<p>I have my views and you have yours, so I ask a question, what was the average sea level in Athens, Greece 2,720 years ago? What was the average sea level in ancient Rome 2,420 years ago? <a href="https://en.wikipedia.org/wiki/History_of_theatre" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/History_of_theatre</a></p>

<p>Ancient towns have been found that were built thousands of years ago when the towns were above sea level. My bet is the average sea level was at its lowers 2,720 years ago when most of the planet was covered in ice. The sea will continue to rise until the ice caps melt.</p>

<p>Will New York be under water then? When the caps/glaciers melt, what will the average world sea level be considering the volume of the known ice caps/glacier smelt?</p>

<p>At the rising rate of the seas, when will New York, Miami, and other coastal lined cities be underwater---- Anyone care to calculate the year when NY will be completely submerged?
<a href="https://www.nationalgeographic.com/news/2010/3/100304-snowball-earth-ice-global-warming/" rel="nofollow noreferrer">https://www.nationalgeographic.com/news/2010/3/100304-snowball-earth-ice-global-warming/</a></p>

CC BY-SA 4.0
2020-06-07T17:36:59.040Z
Where I live the 100 year flood lines are published on the internet for insurance purposes. Can the sea level be determined when the ice caps/glaciers melt?
farsideofourmoon
CC BY-SA 4.0
2020-06-07T17:47:23.493Z
Hi. Unfortunately, some of your assumptions are wrong. "most of the planet" was most decidedly NOT covered in ice a mere 2720 years ago; you have to go back another 7000 years or so, and even then the ice cover was less than half of the planet's surface.
Spencer
CC BY-SA 4.0
2020-06-07T17:52:12.780Z
If you approach the question correctly, it's an interesting question to ask, but it's not a simple matter of calculating how far the bathtub will fill if you put more water it -- there are other factors such as thermal expansion, isostasy, and even plate tectonics to consider.
Spencer
CC BY-SA 4.0
2020-06-07T17:53:22.247Z
There's also no guarantee, even given anthropogenic climate change, that ALL of the polar ice will melt.
Spencer
CC BY-SA 4.0
2020-06-07T18:24:57.367Z
Are you saying NY will be under water or not?
farsideofourmoon
CC BY-SA 4.0
2020-06-07T18:25:34.360Z
https://www.nationalgeographic.com/news/2010/3/100304-snowball-earth-ice-global-warming/
farsideofourmoon
<oceanography><sea-level>
What will the sea level be when the ice caps/glaciers melt?
farsideofourmoon
# What will the sea level be when the ice caps/glaciers melt?

(Asked by: username_0 on 2020-06-07)

I have my views and you have yours, so I ask a question, what was the average sea level in Athens, Greece 2,720 years ago? What was the average sea level in ancient Rome 2,420 years ago? <https://en.wikipedia.org/wiki/History_of_theatre>

Ancient towns have been found that were built thousands of years ago when the towns were above sea level. My bet is the average sea level was at its lowers 2,720 years ago when most of the planet was covered in ice. The sea will continue to rise until the ice caps melt.

Will New York be under water then? When the caps/glaciers melt, what will the average world sea level be considering the volume of the known ice caps/glacier smelt?

At the rising rate of the seas, when will New York, Miami, and other coastal lined cities be underwater---- Anyone care to calculate the year when NY will be completely submerged?
<https://www.nationalgeographic.com/news/2010/3/100304-snowball-earth-ice-global-warming/>

**Tags:** oceanography, sea-level

> **Comments:**
> **username_0**: Where I live the 100 year flood lines are published on the internet for insurance purposes. Can the sea level be determined when the ice caps/glaciers melt?  
> **username_1**: Hi. Unfortunately, some of your assumptions are wrong. "most of the planet" was most decidedly NOT covered in ice a mere 2720 years ago; you have to go back another 7000 years or so, and even then the ice cover was less than half of the planet's surface.  
> **username_1**: If you approach the question correctly, it's an interesting question to ask, but it's not a simple matter of calculating how far the bathtub will fill if you put more water it -- there are other factors such as thermal expansion, isostasy, and even plate tectonics to consider.  
> **username_1**: There's also no guarantee, even given anthropogenic climate change, that ALL of the polar ice will melt.  
> **username_0**: Are you saying NY will be under water or not?  
> **username_0**: https://www.nationalgeographic.com/news/2010/3/100304-snowball-earth-ice-global-warming/  

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## 0 answers

