PSN-L Email List Message

Subject: Real time traces
From: Brett Nordgren brett3nt@.............
Date: Thu, 13 Aug 2009 15:47:26 -0400

Hello All,

We just put up a Web page which displays some near real time outputs from 
two of our experimental vertical feedback seismographs.  There are displays 
showing three different combinations of sensitivity and low-pass filtering, 
which highlight different types of ground motion.

Currently these are updated every 30 minutes, though in the future we may 
be able to reduce the update interval. As these are experimental 
instruments, it may happen that they will occasionally be off line as we 
make improvements.

We sometime see short data dropouts, possibly related to the convoluted 
data path we use to distribute the gif's.  Data starts in Dave Nelson's 
seismo vault in California, arrives via the Internet at my WinSDR client in 
New Jersey where the gif files get generated.  They then are uploaded to my 
Web site, hosted in Pittsburgh... and so on.  I am still working to figure 
out the cause of the data drops.  Suggestions welcomed.




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