To see what an x-metre sea drop looks like - https://what-if.xkcd.com/53/
Global Sea Level Rise Map
11–20 of 33 posts
Re: Global Sea Level Rise Map
#12Earlier quoted context omitted.
Well, at least part of the Netherlands (approx. 26%) are already below sea level. And it doesn't look that bad.
Netherlands is protected by dams. The solid geology of the area has allowed for durable dams to be constructed over centuries. Places like Florida are going to be severely hit by rising sea levels because so much of the land is porous. You can't build a dam to stop the sea if it seeps in from underground.
Just out of interest, how tall are the dams?
Re: Global Sea Level Rise Map
#13To see what an x-metre sea drop looks like - https://what-if.xkcd.com/53/
There used to be a place called Doggerland in Europe: https://en.wikipedia.org/wiki/Doggerland
Re: Global Sea Level Rise Map
#14This map is not accurate. I tested by looking at the Maldives, of which the highest point is only 2.4m above the sea level but even at 7m, the map indicates that some islands would be above the surface.
Re: Global Sea Level Rise Map
#15Are there any predictions for the next X-years of how high the seas might rise?
The currently quoted number in policy papers is around 1 meter in the next 100 years. The includes the assumption that sea level rise is accelerating beyond historical trends.
For fun, you can get sea level rise satellite data for the past 20+ years from http://sealevel.colorado.edu and run your own math. If you just naively run forward the observed rate over the last 22 years, you get 1 meter of rise in 300 years.
You can also see historical tide data for cities here http://tidesandcurrents.noaa.gov/sltrends/sltrends_station.s...
It's important to know that tide data combines sea level information with information on how much the city is sinking. A bedrock city like NYC will give you better data on sea level rise than a city built on mud, like Venice, which is going into the water even if global sea levels were falling instead of rising.
Re: Global Sea Level Rise Map
#16Earlier quoted context omitted.
Netherlands is protected by dams. The solid geology of the area has allowed for durable dams to be constructed over centuries. Places like Florida are going to be severely hit by rising sea levels because so much of the land is porous. You can't build a dam to stop the sea if it seeps in from underground.
Just out of interest, how tall are the dams?
The dams in the famous Zuiderzee Works [1] are about 13m high, it seems.
Re: Global Sea Level Rise Map
#17I want this but more detailed and for sea level drops. I think due to rising water levels there is a massive amount of underwater archeological finds that havent been properly found simply due to a misunderstanding of where coastlines used to be at in the ancient past.
Re: Global Sea Level Rise Map
#18Doesn't look good for the Netherlands...
Well, given that it predicts half of the Netherlands will be flooded with just a 1m rise in sea level, which happens about twice a day, I'm a bit sceptical.
Re: Global Sea Level Rise Map
#19This map is not accurate. I tested by looking at the Maldives, of which the highest point is only 2.4m above the sea level but even at 7m, the map indicates that some islands would be above the surface.
Sea rise is not distributed equally around the globe though.
https://en.wikipedia.org/wiki/Tidal_range
I happen to have visited both extremes (Caribbeans and the Bay of Fundy).
Re: Global Sea Level Rise Map
#20I want this but more detailed and for sea level drops. I think due to rising water levels there is a massive amount of underwater archeological finds that havent been properly found simply due to a misunderstanding of where coastlines used to be at in the ancient past.
Relevant: https://what-if.xkcd.com/53/