That rises a few questions:
1) Is the CA-US border (Lake of the Woods to Point Roberts) the 49th parallel and the markers wrong? Do the local know the actual border?
2) Are the markers right? When and why did they change from the 49th parallel? How long is the longest regular stretch?
A similar question came up when I studied Peter Herings new dedk pictures on
http://www.geocities.com/mafiapetedk. http://geocities.com/mafiapetedk/borderdedk3b.html show marker 245 in the road and 246 just behind/right of the the tall metal post. If I follow the line from 245 I do not hit 246, which means
1) I am optical deceived (Which I doubt as 245 is almost level with the ground)
2) The marker lines are wrong
3) There is a bend between the markers.
Jesper
----- Original Message -----
From: "David Mark" <dmark@...>
To: <BoundaryPoint@yahoogroups.com>
Sent: Thursday, May 03, 2001 7:37 PM
Subject: Re: [BoundaryPoint] caus straight or irregular
>
> 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
> > >> 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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