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88 lines
3.5 KiB
HTML
88 lines
3.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
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<title>Why Eislufthöhle?</title>
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<style type="text/css">
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dd { display: inline; margin-left: 0pt}
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dt { font-weight: bold}
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</style>
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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</head>
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<body>
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<h1 align="center">Why Eislufthöhle?</h1>
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<p>
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This shows the caves in the area with 4 additional fake vertical shafts
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indicating the entrance locations and depths of (from left to right)
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<a href="../../plateau/97.htm">97 (Schneewindschacht)</a>,
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<a href="../../plateau/76/76.htm">76 (Eislufthöhle)</a>,
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<a href="../../plateau/107.htm">107 (Gemshöhle)</a>, and
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<a href="../../plateau/82.htm">82 (Bräuninghöhle)</a>:
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</p>
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<img src="http://www.survex.com/~olly/eisluftdepth.png" />
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<br />
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<a href="http://www.survex.com/~olly/all.3d">[Download 3d file of this]</a>
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<p>76 is striking for going notably deeper (in absolute terms) than anything
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else apart from the lower reaches of Stellerweg.
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</p>
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<p>The caves under the <a href="../../smkridge/">Schwarzmooskogel ridge</a>
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show definite levels of major horizontal phreatic development. These can be
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seen to some extent in the screenshot above, but they're clearer if you play
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around with the survey in Aven. The Austrian cavers tell us that corresponding
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phreatic levels are seen in many caves all over the surrounding parts of
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Austria, so there are good reasons to think they're not a phenomenon only
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associated with this ridge.
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</p>
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<p>These levels haven't been observed so clearly in the caves out under the
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<a href="../../plateau/">Loser Augst-Eck plateau</a> subarea, but Tony Malcolm
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<a href="../1981/tmelev.htm">noted signs of them</a>. Exploration in
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the early years of CUCC in Austria followed a pattern of "drop pitches
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to a sump or other conclusion, derig, try another entrance" - the major
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horizontal levels under the ridge were mostly found much more recently
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once we got a bit more thorough.
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</p>
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<p>A particularly notable feature of a number of the caves in this area
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is strong outward draughts (in Summer at any rate). The very names of
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the caves indicate this: Eislufthöhle is <i>"Ice air cave"</i> or
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<i>"Ice breath cave"</i>, while Schneewindschacht is <i>"Snow wind shaft"</i>.
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99 is noted as having a <i>"strong draught"</i>.
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</p>
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<p>Wildly hypothesising for a moment, this might indicate air coming through
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from higher entrances, in the same way that the strongly draughting entrances
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on the East side of the Schwarzmooskogel ridge are most likely due to airflow
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through from the higher entrances of
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<a href="../../smkridge/161/top.htm">Kaninchenhöhle</a> and
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<a href="../../smkridge/161/136.htm">Steinschlagschacht</a>. It would be very
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interesting if there was significant horizontal development linking some of
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the caves under the plateau with those under the ridge!
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</p>
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<p>Scanned surveys (these are missing from the website - I need to clean
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them up and stick them in, but for now, here they are):</p>
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<ul>
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<li /><a href="http://www.survex.com/~olly/76upper.png">Upper half of 76</a>
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<li /><a href="http://www.survex.com/~olly/76lower.png">Lower half of 76</a>
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<li /><a href="http://www.survex.com/~olly/99sketch.png">3D sketch of 99</a>
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</ul>
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<hr />
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