Subject: geographic centers & ozzy tripoints cont<br/>
Date: Dec 18, 2000 @ 21:56<br/>
Author: michael donner (michael donner &lt;m@...&gt;)<br/>
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<div id="ygrps-yiv-1998980771">an interesting jump page<br/>
<a rel="nofollow" target="_blank" href="http://www.auslig.gov.au/facts/centre.htm">http://www.auslig.gov.au/facts/centre.htm</a><br/>
at the site mentioned by brendan & arif<br/>
gives 5 different methods for determining geographic centers<br/>
& also reveals that the most primitive of these<br/>
which it calls the median method<br/>
& which is the one i used for my first wild try at the geog center of europe<br/>
  namely just averaging the extremities of lat & long<br/>
actually produces a result for the continent of australia that is very much<br/>
closer to both the average & the median of all 5 results than does any of<br/>
the supposedly more sophisticated methods<br/>
<br/>
thus the crudest result might also fairly be called the center of centers<br/>
at least in the case of australia<br/>
& perhaps more generally also<br/>
<br/>
<br/>
<br/>
in the same place<br/>
there is a hint that the high water mark & not the low water mark of the<br/>
coastline is officially recognized by australia as the limit of the<br/>
continent<br/>
  & thus possibly also as the boundary of the states & territories<br/>
so i may have to revise slightly to that effect the 12 new tripoint<br/>
positions guessed at the low tide line yesterday<br/>
<br/>
<br/>
& a possible further complication encountered there<br/>
but probably irrelevant to any tripoint positions<br/>
is the fact that the australian antarctic territory & coral sea islands<br/>
territory do officially include adjacent waters<br/>
presumably distinguishing them from all the other territories & states<br/>
for which no maritime areas are officially indicated there<br/>
<br/>
still another new clue from the same source is the good word that australia<br/>
does officially have crown territories<br/>
including all lighthouses & some maritime preserves etc<br/>
apparently much like canada<br/>
<br/>
<br/>
so these several revelations send me back with a bit more confidence to<br/>
brendans map in message 1000<br/>
<a rel="nofollow" target="_blank" href="http://www.egroups.com/message/boundarypoint/1000">http://www.egroups.com/message/boundarypoint/1000</a><br/>
where the maritime boundary shown between jervis bay & nsw might now turn<br/>
out to be any of at least the following 3 or 4 things<br/>
<br/>
a cartographic mistake<br/>
  highly unlikely<br/>
<br/>
or australias only interfederative maritime boundary<br/>
  unlikely but possible<br/>
<br/>
or an island allocation line like the one in bass strait<br/>
rather than a true boundary<br/>
  much more likely<br/>
<br/>
or<br/>
possibly in combination with the previous item<br/>
an attempt to define the full extent of the port authority of canberra<br/>
upon which the whole jervis bay territory idea was originally predicated<br/>
  perhaps most likely of all<br/>
<br/>
<br/>
<br/>
o<br/>
o<br/>
o<br/>
oh no<br/>
i just noticed<br/>
the best clue of all is the words<br/>
  territory boundary  follows coastline<br/>
in 3 places on brendans map<br/>
<br/>
so could it be<br/>
australia is just an inconsistent country<br/>
showing one thing & saying another on the same official map<br/>
<br/>
i doubt that<br/>
<br/>
<br/>
but whatever the truth of this matter<br/>
it does seem likely that jervis bay & nsw share at least 4 crown waters<br/>
tripoints<br/>
namely at both ends of both land boundaries shown on that map<br/>
<br/>
& nsw thus weighs in on no fewer than 8 of the 16 ozzy tripoints<br/>
<br/>
m</div>