Is the ocean broken?

Discussion in 'All Things Boats & Boating' started by daiquiri, Oct 24, 2013.

  1. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Here's another thought experiment.

    Let's say you have a steel ship which weighs exactly 100 tons.
    And let's also say that you have a cube of fresh water ice that weighs exactly 100 tons.
    You place them both in two dry docks of identical dimensions, and you completely fill the dry docks with fresh water.

    Now you let the ice cube melt, and you poke a hole in the steel ship such that it floods and sinks.

    Will the level of water in the two dry docks stay the same, lower, or overflow?
    (Assume that the water in ice cube dry dock will stay the same temperature, and therefore the same volume.)
     
  2. Yobarnacle
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    Yobarnacle Senior Member holding true course

    When I load a ship in a freshwater port, I can overload a calculated percent if I am offloading in a salt water port because the draft of the ship will be less in salt water and the overload will be a legal load.. I understand the point you are trying to make, However, the arctic and antarctic ices are not pristine ices. If you ever lived near the sea, you would be accustomed to rinsing the salt off your car before you drive it so you can see out the windshield. Salt is carried by wind in huge quantities and long distances. Also, the salt that leached away went nowhere, it awaits recombining with the water it came from. The seas have different salt content in different places..

    The fine for an overload is a thousand dollars an inch per day, so we calculate very carefully exactly the maximum we can carry.
     
  3. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

    Warmer climate means more water will be in the air. "It's not the heat; It's the humidity." is a common truism here in Florida.
    Don't believe me? Visit Big Cypress Seminole Reservation in August.
    What makes the water fall from the air? Cooling the air.
    You can't have warming without vaporizing water. It won't all be in the ocean.
    Silly and obstinate to assume it will all stay in and thereby raise the ocean to any catastrophic level.
     
  4. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    A bit of good news to start the New Year.

    'Happy corals': climate crisis sanctuary teeming with life found off east Africa
    • Off east Africa is a rare ocean refuge for coral where species are still thriving despite the climate crisis impacting other nearby reefs
    • It is located in a rare “ocean cool spot” that is protecting the corals and marine mammals from warmer seas
    • This part of the Indian Ocean has the greatest concentration of dolphins in east Africa
    • Fish species thought to have become extinct were found thriving in these cooler waters
    • Deep water channels provide thermal stability to marine ecosystems, shielding them from the worst of global warming
    The research is published in Advances in Marine Biology.
     
  5. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

  6. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

    That reef could end up under an adjacent plate.
     
  7. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

  8. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Future ocean conditions could cause significant changes in marine mussels
    • A study exposed blue mussels to current and future levels of ocean acidification and warming, as well as both together
    • Initial comparison showed that warming alone increased shell growth, but warming and acidification led to decreased shell growth
    • More detailed analysis showed warming alone made shells more brittle, but adding acidification reduced some of that brittleness
    • This is counter to what had been predicted
    • Previous studies suggested that sea snails would dissolve and reduce in size by a third
    • This study show that warming and acidification can have negative effects but those effects are not always predictable
    The study was published in Frontiers of Marine Science
     
  9. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    A Monster Wind Turbine Is Upending an Industry
    • A new series of giant offshore wind turbines is being planned by General Electric
    • At 853' high, 722' diameter, and 13 MW, one turbine is large enough to power 12,000 houses
    • In coming years customers are likely to demand even bigger turbines, until they reach a point where greater size no longer makes economic sense
    • G.E. has a deal to supply 276 turbines to what is becoming the world’s largest wind farm at Dogger Bank off Britain
    • The offshore turbine business is expected to grow faster in the coming years than land-based turbines

    [​IMG]
     
  10. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Climate Change Will Give Rise to More Cancers
    • High temperatures, poor air quality and wildfires cause higher rates of respiratory and cardiovascular diseases
    • Warmer temperatures and changing rainfall patterns raise the risk and spread of vector-borne disease, such as malaria and dengue
    • Extreme weather events cause death, injury, displacement, and disrupt health-care delivery
    • The biggest cancer threats will be from air pollution, exposure to ultraviolent radiation and industrial toxins, and disruptions in food and water supply
    • World Bank estimates that climate change will push 100 million people globally back into poverty by 2030
    • Poor people and communities of color are disproportionately affected by cancer
    The review appears in The Lancet Oncology.
     
  11. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

    Socialism is a cancer.
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Study: Warming already baked in will blow past climate goals
    • A study figures the CO2 already in the air will push global temperatures to about 2.3 degrees Celsius above pre-industrial times
    • This about 1 degree C above previous estimates
    • However, if we get to net zero carbon emissions soon, the 2 degrees of global warming could be delayed enough so that it won’t happen for centuries
    • “If we don’t, we’re going to blow through (climate goals) in a few decades,” Dessler said. “It’s really the rate of warming that makes climate change so terrible
    The study was published in the journal Nature Climate Change
     
  13. Will Gilmore
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    Will Gilmore Senior Member

    How interesting.

    -Will (Dragonfly)
     
  14. hoytedow
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    hoytedow Fly on the Wall - Miss ddt yet?

    Emissions will never go to zero.
     

  15. Will Gilmore
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    Will Gilmore Senior Member

    Absolutely true.

    -Will (Dragonfly)
     
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