Announcement

Collapse
No announcement yet.

News to ponder 1-7-2009

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Rustyshakelford
    replied
    Originally posted by Visinedrops View Post
    Not caused by your lawnmower, it has to do with the tiny air molecules that are destroyed between the screen and the blade of your electric razor.

    I am sure the hot wind being circulated around here has nothing to do with it.

    Leave a comment:


  • Big_Saw
    replied
    Originally posted by Visinedrops View Post
    Not caused by your lawnmower, it has to do with the tiny air molecules that are destroyed between the screen and the blade of your electric razor.
    No no no....it's caused by the x-ray reaction to peeling tape....and voluntarily watching Barney or Michael Jackson videos.....or voting Democrat.

    Leave a comment:


  • Visinedrops
    replied
    Not caused by your lawnmower, it has to do with the tiny air molecules that are destroyed between the screen and the blade of your electric razor.

    Leave a comment:


  • Rustyshakelford
    replied
    Originally posted by kenno View Post
    'To mitigate"
    Yeah, understand the solar storms instead of preparing for them,,,sounds very much like Global Warming Of course now that the jerks have been caught-out Big Al is calling it Global Wierding! That's right spend millions on junk science so we whack-job scientists can positively tell you "Maybe". What a load.
    Aren't solar storms caused by the exhaust from my lawnmower?

    Leave a comment:


  • kenno
    replied
    'To mitigate"
    Yeah, understand the solar storms instead of preparing for them,,,sounds very much like Global Warming Of course now that the jerks have been caught-out Big Al is calling it Global Wierding! That's right spend millions on junk science so we whack-job scientists can positively tell you "Maybe". What a load.

    Leave a comment:


  • Rustyshakelford
    replied
    NASA Warns of 'Space Katrina' Radiation Storm



    January 7, 2009
    By Lewis Page
    Register - London


    A study funded by NASA has flagged up yet another terrible hazard for those no longer able to get excited about nuclear war, global pandemics, terrorism, climate change, economic meltdown and asteroid strike. Top space brainboxes say that even if the human race survives all those, there is a serious risk of civilisation being brought crashing to its knees by a sudden high-intensity solar radiation storm.

    Photo: NASA composite image of a solar coronal mass ejection event in 2002. Beware the space equivalent of Hurricane Katrina.

    The new study, carried out for NASA by the US National Academy of Sciences, might tickle the palate of even the most jaded disaster connoisseur.

    "Whether it is terrestrial catastrophes or extreme space weather incidents, the results can be devastating to modern societies that depend in a myriad of ways on advanced technological systems," says Professor Daniel Baker of Colorado Uni, an expert in atmospheric and space physics who led the report's authors.

    In essence, the report, which can be downloaded in pdf here (free registration required) says that sooner or later there will be a solar storm much more powerful than any seen so far in the age of high technology. Such events have occurred in the past, but as the human race then had very basic electrical power grids (or none at all) and made no use of satellites, it didn't matter.

    The next space radiation biggy, however, will hit a human civilisation which is becoming more and more dependent on satellites for essential communication and navigation tasks, and whose electrical grids are much more widespread and heavily stressed. The impact of a bad geomagnetic spike would be somewhat as though an unbelievably powerful electromagnetic pulse bomb - of the sort favoured by movie villains but not yet available - had gone off:


    While a severe storm is a low-frequency-of-occurrence event, it has the potential for long-duration catastrophic impacts to the power grid and its users. Impacts would be felt on interdependent infrastructures, with, for example, potable water distribution affected within several hours; perishable foods and medications lost in about 12-24 hours; and immediate or eventual loss of heating/air conditioning, sewage disposal, phone service, transportation, fuel resupply, and so on ...

    Open access on the transmission system has fostered the transport of large amounts of energy across the power system in order to maximize the economic benefit of delivering the lowest-cost energy to areas of demand. The magnitude of power transfers has grown, and the risk is that the increased level of transfers, coupled with multiple equipment failures, could worsen the impacts of a storm event ...

    In summary, present U.S. grid operational procedures ... are unlikely to be adequate for historically large disturbance events.


    The impact on satellites would be even more severe, as spacecraft have less shielding from the Earth's atmosphere - and in some cases from the magnetosphere. In particular, the present Global Positioning System (GPS) sat constellation, used by almost every navigation system in the world, is regarded as highly vulnerable to a solar event - though new satellites are to go up shortly equipped with a backup signal which will allow errors to be bowled out.

    In general, however, the assembled brainboxes considered that a solar event was a much greater threat to essential space infrastructure than any evil foreign power - for instance - could possibly be. The US military has previously warned of the risk of a "space Pearl Harbour" - a devastating surprise attack against America's space presence, which could leave the world's sole superpower blinded and crippled. According to the National Academy, though, the USA should forget about a space Pearl Harbour and worry instead about "a space Katrina, a storm that we should have been prepared for but were not".

    The report mentions technological solutions to most of these possible ills, but says that they mostly aren't in place (apart from the GPS alterations). According to Richard Fisher, head of NASA's Heliophysics division:

    "To mitigate possible public safety issues, it is vital that we better understand extreme space weather events caused by the sun's activity." ®

    Leave a comment:


  • Brosia
    replied
    Originally posted by Visinedrops View Post
    Similar to the reason for the 1977 New York blackout.

    ahhh, good times, good times. I was just a kid, so I didn't really understand all the ramifications, but I remember all the neighbors getting together and having an impromptu party.... we toasted all sorts of food over bbq's and the kids ran around with flashlights....

    Now, when the NE had another big blackout in, I think it was spring 2002, it was too close after 9-11, we all just hunkered down in our houses.


    anywho, was there any predictions of upcoming geomagnetic storms?

    Leave a comment:


  • Visinedrops
    replied
    Similar to the reason for the 1977 New York blackout.

    Leave a comment:


  • Rustyshakelford
    started a topic News to ponder 1-7-2009

    News to ponder 1-7-2009

    January 7, 2009
    SpaceWeather


    The National Academy of Sciences has released an important new report detailing how geomagnetic storms could damage the infrastructure of modern society. An area of particular vulnerability is power grids. Ground currents induced during century-class storms can melt the huge, multi-ton transformers at the heart of power distribution systems. Because modern power grids are interconnected, a cascade of failures could sweep across the country, rapidly cutting power to tens or even hundreds of millions of people:

    According to the report, "impacts would be felt on interdependent infrastructures with, for example, potable water distribution affected within several hours; perishable foods and medications lost in 12-24 hours; immediate or eventual loss of heating/air conditioning, sewage disposal, phone service, transportation, fuel resupply and so on." Melted transformers can take months to repair or replace--so a single extreme storm could make itself felt long after solar activity subsides. Nothing, it seems, is immune from space weather.


Working...
X