I use the Clark 1866 Geoid to calculate the coordinates of each location in
what ever unit I want and then use Algebra's Pythagerean Theorem to
calculate the distance. Not the quickest way by hand, but a PC can handle
the calculations in seconds.
----- Original Message -----
From: Khosrownia, Ghassem SPK <GKhosrownia(--nospam--at)spk.usace.army.mil>
Cc: Kutch, Wayne E NWS <Wayne.E.Kutch(--nospam--at)NWS02.usace.army.mil>; Wong, Anita J
Sent: Wednesday, January 12, 2000 2:41 PM
Subject: ??finding distance of E.Q. from given location??
> In trying to determine distance from epicenter of Hector-Mine and
> earthquakes from some project sites I found the following link that can
> in converting the longitude latitude information to distances
> http://www.best.com/~williams/gccalc.htm. I have not looked at exactly how
> this is developed, but it seems the site is developed by a pilot for a
> pilot. Have you used something like this before? Would you know of a more
> reliable way to estimate the distances (except scaling off the maps)?
> Thanks for any input and feedback.