Pinholer question?

Date view Thread view Subject view Author view

From: Deborah Hunt (dhunt@exploratorium.edu)
Date: Thu May 04 2000 - 09:33:26 PDT 

Date: Thu, 4 May 2000 09:33:26 -0700 (PDT)
From: Deborah Hunt <dhunt@exploratorium.edu>
Subject: Pinholer question?
Message-ID: <Pine.GSU.4.10.10005040932360.15615-100000@isaac>

Hi, Pinholers.
Got this message and since I'm a webmaster and not a scientist, I was
hoping to pick your brains on how to answer this.

Thanks in advance,
Deb

---------------------------------------------------
Deborah Hunt
Internet Resource Specialist
Exploratorium
3601 Lyon Street
San Francisco, CA 94123
Voice: 415-353-0485
Fax: 415-561-0370
email: dhunt@exploratorium.edu

---------- Forwarded message ----------
Date: Wed, 03 May 2000 22:42:18 PDT
From: Dillon Dutton <drufusd@hotmail.com>
To: dhunt@exploratorium.edu
Subject: Need info

Hi,

I was at the AGU teacher's classes in December. They had a
nice little activity where we played S and P waves and were
able to locate an earthquake epicenter. I want to do this
with my students, but can't remember how you convert the
seconds to distance (seconds = difference between the
'arrival' of the P wave and the 'arrival' of the S wave.

With three 'stations' one should be able to locate the
epicenter by the intersection of the circles drawn about
the stations representing the difference in arrival times.
But, what distance is used for each second? And what is
the real distance used for real earthquakes and why?

I'm sure it's quite simple, but I can't figure it out.

Thanks, hope you can help or steer me the right way.

Dillon Dutton (drufusd@hotmail.com)
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Oct 19 2000 - 11:10:49 PDT