Ocean News

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

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  1. ImaginaryNumber
    Joined: May 2009
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    ImaginaryNumber Imaginary Member

    Arctic’s strongest sea ice breaks up for first time on record | The Guardian

    The oldest and thickest sea ice in the Arctic, north of Greenland, has started to break up.

    Ice to the north of Greenland is usually particularly compacted due to the Transpolar Drift Stream.

    Abnormal temperature spikes in February and earlier this month have left it vulnerable to winds, which have pushed the ice further away from the coast than at any time since satellite records began.

    Although this is unlikely to be a record low year overall, it is in line with predictions that there will be no summer ice in the Arctic Ocean at some point between 2030 and 2050.
     
  2. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

    A freshwater, saltwater tug-of-war is eating away at the Everglades
    Scientists wrestle with how to fight the effects of sea level rise and years of redirecting freshwater flow
    The Everglades has endured decades of human meddling. Now it faces a more relentless foe: rising seas. https://www.sciencenews.org/article/florida-everglades-freshwater-saltwater-sea-level-rise


    [​IMG]
     
  3. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Trees are migrating west to escape climate change | Popular Science

    Trees, as a species, migrate in response to environmental challenges, especially climate change.

    Some species, such as evergreens, are heading to the Poles to escape the heat. But others, like certain oaks and maple, are going west in search of rain.

    The study, which was published in Science Advances, focused only on the eastern half of the U.S.

    [​IMG]
    Changes in temperature and precipitation between the recent past (1951–1980)
    and the study period (1981–2014) across the eastern United States.
     
  4. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Climate change sea level rises could increase risk for more devastating tsunamis worldwide | Science Daily

    Even minor sea-level rise, by as much as a foot, poses greater risks of tsunamis for coastal communities worldwide.

    For instance, in a simulated study of Macau (near Hong Kong) -- population 613,000 -- a 1.5-foot rise in sea level would increase the frequency of tsunami-induced flooding by 1.2 to 2.4 times, and for a 3-foot increase in sea level the frequency would be from 1.5 to 4.7 times.

    It is estimated that sea levels in the Macau region will increase by 1.5 feet by 2060 and 3 feet by 2100.

    The hazard of large tsunamis in the South China Sea region primarily comes from the Manila Trench, a megathrust system that shares many of the characteristics of the source areas that resulted in the 2004 Sumatra-Andaman earthquake, as well as the 2011 earthquake in northern Japan, both causing massive loss of life.

    The study was published in Science Advances.
     
    Last edited: Aug 27, 2018
  5. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Scientists find corals in deeper waters under stress too | PHYS.org

    Most research into thermal-induced coral stress has been confined to the near-sea level zones.

    For nearly 20 years a small team of divers have conducted weekly dives at locations across Palau to assess bleaching in the mesophotic zone.

    Their observations showed that deeper zones are showing bleaching coincident with the higher temperatures, right along with shallow reefs.

    The study was published in Geophysical Research Letters.
     
  6. SamSam
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    Location: Coastal Georgia

    SamSam Senior Member

  7. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

    'We're doomed': Mayer Hillman on the climate reality no one else will dare mention https://www.theguardian.com/environment/2018/apr/26/were-doomed-mayer-hillman-on-the-climate-reality-no-one-else-will-dare-mention?CMP=fb_gu

    “The outcome is death, and it’s the end of most life on the planet because we’re so dependent on the burning of fossil fuels. There are no means of reversing the process which is melting the polar ice caps. And very few appear to be prepared to say so.”

    Hillman, an 86-year-old social scientist and senior fellow emeritus of the Policy Studies Institute, does say so. His bleak forecast of the consequence of runaway climate change, he says without fanfare, is his “last will and testament”. His last intervention in public life. “I’m not going to write anymore because there’s nothing more that can be said,” he says when I first hear him speak to a stunned audience at the University of East Anglia late last year.
    ...............................
    Hillman accuses all kinds of leaders – from religious leaders to scientists to politicians – of failing to honestly discuss what we must do to move to zero-carbon emissions. “I don’t think they can because society isn’t organised to enable them to do so. Political parties’ focus is on jobs and GDP, depending on the burning of fossil fuels.”

    Without hope, goes the truism, we will give up. And yet optimism about the future is wishful thinking, says Hillman. He believes that accepting that our civilisation is doomed could make humanity rather like an individual who recognises he is terminally ill. Such people rarely go on a disastrous binge; instead, they do all they can to prolong their lives.

    Can civilisation prolong its life until the end of this century? “It depends on what we are prepared to do.” He fears it will be a long time before we take proportionate action to stop climatic calamity. “Standing in the way is capitalism. Can you imagine the global airline industry being dismantled when hundreds of new runways are being built right now all over the world? It’s almost as if we’re deliberately attempting to defy nature. We’re doing the reverse of what we should be doing, with everybody’s silent acquiescence, and nobody’s batting an eyelid.”

    Mayer Hillman - Wikipedia https://en.wikipedia.org/wiki/Mayer_Hillman
     
    Last edited: Aug 30, 2018
  8. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Most land-based ecosystems worldwide risk 'major transformation' due to climate change | Science Daily

    Under a "business as usual" emissions scenario vegetation changes across the planet's wild landscapes will likely be more far-reaching and disruptive than earlier studies suggested.

    The changes will threaten global biodiversity and derail vital services that nature provides to humanity, such as water security, carbon storage and recreation.

    Some of the expected vegetational changes are already underway in places like the American West and Southwest.

    The fact that predictions from these diverse approaches are converging "strengthens the inference that projected climate changes will drive major ecosystem transformations."

    The study, published in Science, is the first to use paleoecological data to project the magnitude of future ecosystem changes on a global scale.
     
  9. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

    The Ocean Cleanup Is Starting, Aims To Cut Garbage Patch By 90% By 2040
    The Ocean Cleanup Is Starting, Aims To Cut Garbage Patch By 90% By 2040 https://www.forbes.com/sites/jeffkart/2018/08/28/the-ocean-cleanup-is-starting-aims-to-cut-garbage-patch-by-90-by-2040/#648bab7b253e

    [​IMG]

    A massive cleanup of plastic in the seas will begin in the Pacific Ocean, by way of Alameda, California. The Ocean Cleanup, an effort that's been five years in the making, plans to launch its beta cleanup system, a 600-meter (almost 2,000-foot) long floater that can collect about five tons of ocean plastic per month.

    The Ocean Cleanup plans to monitor the performance of the beta, called System 001, and have an improved fleet of 60 more units skimming the ocean for plastics in about a year a half. The ultimate goal of the project, founded by Dutch inventor Boyan Slat when he was 18, is to clean up 50% of the patch in five years, with a 90% reduction by 2040.

    The Ocean Cleanup, an effort that's been five years in the making, plans to launch its beta cleanup system, a 600-meter (almost 2,000-foot) long floater that can collect about five tons of ocean plastic per month.
    ....................................................................................................................

    This thing will pick up 60 tons per year. 8,800,000 tons of plastic get dumped in the ocean every year.

    8,800,000 divided by 60 = 146,666

    It would take 146,666 of these things just to keep pace with the amount of plastic we dump in now. That's not even including the 165,000,000 tons that are already in the ocean.

    146,666 times 2,000' = 293,332,000 feet. 293,332,000 divided by 5,280 feet = 55,555.

    That's 55,555 miles of these things just to keep pace.

    This thing will work to skim money from people but won't make a dent in the oceans trash.
     
    Last edited: Aug 31, 2018
  10. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Global warming: More insects, eating more crops | PHYS.org

    Crop losses for critical food grains will increase substantially as rising temperatures increase the metabolic rate and population growth of insect pests.

    Worldwide, insect pests currently consume up to 20 percent of the plants that humans grow for food.

    Crop losses are projected to rise by 10 to 25% per degree of warming, resulting in up to a 75% increase in losses if temperatures increase by 3°C.

    Insects have an optimal temperature where their population grows best. As the tropics increase in temperature insect populations will increase slowly. But in the temperate regions (Europe and North America), temperature increases will cause insect populations to grow faster.

    Wheat, which is typically grown in cool climates, will suffer the most, as increased temperatures will lead to greater pest populations and survival rates over the winter.

    Maize, which is grown in some areas where population rates will increase and others where they will decline, will face a more uneven future.

    For rice, which is mostly grown in warm tropical environments, crop losses will likely stabilize if average temperatures rise above 3°C, as insect population growth drop.
     
  11. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Africa to suffer major blackouts as climate change dries up hydropower dams | The Independent

    Countries in southern and eastern Africa are due to more than double their hydropower capacity by 2030.

    The El Niño in 2015 and 2016 brought drought conditions to southern Africa and lowered water levels in dams so much that many areas experienced blackouts.

    Many of the dams currently being planned will be located in the same river basins that have been worst affected by drought in recent years.

    Major hubs outside of Africa, from Mexico City to London, are likely to feel the effects of droughts as well.

    The study was sponsored by the Grantham Research Institute on Climate Change and the Environment, London School of Economics and Political Science.
     
  12. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Melting Glaciers in Canada Could Indicate Acceleration in Global Warming | Newsweek

    Between 1999 and 2015 1,350 out of 1,800 glaciers in Canada's Ellesmere Island shrank as average temperatures in the area rose more than 3 degrees.

    This is 1,050 square miles of glaciers that have melted, compared to 588 square miles over the 40 years between 1959 and 2000.

    Since the first survey of the region in 1906, the island has lost more than 90 percent of its original ice cover, according to The Canadian Encyclopedia.

    The study was published in the Journal of Glaciology.
     
  13. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    How Much Hotter Is Your Hometown Than When You Were Born? | New York Times

    As the world warms because of human-induced climate change, most of us can expect to see more days when temperatures hit 90 degrees Fahrenheit (32 degrees Celsius) or higher. See how your hometown has changed so far and how much hotter it may get.

    [An interactive feature. Enter a LOCATION and a START YEAR]

    [​IMG]
     
  14. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Many Major Airports Are Near Sea Level. A Disaster in Japan Shows What Can Go Wrong. | New York Times

    A quarter of the world’s 100 busiest airports are less than 10 meters, or 32 feet, above sea level.

    Twelve of those airports — including hubs in Shanghai, Rome, San Francisco and New York — are less than 5 meters above sea level.

    Hurricane Sandy in 2012 inundated all three airports that serve New York City.

    Typhoon Goni closed runways at Hongqiao International Airport outside Shanghai in 2015.

    This past week, Kansai airport, which serves Osaka, Kyoto and Kobe, was flooded by Typhoon Jebi, which generated a storm surge that reached almost 11 feet, a record for Osaka Bay.

    [​IMG]
    Kansai airport, which serves Osaka, Kyoto and Kobe,
    was inundated this past week when a typhoon hit Japan.​
     

  15. rwatson
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    Location: Tasmania,Australia

    rwatson Senior Member

    "More than 4,000 miles (6,440 kilometres) of internet cable are projected to go underwater in the next 15 years,
    and Americans living in New York, Miami, and Seattle are most vulnerable to related infrastructure damage, a team of researchers found.

    Scientists at the University of Oregon and the University of Wisconsin-Madison, who presented their study at a July conference, concluded that more than 1,000 data centres, which store servers and routers, could be damaged due to floods."
    Internet access in the US could be threatened by rising sea levels in as little as 15 years https://www.businessinsider.com.au/internet-access-threatened-by-rising-seas-in-next-15-years-2018-8?r=US&IR=T
     
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