[Geysers] Conduit dimensions - sources?

[Paul Strasser]

Brian - I wish to be charitable.

Those depths that Rinehart cites are, well, unverified by any other
researched anywhere in the world.

I hope that makes it clear. That book originally came with a huge chunk of
NaCl attached to the inside front cover, if you catch my drift.

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: Thursday, October 01, 2009 6:55 PM
To: geysers at lists.wallawalla.edu
Subject: [Geysers] Conduit dimensions - sources?

I've been reading through Rinehart's "Geyers and Geothermal Energy", and
came across a rather unusual claim - that there was a thermister measurement
in Old Faithful at a depth of 175 m (!!). I'm trying to get the original
reference (a paper of Rinehart's from 1969), but it brought up a raft of
other questions. Principally, what geysers and hot spring have been plumbed,
and what is known about their physical dimensions of their conduit systems?
What I've got so far:

Old Faithful: 22 m deep (or 175 m, if Rinehart is correct)
Great Geysir: Top basin 16 m wide by 1 m deep, conduit below 3 m wide and 20
m deep.
Lion: 24 m deep, with a 1" constriction at 10 m, water stands 5 m below the
top.
Great Fountain: 12 m deep and roughly 4 m by 6 m, fed from a small vent at
the bottom.
Sapphire Pool: about 10 m deep, diameter 8 m (pre-earthquake; source notes
it's "bigger now", without specifics).
Steamboat: NE vent 8.5 m deep with water 3.4 m below sill in SW vent, SW
vent 25.9 m deep ("the greatest depth we have attained in a natural
Yellowstone vent").
Echinus: 3.4 m below the overflow level
Cinder Pool: 9 m in diameter, 18.3 m deep is interface, with molten sulfur
below that to 21.3 m depth.
Grand Prismatic Spring: 75 m by 90 m, 49 m deep (but I don't have a primary
source on this)
Excelsior: (nothing yet, just discharge statistics)

I also have one reference that mentions when talking about Cinder Pool "“
at
least 13 m (44 ft) of overlying water is necessary to provide the pressure
required for temperatures of 120 °C to exist in a saturated water-steam
system; less than 10 % of the vents probed in Yellowstone Park have such
free vertical clearance, and of these, only Cinder Pool and Steamboat Geyser
are in Norris Basin
". That suggests that they had a volume of data large
enough to talk about statistics... but I don't know where.

Does anyone have other data? Other primary sources to look at? Other
interesting tidbits about directly measured or inferred conduit geometries
(thermal, seismic, or chemical)?

-- 
Brian Davis
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