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editing prospecting page

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Philip Sargent
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handbook/l/2017-07-22_10-45_Sat.html
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@@ -13,12 +13,10 @@
<p>Phil Withnall's GPS track on the morning of 22nd July 2017.
</p>
<p>This illustrates why it is a good idea to record a track when prospecting: it is very easy to fail to recollect accurately which cave entrance was which, and a tarck is an enormous help in finding the damn thing later.
<p>This illustrates why it is a good idea to record a track when prospecting: it is very easy to fail to recollect accurately which cave entrance was which, and a track is an enormous help in finding the damn thing later.
<p>The concentrated mess in the lower left can be seen on <a href="https://www.bing.com/maps/search?q=47.69913%2C+13.82541&cp=47.699151%7E13.825111&lvl=18.2&style=h">Bing maps</a> at 47.69915 N 13.82511 E.
<p class="caption">Photo &copy; Phil Withnall, 2017</p>
<p>The concentrated mess in the lower right can be seen on <a href="https://www.bing.com/maps/search?q=47.69913%2C+13.82541&cp=47.699151%7E13.825111&lvl=18.2&style=h">Bing maps</a> at 47.69915 N 13.82511 E.
<hr /></body>

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handbook/look4.htm
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@@ -14,7 +14,7 @@
<figcaption>Part of the 'route' across the plateau - note the cairns<br />click for larger image</figcaption>
</figure>
<p>Much of the area of <a href="../guidebook/plateau.html">the Loser Augst-Eck plateau</a> is rough limestone
pavement (<b>karren</b>), liberally covered with dense areas of dwarf pine,
pavement (<a href="https://www.philippe-crochet.com/galerie/karst/details/18/lapiaz-et-sites-ruiniformes"><b>lapiaz</b></a>, <b>karren</b>), liberally covered with dense areas of dwarf pine,
and interspersed with small cliffs, open shafts and snow patches. The latter,
in particular, can change the appearance of the plateau from year to year,
and even from week to week in the summer.
@@ -24,7 +24,10 @@ very disorientating. There are few landmarks recognisable from a distance or
from a variety of angles, and little chance to relate the ground to the
1:25000 Austrian Alpine Club map. If you are only 5m off the route you may
have lost the way on.
<figure class="onleft">
<a href='/handbook/l/IMG-20250116-WA0000.html'><img src='/handbook/t/IMG-20250116-WA0000.jpg' alt="a bit of the plateau" /></a>
<figcaption>a bit of the plateau</figcaption>
</figure>
<p>So walking on the plateau is difficult, and in bad weather (as in
July 2019) can be
@@ -39,23 +42,27 @@ but just a few of them lead to really significant finds! Much of the
exploration now is beyond the Steinbr&uuml;cken bivvy in the area known as
<a href="../guidebook/remote.html">the far plateau</a></p>
<p><b>Shaft bashing:</b>&nbsp;<a href="/1623/200/l/lrh0.htm">
<img src="/1623/200/t/lrh0.jpg" class="icon" width="143" height="173"
<figure class="onleft">
<a href="/1623/200/l/lrh0.htm">
<img src="/1623/200/t/lrh0.jpg" class="icon" height="173"
alt="Lost Rucksack Hole 0" /></a>&nbsp;
<a href="/1623/200/l/lrh.htm"><img src="/1623/200/t/lrh.jpg"
class="icon" width="123" height="169"
<a href="/1623/200/l/lrh.htm"><img src="/1623/200/t/lrh.jpg"
class="icon" height="173"
alt="Lost Rucksack Hole" /></a>&nbsp;
<b>Bolt placing:</b>&nbsp;<a href="/1623/200/l/lrh1.htm"> <img
src="/1623/200/t/lrh1.jpg" class="icon" width="143" height="170"
<a href="/1623/200/l/lrh1.htm"> <img
src="/1623/200/t/lrh1.jpg" class="icon" height="173"
alt="Lost Rucksack Hole 1" /></a>&nbsp;
<a href='/handbook/l/2017-07-22_10-45_Sat.html'><img src='/handbook/t/2017-07-22_10-45_Sat.jpg' height="173"/></a>&nbsp;</p>
<p class="caption">(Typical shaft bashing, often easiest on ladders: Adam Cooper
near Top Camp in 1993. Bolt placing usually easier on rope, but still in
T-shirt &amp; shorts!)</p>
<div class="onleft">
<a href='/handbook/l/IMG-20250116-WA0000.html'><img src='/handbook/t/IMG-20250116-WA0000.jpg' alt="a bit of the plateau" /></a>
<p class="caption">a bit of the plateau</p>
</div>
<figcaption>Shaft bashing and bolt placing. Adam Cooper
near 1993 Top Camp. </figcaption>
</figure>
<p>All of this has made any systematic prospecting difficult, so there is
still the chance of a significant discovery quite close to Top Camp or to
other known caves. Life is made even more difficult through sloppy recording
@@ -70,12 +77,12 @@ href="survey/lasers.htm">fixed points</a> located by laser
theodolite/rangefinder from local trig. points.</p>
<div class="onright">
<figure class="onright">
<a href="essentials.html">
<img src="gps-essentials/essentials2024divert.jpg" alt="screenshot of the GPS file" width="250" /></a>
<p class="caption">GPS entrances</p>
</div>
<figcaption>GPS routes and entrances</figcaption>
</figure>
<p>The <a href="../caves">cave index</a> page contains as much description as we have of every cave we know
about. To avoid any possibility of errors, this includes some info on caves
not explored by CUCC, though for reasons of Austrian Kataster politics, these
@@ -93,13 +100,21 @@ are mostly broken. To find current QMs (Question Marks, i.e. open leads) look at
<p>Today we really need a GPS-enabled map of entrances, and we have one! Instructions for
downloading it are on the <a href="essentials.html">Essential GPS</a> page.
</p>
<div class="onleft">
<figure class="onleft">
<a href='/handbook/l/2024-03-07_plateau_jumble.html'>
<img src='/handbook/t/2024-03-07_plateau_jumble.jpg' alt="another bit of the plateau" width="250" /></a>
<p class="caption">another bit of the plateau</p>
</div>
<img src='/handbook/t/2024-03-07_plateau_jumble.jpg' alt="another bit of the plateau" height="150" /></a>
<figcaption>another bit of the plateau</figcaption>
</figure>
<figure class="onleft">
<a href='/handbook/l/2017-07-22_10-45_Sat.html'>
<img src='/handbook/t/2017-07-22_10-45_Sat.jpg'
alt="GPS track 2017" height="150"/></a>&nbsp;
<figcaption>2017 prospecting track</figcaption>
</figure>
<h4>Re-finding the entrances</h4>
<p>This is surprisingly much more difficult than you might suppose, even with <a href="/handbook/survey/gps.htm">GPS accurate to a few metres</a> (but only if you do it The Expo Way). Always <a href="/handbook/computing/gpxupload.html">record a GPS track</a> during a prospecting day, as well as doing <a href="/handbook/survey/gps.htm">the Right Thing</a> to record each entrance.
<h4>Cave Numbering Conventions</h4>
<p>The caves are numbered and tagged in a number of different ways.
@@ -147,11 +162,11 @@ them a number. In some cases they are completely unexplored, but looked like
good prospects when first found.</dd>
</dl> -->
<p>In the tables (and the cave descriptions), bearings are quoted with a
<p>In the cave descriptions, bearings are quoted with a
series of standard <a href="abbrev.htm">abbreviations for landmarks</a>,
which gives a good indication of which ones are most useful.</p>
which gives a good indication of which ones are most useful. Today thogh we just use GPS.</p>
<p>There is also a table of which numbers are CUCC ones and of numbers which
<p>There is also a table of which entrance numbers are CUCC ones and of numbers which
appear on entrances which are wholly misleading, the
<a href="cockup.htm">Cock-Ups</a>.</p>
@@ -160,7 +175,7 @@ which appear in the "known" and "marked" lists. Though marked, this may not
be correctly with their Austrian Kataster number. The aim is to mark all of
these correctly with a metal tag bearing their 'official' number over the
next few years. Also, many known caves do not have surface surveys to their
entrances.</i></p>
entrances and GPS data has been badly recorded.</i></p>
<hr />

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handbook/survey/l/insert-ringed.html
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@@ -24,7 +24,7 @@ Get the estimated horizontal accuracy of this location, radial, in meters.
<p>
We define horizontal accuracy as the radius of 68% confidence. In other words, if you draw a circle centered at this location’s latitude and longitude, and with a radius equal to the accuracy, then there is a 68% probability that the true location is inside the circle.</em></blockquote>
<p>TTFF is "time to first fix". This means I would have had to wait <em>at least</em> 2 seconds after stopping moving before I would have any hope that a photo taken with the camera on this phone would get an accurate fix embedded in it.
<p>TTFF is "time to first fix". This means I would have had to wait <em>at least</em> 2 seconds after stopping moving before I would have any hope that a photo taken with the camera on this phone would get even a bad fix embedded in it. Sometimes this is 30s.
<p>
GPStest online <a href="https://github.com/barbeau/gpstest/blob/master/FAQ.md">documentation</a> explaining all the information on the screen.