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Tech Head - The Technology Section
Einstein's Alcove
Earthquake detection and predictions
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<blockquote data-quote="Channel Hopper" data-source="post: 741083" data-attributes="member: 175144"><p>And the link of the sun-cycles, with cycle 24 now on the rise.</p><p></p><p>The last one was abnormally long at 12.6 years, the average over the last two centuries has been 10.7, give or take a fraction, which suggests cycle 24 may be somewhat shorter, but faster in the flux changes between trough and peak, which is about now.</p><p></p><p>Predictions below</p><p></p><p><em>"Even a below-average cycle is capable of producing severe space weather," points out Biesecker. "The great geomagnetic storm of 1859, for instance, occurred during a solar cycle of about the same size we’re predicting for 2013."</em></p><p><em></em></p><p><em>The 1859 storm--known as the "Carrington Event" after astronomer Richard Carrington who witnessed the instigating solar flare--electrified transmission cables, set fires in telegraph offices, and produced Northern Lights so bright that people could read newspapers by their red and green glow. A recent report by the National Academy of Sciences found that if a similar storm occurred today, it could cause $1 to 2 trillion in damages to society's high-tech infrastructure and require four to ten years for complete recovery. For comparison, Hurricane Katrina caused "only" $80 to 125 billion in damage. </em></p><p></p><p></p><p></p><p>_http://science.nasa.gov/science-news/science-at-nasa/2009/29may_noaaprediction/</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 741083, member: 175144"] And the link of the sun-cycles, with cycle 24 now on the rise. The last one was abnormally long at 12.6 years, the average over the last two centuries has been 10.7, give or take a fraction, which suggests cycle 24 may be somewhat shorter, but faster in the flux changes between trough and peak, which is about now. Predictions below [I]"Even a below-average cycle is capable of producing severe space weather," points out Biesecker. "The great geomagnetic storm of 1859, for instance, occurred during a solar cycle of about the same size we’re predicting for 2013." The 1859 storm--known as the "Carrington Event" after astronomer Richard Carrington who witnessed the instigating solar flare--electrified transmission cables, set fires in telegraph offices, and produced Northern Lights so bright that people could read newspapers by their red and green glow. A recent report by the National Academy of Sciences found that if a similar storm occurred today, it could cause $1 to 2 trillion in damages to society's high-tech infrastructure and require four to ten years for complete recovery. For comparison, Hurricane Katrina caused "only" $80 to 125 billion in damage. [/I] _http://science.nasa.gov/science-news/science-at-nasa/2009/29may_noaaprediction/ [/QUOTE]
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Tech Head - The Technology Section
Einstein's Alcove
Earthquake detection and predictions
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