Subject: world class border arc census was Re: real bjneng try afoot
Date: Aug 05, 2004 @ 15:30
Author: aletheiak ("aletheiak" <aletheiak@...>)
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> I think it's just a matter of practicality. Thehttp://home.worldonline.dk/jesniel/border/african_tripoints.htm#d
> circles are used only in regards to specific tangent
> lines. It is easier to do this since the circles are
> centered in the "centers" of villages. It is easier
> to talk about that than to try and describe a point in
> the middle of nowhere that may be where the tangent
> line touches the radius and a turnpoint may be.
>
> --- aletheiak <aletheiak@y...> wrote:
>
> > right
> > & all as previously noticed & noted
> > but still no clear explanation of why the arcs or
> > circumferences
> > which the border doesnt follow are even mentioned in
> > the
> > alignments at all
> >
> > why such gratuitous geometrical figurations for
> > reference only
> > when it would have been far easier to make reference
> > to some
> > physical object &or straight line distance
> > as they do everywhere else
> >
> > & we have just been calling arcs what they call
> > circumferences
> > so there are not really 2 different things needing
> > distinction here
> >
> >
> > so unless i have misunderstood
> > you are simply restating the enigmatic texts
> > but not really resolving their mysteries
> >
> >
> > not that they absolutely need to be resolved tho
> >
> > the writers could have been just as confused as they
> > seem to us
> >
> > & perhaps the only way to fully resolve the
> > confusion would be to
> > match all the marker positions with all the
> > alignments
> > & then see if we have anything left over
> > hahahahaha
> > but i am not suggesting we drive ourselves so crazy
> > as that
> >
> > --- In BoundaryPoint@yahoogroups.com, Michael
> > Kaufman
> > <mikekaufman79@y...> wrote:
> > > 36. No since the border only runs on a tangent to
> > the
> > > circumference and then again a straight line in
> > 37.
> > > It never runs along the circumference and there is
> > no
> > > arc. The Grand Bete circle is used for reference
> > to
> > > specify the turnpoint, and the border does not run
> > > along this circle.
> > >
> > > 49. It just runs along the line that is tangent to
> > the
> > > Lusi 3.5 km circle, but again does not ride an arc
> > of
> > > the circle.
> > >
> > > 54. Just following the tangent from one circle to
> > > another. AKA straight line segment between two
> > arcs
> > > (53 and 55).
> > >
> > > 58. Just follows tangent from Kankali circle to
> > > Gusin-Sura circle without riding an arc of
> > Gusin-Sura.
> > >
> > > 59. It follows the tangent from Gusin-Sura circle
> > to
> > > Daku circle from point of intersection with the
> > > tangent in 58 to the circumference of the Daku
> > circle
> > > (an arc of which it rides in 60).
> > >
> > > The 5 paragraphs are describing straight line
> > > segments. The three extra circles only serve as
> > > references from which to draw straight lines. So
> > we
> > > are still at 10 arcs: Under Alignment section -
> > 26,
> > > 33, 35, 42, 44, 47, 53, 55, 57, 60.
> > >
> > > --- aletheiak <aletheiak@y...> wrote:
> > >
> > > > as mentioned
> > > > i couldnt be sure
> > > > & on closer examination i still cant
> > > > because the text occasionally varies its
> > formulaic
> > > > description of
> > > > the arcs from one example to the next
> > > > & evidently incorporates several geometric
> > > > conundrums as well
> > > >
> > > > what i can see is
> > > > there are in all 13 different arcs mentioned
> > > > in a total of 15 different numbered paragraphs
> > > > including your mentioned 10 paragraphs plus 36
> > 49 54
> > > > 58 & 59
> > > >
> > > > which may or may not add to your count of 10
> > border
> > > > arcs
> > > >
> > > > i agree there could be as few as 10 arcs that
> > the
> > > > bjng border
> > > > actually follows
> > > >
> > > > but in any case
> > > > i dont see why they would even have been
> > mentioned
> > > > if the
> > > > border isnt supposed to follow them
> > > >
> > > > can you perhaps positively dispose of any or all
> > 3
> > > > odd men out
> > > > from the mentioned 13
> > > >
> > > > just to keep track
> > > > we have in sequence the following 13 villages as
> > > > centers
> > > > with radii in km
> > > >
> > > > okuta 8 & a half
> > > > guri 4
> > > > yashikira 8
> > > > grand bete 4
> > > > kenumbe 4
> > > > besi 8
> > > > gauzhi 3 & a half
> > > > lusi 3 & a half
> > > > naganzi 4
> > > > kade 4
> > > > kankali 5
> > > > gusin sura 4
> > > > daku 5
> > > >
> > > >
> > > >
> > > > & about your map
> > > > i dont know what the mapmaker was doing or
> > showing
> > > > there
> > > >
> > > > perhaps a temporary question or situation during
> > > > wwii
> > > >
> > > > i think modern dztn is the dash & dot line
> > > > not the black dash dash line
> > > >
> > > > & of course the other convergents
> > > > lytn & dzly
> > > > are shown by the crosses
> > > >
> > > > & i cant account for any of the other lines
> > > > but assume they are irrelevant to finding the
> > > > tripoint
> > > >
> > > > the only presently outstanding question i am
> > aware
> > > > of in this
> > > > vicinity is probably too small to be shown on
> > this
> > > > map
> > > > namely whether dztn meets the arc at its
> > northeast
> > > > terminal
> > > > or subdivides the arc 2km counterclockwise from
> > > > there
> > > >
> > >
> >
>
> > > > zlytnhttp://www.law.fsu.edu/library/collection/LimitsinSeas/maps/bs1
> > > >
> > > > so as i understand it
> > > > only 2 possible tripoint positions are on this
> > arc
> > > >
> > > > --- In BoundaryPoint@yahoogroups.com, Michael
> > > > Kaufman
> > > > <mikekaufman79@y...> wrote:
> > > > > BJNG - Ok by my count I get 10:
> > > > >
> > > > > Under Alignment section - 26, 33, 35, 42, 44,
> > 47,
> > > > 53,
> > > > > 55, 57, 60
> > > > > Which are the other one or two?
> > > > >
> > > > > Also: On
> > http://www.manntaylor.com/FtSaintM.jpg -
> > > > The
> > > > > solid green arrow almost points right to
> > DZLYTN.
> > > > What
> > > > > boundary is the hollow green arrow pointing
> > to?
> > > > > Currently this must be all in DZ. And the
> > line
> > > > from
> > > > > the south - what is this? It would divide
> > > > territory
> > > > > which is currently all in Libya. How many TPs
> > > > > (including ghost points) can be on this one
> > arc?
> > > > >
> > > > >
> > > > > --- aletheiak <aletheiak@y...> wrote:
> > > > > > please look for several insertions
> > > > > >
> > > > > > --- In BoundaryPoint@yahoogroups.com,
> > Michael
> > > > > > Kaufman
> > > > > > <mikekaufman79@y...> wrote:
> > > > > > > 1. DZLYTN
> > > > http://www.manntaylor.com/FtSaintM.jpg
> > > > > > > (this could be DZLY and LYTN or just DZLY
> > as
> > > > per
> > > > > > msg.
> > > > > > > 13465)
> > > > > >
> > > > > > correct & we still dont know which is true
> > > > > > so you are right to keep counting it or them
> > as
> > > > > > either 1 or 2
> > > > > > borders
> > > > > > but this is apparently only a single sweep
> > of
> > > > arc in
> > > > > > any case
> > > > > >
> > > > > > > 2. DZLY
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> > > > > > b.phphttp://www.law.fsu.edu/library/collection/LimitsinSeas/maps/bs2.
> > > > > > > 3. LYNE
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> > > > > > phphttp://www.law.fsu.edu/library/collection/LimitsinSeas/IBS091.pdf
> > > > > > > 4.-15. BJNG (12 of these?)
> > > > > >
> > > > > > i still cant be sure
> > > > > > but the following text seems to indicate
> > either
> > > > 11
> > > > > > or 12
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> > > > > > > 16. NENGhttp://www.law.fsu.edu/library/collection/LimitsinSeas/IBS093.pdf
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> > > > > > > (but not evident)
> > > > > >
> > > > > > it is evident in the above text
> > > > > > but i think we just havent yet found a good
> > > > enough
> > > > > > map
> > > > > >
> > > > > > > 17.-??? MXUS (msg. 13937; how many are
> > > > there?)
> > > > > >
> > > > > > unknown
> > > > > > but i believe only 1 has been reported so
> > far
> > > > > > & suspect the 1970 mxus treaty will reveal
> > all
> > > > > > if there are any others
> > > > > >
> > > > > > > SO,
> > > > > > > We can't put a firm number on it. Depends
> > on
> > > > 3
> > > > > > > variables:
> > > > > > > 1. Where DZLYTN falls. If there is a
> > short
> > > > LYTN
> > > > > > we
> > > > > > > have 18 not 17.
> > > > > > > 2. Also, do we know 12 for BJNG? So it
> > would
> > > > be
> > > > > > more
> > > > > > > or less if not exactly 12.
> > > > > > > 3. And how many more arcs for MXUS on the
> > > > > > channelized
> > > > > > > Rio Grande?
> > > > > > > I am not yet counting ITVA since I think
> > here
> > > > we
> > > > > > would
> > > > > > > be talking about features (not figures)
> > which
> > > > can
> > > > > > not
> > > > > > > be perfectly geometrically true arcs.
> > > > > >
> > > > > > true
> > > > > > & other reasons not to count any of the itva
> > > > curves
> > > > > > are
> > > > > > that they are elliptical rather than
> > circular
> > > > > > & that their total number is so highly
> > debatable
> > > > > > amounting to either 1 or 3 or 5 or even more
> > > > > > depending on point of view
> > > > > >
> > > > > > what a mess
> > > > > > & good idea to sidestep it
> > > > > > on any grounds
> > > > > >
> > > > > >
> > > > > > so
> > > > > > we have
> > > > > > by this exact count
> > > > > > at least 16 international border arcs
> > > > > > but still perhaps as many as 18
> > > > > > or more
> > > > > > if more are found
> > > > > >
> > > > > > & they are evidently situated on 6 different
> > > > borders
> > > > > > & 1 tripoint
> > > > > >
> > > > > > thanx
> > > > > >
> > > > > >
> > > > > >
> > > > > > of course some wag will now come along to
> > remind
> > > > us
> > > > > > that all
> > > > > > small & great circle arc borders
> > > > > > including every single segment between
> > > > intervisible
> > > > > > markers
> > > > > > are technically border arcs too
> > > > > >
> > > > > > so we should add an extra zillion or 2
> > > > > >
> > > > > >
> > > > > > end insertions
> > > > > >
> > > > > > > --- aletheiak <aletheiak@y...> wrote:
> > > > > > > > arif
> > > > > > > > i too believed in this arc report about
> > > > > > easternmost
> > > > > > > > gmsn
> > > > > > > > & may even have been responsible for
> > > > starting
> > > > > > the
> > > > > > > > rumor about it
> > > > > > > > but i have been unable to substantiate
> > it
> > > > > > > >
> > > > > > > > this border is set at a fixed distance
> > from
> > > > the
> > > > > > > > river on both sides
> > > > > > > > presumably from both its banks rather
> > than
> > > > from
> > > > > > its
> > > > > > > > thalweg
> > > > > > > > just like the manh state line is offset
> > from
> > > > the
> > > > > > > > merrimack
> > > > > > > > except doubly so
> > > > > > > > as you probably also realized
> > > > > > > > & can see here
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://www.lib.utexas.edu/maps/africa/gambia_pol88.jpg
> > > > > > > >
> > > > > > > > however
> > > > > > > > as beguilingly arclike as all this may
> > seem
> > > > > > > > such a regime would not actually
> > presuppose
> > > > any
> > > > > > true
> > > > > > > > arcs at all
> > > > > > > >
> > > > > > > > except
> > > > > > > > i would agree
> > > > > > > > conceivably a single one centered at the
> > > > > > headspring
> > > > > > > >
> > > > > > > >
> > > > > > > > however
> > > > > > > > the source of the gambia river is not in
> > > > gambia
> > > > > > > > but in senegal
> > > > > > > > as you can also see in the above map
> > > > > > > > & therefore the simple offset regime
> > couldnt
> > > > > > project
> > > > > > > > such a
> > > > > > > > simple terminal arc sector
> > > > > > > >
> > > > > > > > only by varying the apparent regime &
> > > > reducing
> > > > > > it to
> > > > > > > > a single
> > > > > > > > offset center point in the middle of the
> > > > river
> > > > > > > > could such a final true arc have been
> > > > produced
> > > > > > > >
> > > > > > > >
> > > > > > > > also the map doesnt show any such
> > terminal
> > > > > > rounding
> > > > > > > > or bulge
> > > > > > > > as one would expect in such a case
> > > > > > > > but quite the contrary
> > > > > > > > something more like a foreshortening or
> > > > > > truncation
> > > > > > > > of the basic regime
> > > > > > > > & indeed it makes the cutoff point look
> > > > quite
> > > > > > > > arbitrary & artificial
> > > > > > > > & somehow distinctly at odds with the
> > basic
> > > > > > offset
> > > > > > > > regime
> > > > > > > >
> > > > > > > >
> > > > > > > > so at this point i think the existence
> > of an
> > > > arc
> > > > > > on
> > > > > > > > gmsn hasnt
> > > > > > > > been & probably wont be demonstrated
> > > > > > > > & was just a wishful thought &
> > misconception
> > > > in
> > > > > > the
> > > > > > > > first place
> > > > > > > >
> > > > > > > >
> > > > > > > > mind you
> > > > > > > > i dont actually know how the gmsn border
> > > > does
> > > > > > > > accomplish this
> > > > > > > > remarkable turnabout at its east end if
> > not
> > > > in
> > > > > > some
> > > > > > > > approximation of an arc or arcs
> > > > > > > >
> > > > > > > > & i can still imagine how it might
> > somehow
> > > > > > involve a
> > > > > > > > true arc or 2
> > > > > > > > based at some known terminal cross
> > section
> > > > of
> > > > > > the
> > > > > > > > river
> > > > > > > >
> > > > > > > > but i dont believe there is any text
> > that
> > > > > > specifies
> > > > > > > > to this effect
> > > > > > > > nor any map that suggests it
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > meanwhile
> > > > > > > > i have scoured the ghost frgb lines of
> > the
> > > > > > period
> > > > > > > > & have discovered nothing new
> > > > > > > > so our world class border arc census is
> > > > again
> > > > > > > > stalled
> > > > > > > > at a top count of about 20 now & perhaps
> > > > forever
> > > > > > > >
> > > > > > > > --- In BoundaryPoint@yahoogroups.com,
> > Arif
> > > > Samad
> > > > > >
> > > > > > > > <fHoiberg@y...> wrote:
> > > > > > > > > Not sure, but isn't there some (at
> > least
> > > > one
> > > > > > arc)
> > > > > > > > in
> > > > > > > > > the border of Senegal and Gambia. As
> > far
> > > > as I
> > > > > > > > > thought, the Easternmost point is
> > directly
> > > > > > east of
> > > > > > > > the
> > > > > > > > > Center of the arc in that border.
> > > > > > > > > Arif
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
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