It's interesting that demarcation actually changes the border.
I guess the same will happen to eg Egypt-Libya in due time.
What does the caus treaty say in any case?
Jesper
----- Original Message -----
From: "michael donner" <m@...>
To: <BoundaryPoint@yahoogroups.com>
Sent: Friday, May 04, 2001 2:19 AM
Subject: Re: [BoundaryPoint] caus straight or irregular
> http://www.geocan.nrcan.gc.ca/ibc/coordinates/SECT-M-83.txt
> offers a fully illuminated & enjoyable ride west to east
> from which i was able to extrapolate the following data
> showing that there are only 2 concentrated areas of disturbance
> where all the significant lurches occur
> namely from monument 43 to 65 & from 478 to 480
> but the single greatest lurch occurs between monuments 49 & 50
> in the cascades
> to see which ask topozone for bearpaw mountain
> but i can tell you it will still be imperceptible
> where the latlong ratio or deviation from due east reaches about 1 second
> of yaw per minute of run
> equating to several degrees of compass arc
>
>
> monument sequence tendency gradient extremity of lat
>
> 0>2b 35>37 northward gradual 49d 00m 08s 8t nmost
> 35>37 38>43 southward gradual 08 7
> 43 50 south steep 48 59 50 3 smost
> 50 52 minuscule none ditto
> 52 62 north steep 59 8
> 62 63 minuscule none ditto
> 63 65 north steep 49 00 03 3
> 65 347 mixed s&n gradual 48 59 48 0 new s
> 347 478 mixed s&n gradual
> 478 480 north steep
> 480 912>tpbb mixed s&n gradual
>
> the northernmost point appears also to be among the westernmost
> specifically somewhere still unknown in western point roberts
> 891 feet 4 inches too far north of the true 49th parallel
>
> & the southernmost is at monument 347 between sweetgrass & whitlash montana
> 1215 feet 5 & a half inches too far south
>
> more coming in next message
>
> m
>
> >
> >
> >The CA-US border (Lake of the Woods to Point Robers) consists of a number
> >of "straight" segments between boundary markers, it is sometimes as far as
> >1/4 mile north or south of the 49th parallel.
> >
> >I put "straight" in quotes because of the issue of what constitutes a
> >straight line on the earth's surface. The usual definition of the
> >equivalent of a straight line is a great circle. But great circles other
> >than meridians and the equator have costantly changing bearings (compass
> >directions). Lines of constant compass bearing, known as loxodromes, are
> >not shortest paths unless they run north-south or are along the equator.
> >
> >David
> >
> >On Thu, 3 May 2001, michael donner wrote:
> >
> >> actually brian has filed the ultimate dissertation on this topic
> >> but it would take a search or a chase goose to get us back to it
> >>
> >> i think one basic point of his tho was that the lines between each pair of
> >> monuments are unique great circles
> >> & thus actually none of them ever aligns perfectly with any other
> >>
> >> & this is apart from the slight local irregularities that necessarily occur
> >> everywhere a monument is placed
> >>
> >> whether there are more egregious zigzags or offsets than these i dont know
> >>
> >> m
> >>
> >>
> >> >
> >> >Interesting about Iraq-Jordan.
> >> >
> >> >My newest atlas show a straight line, but expedia.com shows a zig zag.
> >> >
> >> >Is the caus border between Point Roberts and Lake Wood 100% straight, or
> >> >are the local irregularities?
> >> >
> >> >Jesper
> >> >----- Original Message -----
> >> >From: "michael donner" <m@...>
> >> >To: <BoundaryPoint@yahoogroups.com>
> >> >Sent: Thursday, May 03, 2001 12:38 AM
> >> >Subject: Re: [BoundaryPoint] Re: Fiat boundaries
> >> >
> >> >
> >> >> peter mentioned
> >> >>
> >> >> >
> >> >> >--- In BoundaryPoint@y..., michael donner <m@d...> wrote:
> >> >> >> & jesper
> >> >> >> of these 5 or 3 singular fiat boundaries we have found
> >> >> >> your chad nigeria line is probably the truest & purest in the world
> >> >> >> by virtue of being totally wet as well as probably unmarked
> >> >> >> & therefore almost certainly absolutely undeflected by so much as a
> >> >> >single
> >> >> >> subatomic particle
> >> >> >>
> >> >> >> m
> >> >> >
> >> >> >Not deflected, but Lake Chad being a very salty one with fluctuating
> >> >> >amounts of water (+salt) in it, there are possibly (also fluctuating)
> >> >> >amounts of land that are cut by the boundary.
> >> >>
> >> >> actually it is now a completely dry line
> >> >> as recent photos clearly show in
> >> >> <<http://www.afrol.com/Categories/Environment/env062_lake_chad.htm>
> >>http://www.afrol.com/Categories/Environment/env062_lake_chad.htm>
> >> >><http://www.afrol.com/Categories/Environment/env062_lake_chad.htm>
> >>http://www.afrol.com/Categories/Environment/env062_lake_chad.htm
> >> >> if you can mentally supply where the border is
> >> >>
> >> >> still being legal but indefinite it remains the most pristine of
> >>all the
> >> >> singular fiats
> >> >>
> >> >>
> >> >> btw i also just noticed that the iraq jordan boundary
> >> >> 1 of the 2 other best claimants of singular fiathood
> >> >> has recently lapsed into a rather messy de facto zigzag
> >> >> vaguely suggestive of the egypt sudan administrative line
> >> >>
> >> >> so it may well have bitten the dust for any playful purposes
> >> >> & we could now be looking at a world class set with only 2 members
> >> >> both dry
> >> >> one marked
> >> >>
> >> >> >>
> >> >> >> still cresting on my brendan waves
> >> >> >> & so wishing for the perfect moment point of happy landing
> >> >> >>
> >> >> >
> >> >> >Yes I know what you mean. The viscosity of these waves is huge, I
> >> >> >think. What substance is this? No salt water...
> >> >>
> >> >> i think it must be aurora australis concentrate
> >> >>
> >> >> responds shimmeringly to your every thought
> >> >>
> >> >> still dancing across the empyrian on it here too
> >> >>
> >> >> excelsior
> >> >> m
> >> >>
> >> >>
> >> >>
> >> >>
> >> >>
> >> >>
> >> >>
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