[Geysers] RE: YNP spring depths

[Paul Strasser]

Brian wrote:  

" All in all, it still surprises me how shallow some of these are"

These are the depths that can be plumbed.  It is not the depth of the
plumbing system but rather the depth that a probe can go before twists and
turns deny getting an instrument to any greater depth.

You probably know that, but I just wanted people to know that Grand's
plumbing system certainly goes deeper than 20-25 feet.

Paul Strasser

-----Original Message-----
From: geysers-bounces at lists.wallawalla.edu
[mailto:geysers-bounces at lists.wallawalla.edu] On Behalf Of Davis, Brian L.
Sent: Sunday, October 04, 2009 3:18 PM
To: geysers at lists.wallawalla.edu
Subject: [Geysers] RE: YNP spring depths

TSBryan at aol.com wrote:

> The following plumbed depths were reported by Allen
> and Day (1935), listed as reported [my additions in
> brackets]: name, depth (feet)...

Thank you very much! That gives an ideal overview of a lot of depths, in a
lot of different places. How well do Allen & Day describe their methods?
Clearly yet another primary source I'm going to have to dig into... as a
caver, considering the conduit structures below grade is a bit of an
obsession. Standing there looking at Mammoth Terrace for instance the
average caver really feels bad that they're on-site a couple of million
years too early. And when I look at something like Midway, with both the
huge size of Grand Prismatic and the huge outflow of Excelsior, it really
brings questions to mind. How well known is the bottom dimensions of
something like Grand Prismatic (have there been any mapping efforts)?

All in all, it still surprises me how shallow some of these are; I've got
systems with a total depth of 12' erupting in my backyard, although I can't
get the heating system and volume required by a "real" geyser (well, that
and for research I like them going off more frequently than once or twice a
day... or longer).

-- 
Brian Davis

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