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Sea Level Rise in ArcGIS

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#1
Jason JB

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Hi All,

I am currently working on a project and would like to show 3 different cases of sea level change in a GIS and
have values of 0, 0.5 and 1 metres as the inundation levels. Does anyone know how I go about doing this in
ArcGIS.

Thanks in advance!

#2
frax

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I hope you have a really detailed elevation model, and that you are working on a very large-scale map - this won't really show anything interesting on a regional/continental/global scale, especially if the elevation model is not super-detailed.

What you have to do here is to do some Spatial Analyst processing, you want to classify elevations that are 0 + inudation level that are bordering sea classified as inundated (to avoid inland basins being inundated).
Hugo Ahlenius
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#3
ProMapper

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I hope you have a really detailed elevation model, and that you are working on a very large-scale map - this won't really show anything interesting on a regional/continental/global scale, especially if the elevation model is not super-detailed.

What you have to do here is to do some Spatial Analyst processing, you want to classify elevations that are 0 + inudation level that are bordering sea classified as inundated (to avoid inland basins being inundated).

Yes, I agree with you. It can be used only for very small areas. Here is an interesting Google map flood map where you can experiment by increasing the flooding. Just go over and see if 0.5 and 1m, make any indundation. Here is the link http://flood.firetre...22.4516,85.9570

Anu
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#4
BioGeoMan

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I created some regional maps similar to this for coastal NC at 1, 2, and 3 ft inundation levels. Be careful about this type of analysis since you are essentially showing the "bathtub" effect of sea level rise and not taking into account local geomorphologic and erosional processes which will alter the predicted bathtub model significantly in some places.

Thanks,
M.

Michael Scisco

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#5
Matthew Hampton

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One related, and interesting thought I had the other day – when the level of the oceans rise, all the mountains shrink! :rolleyes:

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#6
SteveR

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Peter Guth has been working with sea level changes in his program Microdem. Here's an example he's posted for Annapolis, Maryland:
http://www.usna.edu/...rodemoutput.htm




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