Relationship Between Water Displacement and Sea Levels. Watch

Farchitect
Badges: 10
Rep:
?
#1
Report Thread starter 2 years ago
#1
Hi All,

I am working on a research project involving damming and draining the whole of the North Sea. I want to know approximately what affect this would have on global average sea levels. But I can't work out how to go about calculating this.

The total volume of water in the North Sea is 54,000 cubic kilometers. The total volume of saliant water on Earth is around 1.35 billion cubic kilometers.

If anyone can help or give me any pointers that would be much appreciated.

Regards
Farchitect
0
reply
Joinedup
Badges: 20
Rep:
?
#2
Report 2 years ago
#2
(Original post by Farchitect)
Hi All,

I am working on a research project involving damming and draining the whole of the North Sea. I want to know approximately what affect this would have on global average sea levels. But I can't work out how to go about calculating this.

The total volume of water in the North Sea is 54,000 cubic kilometers. The total volume of saliant water on Earth is around 1.35 billion cubic kilometers.

If anyone can help or give me any pointers that would be much appreciated.

Regards
Farchitect
It's a fairly well known factoid that 70% of the earths surface is ocean so for an approximate answer you could calculate the total surface area of the earth and see how thick a layer containing 54000 cubic km would be if it was spread over 70% of that area.
0
reply
Farchitect
Badges: 10
Rep:
?
#3
Report Thread starter 2 years ago
#3
(Original post by Joinedup)
It's a fairly well known factoid that 70% of the earths surface is ocean so for an approximate answer you could calculate the total surface area of the earth and see how thick a layer containing 54000 cubic km would be if it was spread over 70% of that area.
Well yeah, but how do I do that? Ha
0
reply
Joinedup
Badges: 20
Rep:
?
#4
Report 2 years ago
#4
Surface area of a sphere = 4πr2

radius of earth ~ 6371 km
0
reply
Farchitect
Badges: 10
Rep:
?
#5
Report Thread starter 2 years ago
#5
Okay so I think I've got it.

Volume of Water / Area of the rest of the world's ocean = Height of increase in sea level

therefore:

54,000,000,000,000m3 / 361,330,000,000,000,000m2 = ~8.97m

This seems too high though?
0
reply
Joinedup
Badges: 20
Rep:
?
#6
Report 2 years ago
#6
(Original post by Farchitect)
Okay so I think I've got it.

Volume of Water / Area of the rest of the world's ocean = Height of increase in sea level

therefore:

54,000,000,000,000m3 / 361,330,000,000,000,000m2 = ~8.97m

This seems too high though?
yeah I'd check that calculation - dividing by a larger number should give you a small answer.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts

All the exam results help you need

810

people online now

225,530

students helped last year

University open days

  • University of Dundee
    Undergraduate Open Day Undergraduate
    Mon, 26 Aug '19
  • University of Aberdeen
    General Open Day Undergraduate
    Tue, 27 Aug '19
  • Norwich University of the Arts
    Postgraduate (MA) Open Day Postgraduate
    Sat, 31 Aug '19

How are you feeling about GCSE Results Day?

Hopeful (215)
12.49%
Excited (157)
9.12%
Worried (306)
17.77%
Terrified (382)
22.18%
Meh (173)
10.05%
Confused (37)
2.15%
Putting on a brave face (238)
13.82%
Impatient (214)
12.43%

Watched Threads

View All