Magnetic Apocalypse?

Discussion in 'Environment' started by westwall, Jul 16, 2010.

  1. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    An intersting article about the influence of magnetism on the earth. I particularly liked his opinion on AGW

    "The energy mankind generates is so small compared to that overall energy budget that it simply cannot affect the climate. However, the energy budget is very under-studied because there is only a small range of observations used to measure it. This is a very complicated process.

    Today we cannot measure it with 99% accuracy. Our current measurements are only 10%-15% accurate. The change must be at least 1% to change the climate.

    The planet’s climate is doing its own thing, but we cannot pinpoint significant trends in changes to it because it dates back millions of years while the study of it began only recently. Some processes take seconds and other years. You cannot check man’s state of health in a matter of seconds; the process could take a fortnight and even then the result will not be definitive. The same goes for climate change. We are children of the Sun; we simply lack data to draw the proper conclusions."


    Magnetic apocalypse 2012 | Opinion & analysis | RIA Novosti
     
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  2. CrusaderFrank
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    CrusaderFrank Diamond Member

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    ManMade Global Warming is messing with the magnetic field too, amiright?

    Has to be!

    The field was stable before we choked the atmosphere with Sensitive CO2
     
  3. strollingbones
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    strollingbones Diamond Member

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    so what ever happen to the magnetic poles flippin....wasnt that suppose to happen
     
  4. CrusaderFrank
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    CrusaderFrank Diamond Member

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    Google: South Atlantic Magnetic anomaly.

    I'm not sure you want to be here when they flip.
     
  5. Old Rocks
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    Old Rocks Diamond Member

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    The magnetic poles flip quite often on a geological time scale. And there is no record of that flipping having ever negatively affected life at that time.

    On the other hand, there are several times in the geological records when we have had a spike of GHGs, and all are accompanied with extinction periods, minor to great.
     
  6. CrusaderFrank
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    CrusaderFrank Diamond Member

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    And you're trying to prevent an extinction event in your own time. How humble.

    Flipping the poles might be cause a worldwide EMP, the best part of which will be I won't have to read your dire "AGW!!" Warning anymore
     
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  7. The T
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    The T George S. Patton Party Supporting Member

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    And don't discount H20 Vapor! You know water and 'trons...:eusa_whistle:
     
  8. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    While I agree with you on the effects of a pole reversal, the AGW stuff has to go. there is little evidence to support even the most recent extinction event and there is zero evidence to support any of the others.

    Quit making stuff up.
     
  9. Old Rocks
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    Old Rocks Diamond Member

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    Methane & Climate — OSS Foundation

    Svensen H et al (2007) Hydrothermal venting of greenhouse gases triggering Early Jurassic global warming Earth Planetary Sci Lett 256 554-566

    Abstract: “The climate change in the Toarcian (Early Jurassic) was characterized by a major perturbation of the global carbon cycle. The event lasted for approximately 200,000 years and was manifested by a global warming of similar to 6 degrees C, anoxic conditions in the oceans, and extinction of marine species. The triggering mechanisms for the perturbation and environmental change are however strongly debated. Here, we present evidence for a rapid formation and transport of greenhouse gases from the deep sedimentary reservoirs in the Karoo Basin, South Africa…….”

    likewise comprehensive analyses shows a coincidence of major tectonic events, and resulting elevation of greenhouse gas levels, are associated with several of the major extinctions of the last 300 million years. Note that CO2 isn’t the only player. Methane is implicated in several of these events (see especially the PETM below) and sulphurous oxides and their effects on ocean acidity and oxygen content are also implicated:

    Wignall P (2005) The link between large igneous province eruptions and mass extinctions Elements 1, 293-297

    Abstract: “In the past 300 million years, there has been a near-perfect association between extinction events and the eruption of large igneous provinces, but proving the nature of the causal links is far from resolved. The associated environmental changes often include global warming and the development of widespread oxygen-poor conditions in the oceans. This implicates a role for volcanic CO2 emissions, but other perturbations of the global carbon cycle, such as release of methane from gas hydrate reservoirs or shut-down of photosynthesis in the oceans, are probably required to achieve severe green-house warming. The best links between extinction and eruption are seen in the interval from 300 to 150 Ma. With the exception of the Deccan Trap eruptions (65 Ma), the emplacement of younger volcanic provinces has been generally associated with significant environmental changes but little or no increase in extinction rates above background levels.”
     
  10. Old Rocks
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    Methane Burps: Ticking Time Bomb | Energy Bulletin

    Methane Burps: Ticking Time Bomb
    by John Atcheson
    The Arctic Council's recent report on the effects of global warming in the far north paints a grim picture: global floods, extinction of polar bears and other marine mammals, collapsed fisheries. But it ignored a ticking time bomb buried in the Arctic tundra.
    There are enormous quantities of naturally occurring greenhouse gasses trapped in ice-like structures in the cold northern muds and at the bottom of the seas. These ices, called clathrates, contain 3,000 times as much methane as is in the atmosphere. Methane is more than 20 times as strong a greenhouse gas as carbon dioxide.
    Now here's the scary part. A temperature increase of merely a few degrees would cause these gases to volatilize and "burp" into the atmosphere, which would further raise temperatures, which would release yet more methane, heating the Earth and seas further, and so on. There's 400 gigatons of methane locked in the frozen arctic tundra - enough to start this chain reaction - and the kind of warming the Arctic Council predicts is sufficient to melt the clathrates and release these greenhouse gases into the atmosphere.
     

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