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ocean saltiness

  • 04-04-2008 11:06am
    #1
    Crumble Froo
    Registered Users, Registered Users 2 Posts: 8,196 ✭✭✭


    just got into a bit of a drunken debate... with a sober person, but anyway... i mentioned that i thought the ocean water in the pacific off new zealand was a lot saltier than the atlantic back in donegal. friend said that was bull... all ocean water has to be equally salty... i said waht about dead sea, he said it's enclosed, so that's fair enough... tried to find answers online... google...

    few articles mentioned ocean density varying,w hich i assume backs my point, but i wondered if anyone could confirm if for me possibly, or prove me wrong? now, im just plain curious.


Comments

  • #2
    2Scoops
    Registered Users, Registered Users 2 Posts: 1,845 ✭✭✭2Scoops


    Science forum, tbh.

    I can confirm that there is no way that all the world's oceans are equally salty. There are regional differences - just not sure how substantial they are.


  • #3
    Einstein
    Registered Users, Registered Users 2 Posts: 2,630 ✭✭✭Einstein


    definitly not equally salty!
    was in the red sea couple seeks ago and much saltier then irish sea.


    mmmmm....salt....


  • #4
    Crumble Froo
    Registered Users, Registered Users 2 Posts: 8,196 ✭✭✭Crumble Froo


    ha, sorry, biology made most sense for a reason im not entirely sure of this morning, but yeah, i didnt think it entirely likely that it'd be equally salty... the little research i did showed that the density also depends on the temperature, and the less dense bits tend to be at the top or something. thanks for the answers though.


  • #5
    Kevster
    Closed Accounts Posts: 2,980 ✭✭✭Kevster


    It's already been said but - yes - they are definately NOT equally salty.


  • #6
    plonk
    Closed Accounts Posts: 1,352 ✭✭✭plonk


    Ill give you three links that should answer your question


    http://en.wikipedia.org/wiki/Salinity

    http://en.wikipedia.org/wiki/Seawater

    http://en.wikipedia.org/wiki/Thermohaline_circulation

    and btw all seawater is about the same( well between 3.1% and 3.8%) only where freshwater meets seawater and seas which are virtually cut off (i.e mediterranean) does it differ greatly


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  • #7
    UrbanFox
    Registered Users, Registered Users 2 Posts: 474 ✭✭UrbanFox


    Also, look up PLIMSOLL LINE.

    This is the set of lines marked on the side of the hull of a ship to indicate the safe load line. There are different marks on the Plimsoll Line to take account of varying salinity levels in different waters so the merchant navy seems to agree with your view !

    See http://en.wikipedia.org/wiki/Plimsoll_line#Load_line which includes a graphic to illustrate the principle.


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