My memory (just ask my wife) is always a bit shaky but I believe that
the 300 mph figure comes from the info film at the visitor's center. In
any case the 2-3 foot diameter trees on the ridge were knocked flat so
it was moving at a pretty good clip. Maybe I'll post a shot of what's
left of some trees there.
Chuck Norcutt
usher99@xxxxxxx wrote:
> Thanks for posting, Chuck. Niice light indeed and well captured. Well
> worth waiting for. The last defies that the 50:50 horizon ratio needs
> to be avoided.
> I am no geologist, but perhaps the 300mph seems a bit much given the
> viscosity of the rock/ash/gas miixture even at a steepish gradient.
> I'd buy 1/3 to 1/6 that rate as more reasonable as a maximal flow rate.
> Still, better run fast. I'd bet the 5D doesn't like ash given its
> performance in Antartica. If it's erupting, consider a D3. :-)
>
> Mike
>
>
>
>
> Photos in the order they were taken. The first three are Chinook Pass
> on the east side of Mt. Rainier including the one already shown here.
>
> The last is looking into the caldera of Mt. St. Helens across the
> valley
> near the visitor's center. Had I been standing in that same spot when
> it erupted I'd have not only been dead but probably never found. The
> pyroclastic flow went down into the valley and then back up the ridge I
> was standing on and bowled right over the top of the ridge at about 300
> mph. But Google Earth says Mt. St. Helens is about 30 miles away from
> the visitor's center so I'd have had about 6 minutes to make a run for
> it. :-)
>
> More Mt. St. Helens to come. The light was good.
> <http://www.chucknorcutt.com/Mt%20Rainier/index.htm>
>
> Chuck Norcutt
> --
>
>
--
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