[irised] Illinois earthquake

[John Taber]

IRIS showed the location name (but not the map location) to be in  
Indiana due to the way an automatic algorithm comes up with the place  
name.  It was so close to the border that a rounding error caused the  
wrong state name to be used.  It has now been corrected.

John Taber


On Apr 20, 2008, at 9:54 PM, Michael Hamburger wrote:

> For once, the media got it right!  The earthquake is centered just  
> west of Mt. Carmel, Illinois, and most of the damage was centered  
> in a 10-20 mile radius around that area.  The location is indeed  
> close to the Indiana border, and though we'd like to claim it as  
> "The Great Indiana Earthquake of '08", it clearly belongs to our  
> neighbors across the Wabash River.  We're in the process of  
> deploying portable seismographs and GPS instruments to see if we  
> can track the surface deformation and aftershocks associated with  
> this interesting event.
>
> Thanks for the question!
>
> Michael Hamburger
> Indiana University
>
> Lavender, Rebecca (Faculty - lavenderrn) wrote:
>> I have a question: why is the media reporting the quake's  
>> epicenter in Illinois, while IRIS ha it Indiana?  I know they're  
>> border states and all, but why the confusion?  Or am I the only  
>> one confused?!
>> Rebecca Lavender
>> Girls' Cross Country/Track Coach
>> David Lipscomb High School
>> 3901 Granny White Pike
>> Nashville, TN 37204
>> (615)966-6463
>> -----Original Message-----
>> From: irised-bounces at iris.washington.edu on behalf of cdewolf at chsd.us
>> Sent: Sat 4/19/2008 1:04 PM
>> To: Jay Sinclair
>> Cc: irised at iris.washington.edu
>> Subject: Re: [irised] Illinois earthquake
>>  Really? I just looked at recent earthquakes at the USGS site and  
>> it is there. As it was felt by people in the Grand Rapids area -  
>> and some in our county, I sent an image of our station's  
>> seismogram to Channel 13 in Grand Rapids. They used it in their  
>> web-based story on the quake and came up to do some filming as I  
>> did a lesson relating to the quake with one of my classes.
>> It was great to see the amount of coverage the science behind  
>> earthquakes got. They aired versions of the story using this  
>> footage at 6, 11 yesterday and 7:30 this morning.
>> It was ironic that our "local" station out of Cadillac did not  
>> even respond to my e-mail.
>> Now if I can just get my school to let me past the firewall again  
>> and get my station back on the IRIS site......
>> Cris L. DeWolf
>> Editor, The Michigan Earth Scientist
>> Michigan Earth Science Teachers Association
>> THEMIS-GEONS Ambassador
>> NAGT Central Region State Contact
>>> We picked this quake up strongly on our AS-1, but now it has been
>>> deleted by the USGS. Why would this be?
>>>
>>> Jay
>>>
>>> Jay Sinclair
>>> OESTA Chair
>>> Past President
>>> Michigan Earth Science Teachers Association
>>> sinclair at ida.k12.mi.us
>>>
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> -- 
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> _/ Michael Hamburger                                                _/
> _/ Dept. of Geological Sciences    Phone (Office):  (812)855-2934   _/
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