Hi, thanks for the reply. I have a filter arriving this weekend, so, all being well, I should be able to start seeing very low level tilts instead of just noise. I was hoping that someone could put a figure on the magnitude of tilt generated by a quake on the other side of the world. Perhaps I will have the answer in a few days from my system! Can you remember roughly when the email discussion took place about tilt meters? I can search the appropriate file of the psn archives. Thanks Ian Smith George Harris wrote: > Ian, > > A couple of years ago, I raised the question concerning tilt. At that time > I had a vertical pendulum which had a natural frequency of about 1 second. > I was most surpised when one of the earthquakes in the Aleutians showed up > very clearly with a 15 second period in California. I > believe that it was recording tilt. I would recommend you trying to > duplicate. > > George Harris > > ----- Original Message ----- > From: ian> To: > Sent: Sunday, February 04, 2001 11:26 AM > Subject: tiltmeters > > > I'm wondering if I have any chance of detecting tele-seismic events with a > tilt > > meter. I think I can resolve a tilt of 5 micro-radians and I can bandpass > the > > signal through a 20 second to 10 second period filter. > > > > TIA > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>