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Con-Cartography: Sea-Levels
Posted: Posted March 15th, 2008 by eldin raigmore
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Con-Cartography

I have some questions about sea-levels.

(1) Can anyone map what Earth's current landmasses and bodies of
water would look like if sea levels
(a) rose 1 metre?
(b) fell 1 metre?

(2) Can anyone map what Earth's current landmasses and bodies of
water would look like if sea levels
(a) rose 10 metres?
(b) fell 10 metres?

(3) Can anyone map what Earth's current landmasses and bodies of
water would look like if sea levels
(a) rose 100 metres?
(b) fell 100 metres?

(4) Can anyone map what Earth's current landmasses and bodies of
water would look like if sea levels
(a) rose 10 centimetres?
(b) fell 10 centimetres?

(5) Can anyone map what Earth's current landmasses and bodies of
water would look like if sea levels
(a) rose 1 kilometre?
(b) fell 1 kilometre?

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Not sure exactly how much 10 centimeters would really do. Maybe take out the Netherlands and Venice.

I'm not sure, but you might be able to put in an elevation image of the Earth into Fractal Terrains or some other map generator thing and play with water levels. I know that Terragen had a feature like that, but you had to buy the elevation images -- and they were pretty pricey IIRC. And of course Terragen isn't for whole planets, anyway.

Posted March 15th, 2008 by Fonori
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Fonori
 

Not sure exactly how much 10 centimeters would really do. Maybe take out the Netherlands and Venice.
I intended the 10cm and 1km to be extremes of "not much change" and "a whole lot more change than is likely to happen".

I'm not sure, but you might be able to put in an elevation image of the Earth into Fractal Terrains or some other map generator thing and play with water levels. I know that Terragen had a feature like that, but you had to buy the elevation images -- and they were pretty pricey IIRC. And of course Terragen isn't for whole planets, anyway.
Something like that occurred to me; though I didn't know specifics. Has anyone already done this? Does anyone know of anyone who's posted the results on-line?

Posted March 15th, 2008 by eldin raigmore
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BTW Siphonia shows the sea-levels dropped by 4 km. The idea, I take it, was to remove enough ocean to reverse the current ratio of land-area to sea-areal.

Posted March 15th, 2008 by chiarizio
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Al Gore's people have. They take a couple maps with sea levels rising to show a couple possibilities to each coastal city to demonstrate to them how much chaos they're in for.

Vancouver didn't change all that much, being very mountainous... I think mostly the beaches were lost, and small parts of the city and Richmond were flooded. I was underwhelmed.

Posted March 15th, 2008 by Blake
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Blake
 

Jefferson Wilson found the following two resources:
global warming "sea level" map
glaciation "sea level" map

Anthony Miles found the following two resources:

flood
Sebastien Merkel

Posted March 17th, 2008 by chiarizio
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There's also the possibility of the discovery of a kind of "cold fusion" catalyst (though such a molecular structure could probably exist, the discovery of it is generally considered improbable) to turn a large part of the ocean into helium and kick it out of the atmosphere.

One way to reduce the amount of water aside from a new ice-age.

Posted March 17th, 2008 by Blake
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Blake
 

rose 1 metre?

fell 1 metre?


rose 10 metres?

fell 10 metres?


rose 100 metres?

fell 100 metres?


rose 10 centimetres?
fell 10 centimetres?
-Can't do these; my resolution is 1 m.

rose 1 kilometre?

fell 1 kilometre?


-Rob

Posted March 17th, 2008 by HandsomeRob
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Wow, if sea level rises crazy high, Greenland's the place to be :P

Posted March 17th, 2008 by Fonori
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Fonori
 
Posted March 17th, 2008 by eldin raigmore
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Wow, if sea level rises crazy high, Greenland's the place to be :P


There or Tibet.

Posted March 18th, 2008 by bloodb4roses
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