Hi George -

This is an ongoing project that is affecting all the networks that are =
tied into the IRIS system.  When the digitizer is upgraded, they also =
rename the two horizontal channels as follows:  The broadband North =
channel such as BHN are being renamed BH1, and the broadband East =
channel such as BHE are being renamed BH2.  The long period horizontal =
channels are also being renamed from LHN to LH1 and LHE to LH2.  Right =
now when you download data through IRIS, you can find channels named =
both ways.  The vertical channel remains unnamed at BHZ or LHZ

I don't know about the old SCSN digitizers, but the old digitizers for =
the IU system are being collected in Albuquerque.  They are a large box =
which is every bit of about 2 feet to a side and are heavy.  Although =
they are 24 bit digitizers, their output is in SEED and SAC format, and =
from what I have heard, they are not designed to display live data like =
you can with Larry's boards.  There are a few sites that do this such as =
the Columbia University, Lamont-Doherty Cooperative Seismic Network =
(LSCN) in New York, and the University of Arizona, Tucson, AZ, but that =
is not the norm.

Bob Hancock
Three Points, AZ


On Mar 11, 2010, at 11:26 AM, George Bush wrote:

> A friend of mine sent me a copy of the Engineering & Science Magazine =
published by Cal Tech that had an article about upgrading the Southern =
California Seismic Network. This might be of interest to us for three =
reasons-
>=20
> I. Someone in PSA might be involved with this upgrade and could tell =
us a little about it, it sounds interesting.
> 2. What will happen to the equipment that is replaced, maybe PSN could =
help in distributing any surplus equipment to amateur seismologists like =
us.
> 3. I assume we all will benefit from the data from the enhanced =
network.
>=20
> You can read more about it and who is doing it at-
> =
http://eands.caltech.edu/articles/LXXIII1/2010_Winter_SeismoStimulus.html
> George
>=20


A friend of mine sent me a copy of the Engineering & Science =
Magazine
published by Cal Tech that had an article about upgrading the Southern
California Seismic Network. This might be of interest to us for three
reasons-



I. Someone in PSA might be involved with this upgrade and could tell
us a little about it, it sounds interesting.


2. What will happen to the equipment that is replaced, maybe =
PSN
could help in distributing any surplus equipment to amateur =
seismologists
like us.


3. I assume we all will benefit from the data from the enhanced
network.


You can read more about it and who is doing it at-


=
http://eands.caltech.edu/articles/LXXIII1/2010_Winter_SeismoStimulus.html<=
br>

George


=