IRIS EPO

For educators, college/university faculty and professionals interested in the instruction of seismological concepts in primary and secondary classrooms.

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Active Message Threads for February 2008

Larry Braile
Feb. 28, 2008, 9:16 a.m.
Some recent earthquake and AS-1 seismogram information: 1. The Feb. 21, 2008 NE Nevada earthquake produced a seismogram with excellent S arrivals at many stations (see attached seismogram for the WLIN station or examine records available for download from SpiNet). Because of the very visible S arrivals and the location of the event (away from the west coast), this event provides an excellent opportunity for developing an S minus P Eq location activity using only AS-1 records. I have... [more]
No replies
Craig Messerman
Feb. 26, 2008, 2:28 p.m. - Feb. 26, 2008, 11:10 p.m.
Hi All, I'm attaching our record of the Wells quake. My students are analyzing it this week, but the arrival interpretation is difficult. The first motion seems to be the low amplitude waves that arrive at 14:19:18, but then a very distinct and stronger phase arrives just 21 seconds later, too soon to be an S. Could be PP? If that's the case then the S arrival seems buried between that phase and the surface arrivals. We haven't had the chance until now to work with such a close and recent e... [more]
Replies
Alan Jones
Feb. 21, 2008, 10:03 p.m.
Craig, I have never tested AmaSeis on a network directory. One thing for sure, you will need the DLL files on the machine which is actually running AmaSeis regardless of where the as1.exe program resides. Why not just install on each machine? You can run on one machine and other machines can see what is happening on the host machine using the TCP/IP capability. I use this all the time. I can see, in real-time, from home what my machine is doing at the University. Alan ----- Original Mess... [more]
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Craig Messerman
Feb. 21, 2008, 7:43 p.m.
I tried this week to install Amaseis on an open network directory for my students to use in any lab. I could see the OWL52 file when looking from the computer I installed it from (and the program worked), but when I had a student try the program from a computer lab, I got the error. Can we use Amaseis from a network directory? Craig Messerman Sentinel High School, Missoula, Montana >>> "Alan Jones" <AlanJones@stny.rr.com> 02/03/08 06:36 AM >>> Jerry, Thanks for the heads up. I switched to m... [more]
No replies
Michael Hubenthal
Feb. 15, 2008, 2:48 p.m.
Here is an opportunity that comes from the Joint Oceanographic Institutes that may be of interest to some of you. Deep Earth Academy Teacher Fellowship 2008-2009 The Consortium for Ocean Leadership is seeking an enthusiastic teacher for a one-year fellowship in Washington, DC. The teacher will work with Deep Earth Academy staff to develop ocean science curricula, produce teacher-training workshops, maintain communication within a community of educators and assist with conference logist... [more]
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John Lahr
Feb. 12, 2008, 10 a.m.
We are trying to get away from oil damping of the AS-1 instruments and have developed a magnetic damping alternative. A batch of magnetic dampers has been purchased for the next workshop and there are some extra dampers available for teachers who would like to make the switch away from oil. The design, which was developed by Chris Chapman, is described here: http://jclahr.com/science/psn/chapman/as1%20damping/index.html One of the negative consequences of oil is the difficulty of moving ... [more]
No replies
John Lahr
Feb. 12, 2008, 9:44 a.m.
Dear Educators, Alan Jones has written a number of remarkable programs, including of course AmaSeis, the program used to collect and analyze data from our AS-1 seismic systems. SeismicEruption is another great educational program that you've probably seen but might not have used with your classes. Teresa Tucker of Jackson, Michigan, asked Alan if there were any guided lessons for use with Seismic Eruption that her student teacher could use with her class. Alan recommended one of Larr... [more]
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John or Jan Lahr
Feb. 4, 2008, 10:04 a.m.
I want to bring your attention to some wonderful seismology-related animations that are being created by Jenda Johnson for IRIS. They are posted here: http://www.iris.edu/about/ENO/aotw/archive/ and new animations will be added each month. Cheers, John
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Alan Jones
Feb. 2, 2008, 8:34 a.m. - Feb. 3, 2008, 7:48 a.m.
I have made some small changes in AmaSeis and in the Stations program. 2008.02.02: At request of John Lahr, Normalized the Fourier Transform so that when analyzing noise, the amplitude remains relatively constant as you extract different length signsls. Stations program in AmaSeisAux now automatically downloads the IRISEdStations.xml file from the IRIS download site. The Stations program displays a map of the world showing the stations that are providing real-time upload of their data. You ... [more]
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hubenth@iris.edu
Feb. 1, 2008, 10:39 a.m.
Any AS-1s close enough to see this? I checked the day view on the Rapid Earthquake Viewer but couldn't see anything. In any event it is an interesting example of weather related events that can be detected vai seismic instruments. Best Wishes, Michael ---------------------------- Original Message ---------------------------- Subject: Ice Quake (?!) From: "Steve Kluge" <kluge.esprit@GMAIL.COM> Date: Fri, February 1, 2008 9:21 am To: ESPRIT@LISTSERV.ONEONTA.EDU -----------------... [more]
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