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 January 2008

Katie Stofer
Jan. 22, 2008, 12:15 p.m. - Jan. 31, 2008, 9:44 a.m.
From the Maryland Science Center ... I have a more general question about quakes that I hope one of the experts can help me with. We have been using a machine to simulate earthquakes that ostensibly varies magnitude - Pitsco's Epicenter Earthquake Simulator. They no longer make this and now sell instead the EQ Tremor Table <http://catalog.pitsco.com/store/detail.aspx?KeyWords=engineering&by=20&ID=4229&c=0&t=0&l=0>, which, instead of magnitude, varies cycles per second (frequency), fro... [more]
Replies
John Lahr
Jan. 30, 2008, 9:53 p.m.
IRIS is now accepting applications for the Seismographs in Schools Program for 2008. For details, see: http://www.iris.edu/edu/as1/apply/ Cheers, John
No replies
John Lahr
Jan. 15, 2008, 10:57 p.m.
Paul Denton of the British Geological Survey has compiled a good review of school seismology and posted it here: http://www.bgs.ac.uk/scripts/downloads/start.cfm?id=667 I highly recommend taking a look at his report, titled "School Seismology Support Documents." Cheers, John
No replies
Margaret E. Doerr
Jan. 13, 2008, 8:31 p.m. - Jan. 14, 2008, 2:42 p.m.
Hello, Lindsay, I used to be the person responsible for the AS-1 Seismograph at Montgomery High School. However, I have left the school, and now Tim Murphy, the Science Dept. Chairman, will be taking over responsibility. I would like to unsubscribe from the IRISEd mailing list. I would appreciate it if you would add Mr. Murphy to the list in my place. His email address is [ fcp://@mail.suhsd.k12.ca.us,%238850456/Mailbox/Timothy G. Murphy ]timothy.murphy@suhsd.k12.ca.us Thank you, ... [more]
Replies
  • Change - Dwyer, Valesca - Jan. 14, 2008, 2:42 p.m.
Margaret E. Doerr
Jan. 13, 2008, 8:31 p.m.
Hello, Lindsay, I used to be the person responsible for the AS-1 Seismograph at Montgomery High School. However, I have left the school, and now Tim Murphy, the Science Dept. Chairman, will be taking over responsibility. I would like to unsubscribe from the IRISEd mailing list. I would appreciate it if you would add Mr. Murphy to the list in my place. His email address is [ fcp://@mail.suhsd.k12.ca.us,%238850456/Mailbox/Timothy G. Murphy ]timothy.murphy@suhsd.k12.ca.us Thank you, ... [more]
No replies
John Lahr
Jan. 9, 2008, 11:40 p.m.
Educators, The west coast of North America has been active lately. There was another event on the Queen Charlotte Islands fault on January 9th and a magnitude 6.4 event on the Blanco Fracture Zone on the 10th. Professor Robert Butler generated this writeup, to which I added my CHOR record: http://jclahr.com/science/psn/as1/blanco08/index.html Cheers, John
No replies
John or Jan Lahr
Jan. 5, 2008, 10:40 p.m.
The two M6.5 earthquakes of 1/5/2008 on the Queen Charlotte Islands Fault were well recorded by AS-1 stations all across the US. I've posted some information from Robert Butler, along with two seismograms. http://jclahr.com/science/psn/as1/queen08/index.html Cheers, John
No replies
Larry Braile
Jan. 2, 2008, 8:23 a.m.
Just after the November 14, 2007 M7.7 N. Chile Earthquake I noticed an unusual high-frequency arrival overlapping the long period surface waves on the seismogram for this event that was recorded on the WLIN AS-1 station. I high-pass filtered the seismogram and assumed that the resulting arrival was from an aftershock about 29 minutes after the main shock. I checked with the USGS earthquake list for the next few days and didn't find an aftershock at the appropriate time so I looked for... [more]
No replies