aexperienced in America.=0A=0ABlair=
 Lade=0A=0A-----Original Message-----=0AFrom: psnlist-request@..............
m [mailto:psnlist-request@.................... Behalf Of Thomas Dick=0ASent=
: Wednesday, 13 July 2011 3:34 AM=0ATo: psnlist@......................... A=
mbient ground noise and solar flares?=0A=0AI have not been satisfied with m=
y seismic units; an AS-1 and two =0Ahomemade Laymans,=A0 running Larry's so=
ftware and electronics. The last =0Atwo months the FFT shows strong peaks a=
t ~.2 hz and .04hz. These peaks =0Aare unusually strong this year ...vertic=
al scale log over 50 and =0Areaching 120. This is based on taking FFT's at =
about 3 AM local time =0Aprovided there is no regional or teleseimic earthq=
uake data coming in. =0AIs there any literature on this ambient noise being=
 associated with =0Asunspot activity? I noticed a flare was recorded yester=
day and about the =0Asame time last month. It even affected my cell phone r=
ange. The oceans =0Aand surface storms that I normally attribute to these p=
eaks have been =0Arelatively mild the last week here in middle U.S. Any com=
ments?=0A__________________________________________________________=0A=0APu=
blic Seismic Network Mailing List (PSNLIST)=0A=0ATo leave this list email P=
SNLIST-REQUEST@.............. with =0Athe body of the message (first line o=
nly): unsubscribe=0ASee http://www.seismicnet.com/maillist.html for more in=
formation.=0A=0A__________________________________________________________=
=0A=0APublic Seismic Network Mailing List (PSNLIST)=0A=0ATo leave this list=
 email PSNLIST-REQUEST@.............. with =0Athe body of the message (firs=
t line only): unsubscribe=0ASee http://www.seismicnet.com/maillist.html for=
=0A
Blair, wow, thank you for this fabulous informati=
on! len
 

=0A

=0A

=0A
=0A
=0AFrom: Blair lade <blairl@...............>
To: psnlist@..............
Sent: Tue, July 12, 2011 3:44:48 PM
Subject: RE: Ambient ground noise =
and solar flares?


I'm not sure about literature as I havn=
't looked but there have been some
large CME (coronial mass ejection) ev=
ents from the sun that have hit earth
in the last couple of months.
T=
hese will move a compass (slightly) and since seismometers are very
sens=
itive to changes in magnetic fields, it is quite likely that you could
s=
ee these events with a long period seismometer.

Our radio Astronomy =
group in South Australia runs a magnetometer which I
have built http://w=
ww.radio-assa.org.au/magnetometer , sees these events,
typical changes a=
re +-100nT , sometimes up to
 +-500nT which would cause much
trouble, the diurnal variation each day =
is usually much lower around +-20nT.
Earth's magnetic field is typ 50,00=
0nT.

Our Australian Space Weather Agency see
http://www.ips.gov.a=
u/Geophysical/1/1 has magnetograms, I'm sure you will be
able to find ne=
arer stations to you.
Try googling space weather or magnetograms..
There are professionals and amateurs that monitor these events and theaddition of a sensitive magnetometer to a seismic station would be quiteworthwhile.

There is enough energy in these events to cause fluctu=
ations in pipe lines,
bring power grids and communication networks down =
worldwide, damage
satellites and are responsible for Auroral displays..<=
BR>
Several years ago I believe this was responsible for the wide power =
outages
experienced in America.

Blair Lade

-----Original M=
essage-----
From: psnlist-request@webtroni=
cs.com [mailto:psnlist-request@..............<=
/A>]
On Behalf Of Thomas Dick
Sent: Wednesday, 13 July 2011 3:34 AMTo: psnlist@..............
Subject: Ambient ground noise =
and solar flares?

I have not been satisfied with my seismic units; a=
n AS-1 and two 
homemade Laymans,  running Larry's software and ele=
ctronics. The last 
two months the FFT shows strong peaks at ~.2 hz and =
..04hz. These peaks 
are unusually strong this year ...vertical scale log=
 over 50 and 
reaching 120. This is based on taking FFT's at about 3 AM =
local time 
provided there is no regional or teleseimic earthquake data =
coming in. 
Is there any literature on this ambient noise being associat=
ed
 with 
sunspot activity? I noticed a flare was recorded yesterday and ab=
out the 
same time last month. It even affected my cell phone range. The=
 oceans 
and surface storms that I normally attribute to these peaks hav=
e been 
relatively mild the last week here in middle U.S. Any comments?<=
BR>__________________________________________________________

Public=
 Seismic Network Mailing List (PSNLIST)

To leave this list email PSNLIST-REQUEST@.............. with 
the body =
of the message (first line only): unsubscribe
See http://www.seismicnet.=
com/maillist.html for more information.

____________________________=
______________________________

Public Seismic Network Mailing List (=
PSNLIST)

To leave this list email PSNLIST-REQUEST@SEISMICN=
ET.COM with 
the body of the message (first line only): unsubscribe<=
BR>See =
http://www.seismicnet.com/maillist.html for more information.
=