At 08:51 AM 9/22/99 +0200, you wrote:
>Usgs world telemetry at http://aslwww.cr.usgs.gov/Seismic_Data/heli2.htm
>I seen your Tato Station event file of Taiwan Quake. Where do you have
>downloaded the sac file?
>
>Francesco

Francesco,

This is how I receive the data from the USGS. I wrote two command line C
programs to do this. One program connects to the USGS using TCP/IP and
saves the data received from the USGS server to disk. These files, one for
each station I am monitoring, is like the daily record file in SDR except
the data received is in mini-seed format. This program runs all of the time
as a NT service on my Web server system.  I am able to receive data all of
the time since I have a full time connection to the Internet with a high
speed DSL connection.

The second program is used to create PSN formatted event files from the
data saved by the other program. On the command line I enter the station
ID, start time and how many minutes to save, and the program tries to
create the PSN event files. Since the data to the USGS and then to me all
use the Internet the reliability is not that great....

I am planning to create a web page similar to the Data Request page at
http://www.seismicnet.com/request.html so anyone on the Internet can access
the data I am receiving.

-Larry Cochrane
Redwood City, PSN



_____________________________________________________________________

Public Seismic Network Mailing List (PSN-L)