Ocean News

Discussion in 'All Things Boats & Boating' started by ImaginaryNumber, Oct 8, 2015.

  1. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    An Elusive Whale Is Found All Around the World
     
  2. Angélique
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    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    Below the Energy Observer, an recycled 1983 built racing maxi catamaran (sail), lengthened four times in previous lives, so in her fifth live now, link says 100% wind and solar energy for propulsion and live aboard electric power, with surplus energy storage in batteries and hydrogen tanks for propulsion and live aboard power for when natural sources aren't sufficiently available, currently circumnavigating the globe, 6 years 50 countries planning with 101 stopovers for promotion of renewable energy, it's mostly in those port times when the surplus energy is planned to be stored as safety margin for the crossings.

    I've posted a bunch of links and videos about it on the thread on the thread Gyrocopter rotor instead of canvas sail ?post #28 ~ 32

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    boat info starts at 1:28

     
    Last edited: Mar 30, 2019
  3. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    2-metre sea level rise 'plausible' by 2100 | PHYS.org
     
  4. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Comprehensive global analysis shows a warmer ocean will hold lower animal abundance, with fish and mammals to suffer the most

    Story highlights
    • A comprehensive global-ocean assessment shows that marine animals such as fish, invertebrates and marine mammals will decline from increasing temperatures
    • Marine animals, many of which are already of conservation concern, could show a particular vulnerability
    • In contrast, many polar regions around the Arctic and Antarctica could show biomass increases
    The extent of projected losses can be constrained by emission reductions, with only a 5% decline under a strong mitigation scenario, but 17% under business-as-usual emissions by the end of the 21st century. Notably, the magnitude of this climate change effect was similar in an ocean with and without fishing pressure....

    Mapping the projected changes in the global ocean revealed that biomass will decline in many temperate to tropical ocean regions where people are highly dependent on seafood supply and where marine biodiversity is already affected by cumulative human impacts. Here, climate change is creating another layer of stress onto marine ecosystems and human societies alike...
     
  5. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    With More Storms and Rising Seas, Which U.S. Cities Should Be Saved First?

    After three years of brutal flooding and hurricanes in the United States, there is growing consensus among policymakers and scientists that coastal areas will require significant spending to ride out future storms and rising sea levels — not in decades, but now and in the very near future. There is also a growing realization that some communities, even sizable ones, will be left behind.

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  6. Angélique
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    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    There's info about damage to Styrofoam and research* about cleaning up all kinds of polystyrene foam garbage on the thread: What bores holes in styrofoam

    * all originally published on September 21, 2015 as far as posted there till now, that's before post #28 at the time of this note.
     
    Last edited: Jun 21, 2019
  7. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Scientists capture historic video of a giant squid

    For the first time, a live giant squid had been filmed in U.S. waters. The video was captured by a team of researchers on an expedition funded by the National Oceanic and Atmospheric Administration, who were studying the impacts of light-deprivation on deep sea creatures who live in the "midnight zone," 3,280 feet below the surface.

     
  8. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    CO2 emissions are on track to take us beyond 1.5 degrees of global warming

    A new study shows just how hard it may be to limit global warming to 1.5 degrees Celsius over preindustrial times.

    The world’s existing power plants, industrial equipment, vehicles and other CO₂-emitters are on track to pump out enough carbon dioxide to blow past that target by midcentury, researchers report July 1 in Nature. Add in future power plants that are already planned, permitted or under construction, and we could emit enough by 2033 to raise average global atmospheric temperatures by 1.5 degrees, the researchers say.

    If we want to limit warming to 1.5 degrees, then “we cannot invest more in fossil fuel power or infrastructure,” says Thorsten Mauritsen, a physical climate scientist at Stockholm University who was not involved with the work. “Everything we do from now has to change direction and not use fossil fuels.”....
     
  9. Angélique
    Joined: Feb 2009
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    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    50th anniversary of Leave them a flower by Wally Whyton, thread Songs About Boats, post #345, 3rd video.
     
    Last edited: Jul 4, 2019
  10. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Scientists have discovered a sea of fresh water under the ocean

    Thousands of years ago, glaciers covered much of the planet. Oceans receded as water froze in massive sheets of ice blanketing the North American continent. As the ice age ended, glaciers melted. Massive river deltas flowed out across the continental shelf. The oceans rose, and fresh water was trapped in sediments below the waves. Discovered while drilling for oil offshore in the 1970s, scientists thought these “isolated” pockets of fresh water were a curiosity. They may instead prove to be a parched world’s newest source of fresh water....

    It turns out the subterranean pools stretch for at least 50 miles off the US Atlantic coast, containing vast stores of low-salinity groundwater, about twice the volume of Lake Ontario. The deposits begin about 600 ft (183 m) below the seafloor and stretch for hundreds of miles. That rivals the size of even the largest terrestrial aquifers....

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  11. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Part of the Pacific Ocean Is Not Warming as Expected. Why?

    ...Climate models of global warming — computerized simulations of what various parts of the earth are expected to do in reaction to rising greenhouse gases — say that the equatorial cold tongue, along with other regions, should have started warming decades ago, and should still be warming now. But the cold tongue has remained stubbornly cold....

    In a new paper in the journal Nature Climate Change, [Richard Seager] and colleagues use simplified models that isolate the fundamental dynamics of the tropical Pacific atmosphere-ocean system. These, they say, comport with the cold tongue’s actual behavior — and show that it is consistent with rising greenhouse gases....

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    ...If, instead, we are right and the cold tongue will not warm as much, then drying in southwest North America, subtropical South America and east Africa could be more severe than the complex models project. At the same time, equatorial South America and the Sahel might see wetter conditions....
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

  13. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Breaching a “carbon threshold” could lead to mass extinction

    Daniel Rothman, professor of geophysics and co-director of the Lorenz Center in MIT’s Department of Earth, Atmospheric and Planetary Sciences, has found that when the rate at which carbon dioxide enters the oceans pushes past a certain threshold — whether as the result of a sudden burst or a slow, steady influx — the Earth may respond with a runaway cascade of chemical feedbacks, leading to extreme ocean acidification that dramatically amplifies the effects of the original trigger....

    But Rothman says [the smaller the trigger, the smaller the environmental fallout] is not the case. It didn’t matter what initially caused the events; for roughly half the disruptions in his database, once they were set in motion, the rate at which carbon increased was essentially the same. Their characteristic rate is likely a property of the carbon cycle itself — not the triggers, because different triggers would operate at different rates.....

    According to Rothman, today we are “at the precipice of excitation,” and if it occurs, the resulting spike — as evidenced through ocean acidification, species die-offs, and more — is likely to be similar to past global catastrophes.....
     
  14. ImaginaryNumber
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    ImaginaryNumber Imaginary Member


  15. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

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