How far apart are the two sides of the rim in the photo located at:
URL: http://volcano.und.edu/vwdocs/msh/gifs/5784.gif
I believe it was taken on May 19, 1982. I am interested in doing some
measurements on the photo.
Mark
Dear Mark,
The only way I can find the distance between the two sides of the
rim is to measure it on a topo map. Since you want to make measurements
(presumably of the small eruption cloud), I would think you would prefer
to determine the picture scale yourself! But, to give you some help, I
measured a distance of 2.0 +/- 0.1 km on the map given in the back of
USGS Professional Paper 1250: The May 18, 1980 Eruption of Mt. St.
Helens, Washington. Good luck on your project!
Chuck Wood
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