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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