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Active Message Threads for December 2007

John Lahr
Dec. 30, 2007, 2:06 p.m.
The AS-1 seismograph stations provide an exciting way to study the Earth via earthquakes. I've been trying to think of some other uses that these instruments could be put to that involve inquiry. Here are a few: * What is the best location in the room for the AS-1 seismograph? This would involve figuring out a way to quantify "best," perhaps in terms of the background noise. What is the effect of being near a window (sun light on the spring), near a heat vent (convection within ... [more]
No replies
paul denton
Dec. 20, 2007, 10:57 a.m.
I have had a school in the UK concerned about the "carbon footprint" of having a dedicated PC running 24/7 to act as a datalogger and TCP sever for the amaseis datalogger system. Has anyone every tried using the amaseis datalogger system with a serial-ethernet convertor attached to the seismometer and having amaseis running on a remote PC. I realise that you still need to have a PC running 24/7 with this system however schools will usually have a central server which is running anyway and ... [more]
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John or Jan Lahr
Dec. 19, 2007, 8:59 p.m.
Russ at IRIS has found that the ftp settings that I had described in my instructions were causing many unnecessary entries to the ftp log file at IRIS. I've modified the posted instructions: http://jclahr.com/science/psn/as1/snagit8/snagit8_setup.html In particular the screen shown here: http://jclahr.com/science/psn/as1/snagit8/snagit4.jpg has been modified to eliminate the extra log-file entries. If you are currently sending your helicorder image to IRIS, please make those changed in S... [more]
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John Lahr
Dec. 12, 2007, 11:27 p.m.
Educators, I've posted a page with information on today's M 5.6 event in the Queen Charlotte Islands: http://jclahr.com/science/psn/as1/queen07/index.html Although not that large, this event should have been detected by all of the US AS-1 stations because of its proximity. Cheers and Happy Holidays, John #################################/ John C. Lahr ################################/ Emeritus Seismologist ###############################/ U.S. Geological Survey =======================... [more]
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John Lahr
Dec. 9, 2007, 10:06 a.m.
>Globe with Earthquake Location > > >7.8 Mw - SOUTH OF FIJI ISLANDS > > I've posted an information page written by Bob Butler on this event: http://jclahr.com/science/psn/as1/figi07/index.html With any luck everyone should have a good recording of this earthquake. Because of it's depth, the body waves are well expressed and the surface waves are relatively subdued. Cheers, John #################################/ John C. Lahr ################################/ Emeritus Seismologist ... [more]
No replies
John Taber
Dec. 6, 2007, 4:26 p.m.
Dear Colleagues and Friends, IRIS is currently redesigning its website with a target launch date of June 2008. Our primary goals for this project are to gain a more professional look, make specific information easier to find, and better meet the needs of all website visitors. We are seeking input from anyone who interacts with the IRIS website, whether you are an IRIS member, a researcher seeking data, an educator seeking resources, or a curious individual interested in seismology. ... [more]
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Alan Jones
Dec. 6, 2007, 11:29 a.m.
This was in this morning's paper:
No replies