Hello everyone=2C

=20

I thought you might like this link:

=20

http://www.cenews.com/news-new_inertial_mems_accelerometers_expected_to_ben=
efit_infrastructure_and_seismic_monitoring-717.html

=20

Kind regards=2C

=20

Felipe Luevanos

Fontana=2C CA
=20
> Date: Wed=2C 11 Nov 2009 14:03:21 -0500
> To: psn-l@..............
> From: brett3nt@.............
> Subject: Re: WinQuake Times
>=20
> Geoff=2C
>=20
> Your torsion seismo is just the sort of thing that is getting quite a bit=
=20
> of interest in the seimo community right now--lots of papers=2C etc. on=20
> rotational seismology. I don't much understand most of them=2C but at the=
=20
> moment there seem to be a number of folks studying it. Only problem I can=
=20
> think of is that the rotational motions may be much smaller than the usua=
l=20
> Up-Down=2C N-S & E-W linear motions except maybe for local quakes=2C but =
it=20
> sounds like it might be an interesting thing to look at.
>=20
> Best regards=2C
> Brett
>=20
> At 09:22 AM 11/10/2009 -0700=2C you wrote:
> >Your Setup is the very kind I like to see.
> >
> >I once made a torsion seismometer using
> >a spring made out of an aluminum antenna
> >rod split down the middle and fastened
> >at both ends in clamps like the scientists use.
> >Then it had a long lever arm of wood with a
> >magnet on the end. It was a hopeful dream
> >that never realized itself due to annoying
> >torments in my life. The period must have
> >been longer than a second. I have faith (chuckle)
> >in torsional kind of seismic devices.
> >If you made two and put them back to back
> >you may possibly cancel out tilt and only
> >look at vertical motions. But not exactly sure.
> >Thanks for the input Mr. Sparks=2C
>=20
> 
>=20
> Best Regards=2C
> geoff
>=20
> Watch our wiggles
> http://bnordgren.org/seismo/gif_images.htm
>=20
> or watch some very very good wiggles
> http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_data/ANMO_24hr.html
>=20
>=20
> __________________________________________________________
>=20
> Public Seismic Network Mailing List (PSN-L)
>=20
> To leave this list email PSN-L-REQUEST@.............. with=20
> the body of the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
 		 	   		 =20
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010=





Hello everyone=2C

 =3B

I thought you might like this link:

 =3B

http://www.=
cenews.com/news-new_inertial_mems_accelerometers_expected_to_benefit_infras=
tructure_and_seismic_monitoring-717.html

 =3B

Kind regards=2C

 =3B

Felipe Luevanos

Fontana=2C CA
 =3B
>=3B Date: Wed=2C 11 Nov 2009 14:03:21 -0500=

>=3B To: psn-l@..............
>=3B From: brett3nt@.............<=
BR>>=3B Subject: Re: WinQuake Times
>=3B 
>=3B Geoff=2C
>=
=3B 
>=3B Your torsion seismo is just the sort of thing that is gettin=
g quite a bit 
>=3B of interest in the seimo community right now--lots=
 of papers=2C etc. on 
>=3B rotational seismology. I don't much unders=
tand most of them=2C but at the 
>=3B moment there seem to be a number=
 of folks studying it. Only problem I can 
>=3B think of is that the r=
otational motions may be much smaller than the usual 
>=3B Up-Down=2C =
N-S &=3B E-W linear motions except maybe for local quakes=2C but it 
=
>=3B sounds like it might be an interesting thing to look at.
>=3B <=
BR>>=3B Best regards=2C
>=3B Brett
>=3B 
>=3B At 09:22 AM =
11/10/2009 -0700=2C you wrote:
>=3B >=3BYour Setup is the very kind =
I like to see.
>=3B >=3B
>=3B >=3BI once made a torsion seism=
ometer using
>=3B >=3Ba spring made out of an aluminum antenna
&g=
t=3B >=3Brod split down the middle and fastened
>=3B >=3Bat both e=
nds in clamps like the scientists use.
>=3B >=3BThen it had a long l=
ever arm of wood with a
>=3B >=3Bmagnet on the end. It was a hopeful=
 dream
>=3B >=3Bthat never realized itself due to annoying
>=3B=
 >=3Btorments in my life. The period must have
>=3B >=3Bbeen longe=
r than a second. I have faith (chuckle)
>=3B >=3Bin torsional kind o=
f seismic devices.
>=3B >=3BIf you made two and put them back to bac=
k
>=3B >=3Byou may possibly cancel out tilt and only
>=3B >=
=3Blook at vertical motions. But not exactly sure.
>=3B >=3BThanks f=
or the input Mr. Sparks=2C
>=3B 
>=3B <=3Bclip>=3B
>=3B =

>=3B Best Regards=2C
>=3B geoff
>=3B 
>=3B Watch our w=
iggles
>=3B http://bnordgren.org/seismo/gif_images.htm
>=3B 
&=
gt=3B or watch some very very good wiggles
>=3B http://aslwww.cr.usgs.=
gov/Seismic_Data/telemetry_data/ANMO_24hr.html
>=3B 
>=3B 
>=
=3B __________________________________________________________
>=3B >=3B Public Seismic Network Mailing List (PSN-L)
>=3B 
>=3B T=
o leave this list email PSN-L-REQUEST@.............. with 
>=3B the bo=
dy of the message (first line only): unsubscribe
>=3B See http://www.s=
eismicnet.com/maillist.html for more information.
 		 	   		  
Windows Live: Keep your friends up to date with what you do online.
=