Hi All,  I just did a side by side comparison of an Earthquake recorded =
by a Vertical with a 2? second period and a Horz Pendulum with a 10? =
second period.  The different on this 6.7M at 10000km was very =
pronounced, showing all the advantages of the Horz.

However, using the Vertical, I record many more Earthquake, and smaller =
ones.  If the event is large, both sensors are impressive (to me).

In planning my next sensor, I need to pick a target period.   I already =
see the advantage of each.  What period might be the best target?   Or =
is it just better to pick one end of the spectrum and not the center?








Hi All,  I just did a side by side =
comparison=20
of an Earthquake recorded by a Vertical with a 2? second period and a =
Horz=20
Pendulum with a 10? second period.  The different on this 6.7M at =
10000km=20
was very pronounced, showing all the advantages of the =
Horz.
 
However, using the Vertical, I record =
many more=20
Earthquake, and smaller ones.  If the event is large, both sensors =
are=20
impressive (to me).
 
In planning my next sensor, I need to =
pick a target=20
period.   I already see the advantage of each.  What =
period might=20
be the best target?   Or is it just better to pick one =
end of the=20
spectrum and not the center?
 
Thanks, Ted