News tagged with geomagnetic field reversal
Evidence of second fast north-south pole flip found
(PhysOrg.com) -- The Earth's magnetic poles flip around every 200,000 years or so, with north becoming south and vice versa. Normally, the process takes 4-5,000 years and it ought to be impossible for the ...
Space & Earth / Earth Sciences
Sep 06, 2010 |
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Search results for geomagnetic field reversal
Tracking a Jurassic reversal of the Earth's magnetic field
Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere.
Space & Earth / Earth Sciences
May 17, 2012 |
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New bug eats sulfates, makes two kinds of magnet
(PhysOrg.com) -- A bacterium recently discovered near Death Valley has some very unusual properties according to a report published in the December 23 issue of Science magazine. While some ‘bugs’ are li ...
Dec 23, 2011 |
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2012: Magnetic pole reversal happens all the (geologic) time
Scientists understand that Earth's magnetic field has flipped its polarity many times over the millennia. In other words, if you were alive about 800,000 years ago, and facing what we call north with a magnetic ...
Space & Earth / Earth Sciences
Nov 30, 2011 |
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'Intelligent design' theme of Art of Science exhibit
Research images from Princeton University's fifth "Art of Science" competition – whose theme is "intelligent design" -- are now available for viewing in an online gallery: http://www.princeton.edu/artofscience/gallery2011/
Nov 14, 2011 |
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Plate tectonics may control reversals in the Earth's magnetic field
The Earth's magnetic field has reversed many times at an irregular rate throughout its history. Long periods without reversal have been interspersed with eras of frequent reversals. What is the reason for these reversals ...
Space & Earth / Earth Sciences
Oct 24, 2011 |
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3D model of the ionosphere F-region developed by NRL scientists
The first global simulation study of equatorial spread F (ESF) bubble evolution using a comprehensive 3D ionosphere model, SAMI3, has been demonstrated. The model self-consistently solves for the neutral wind ...
Jan 17, 2011 |
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Planetary magnetic fields: The hunt for better models
Some three thousand kilometers below the surface of the Earth and with temperatures reaching those at the surface of the sun, the core of our home planet is no more within our physical reach today than it ...
Space & Earth / Space Exploration
Nov 25, 2010 |
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As the World Churns
(PhysOrg.com) -- "Terra firma." It's Latin for "solid Earth." Most of the time, at least from our perspective here on the ground, Earth seems to be just that: solid. Yet the Earth beneath our feet is actually ...
Space & Earth / Earth Sciences
Dec 28, 2009 |
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Paleomagnetists put controversy to rest
(PhysOrg.com) -- Princeton University scientists have shown that, in ancient times, the Earth's magnetic field was structured like the two-pole model of today, suggesting that the methods geoscientists use ...
Space & Earth / Earth Sciences
Oct 02, 2009 |
4.5 / 5 (11) |
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Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations
(PhysOrg.com) -- Based on studies of old volcanic basalt, scientists know that the Earth’s magnetic field reverses at irregular intervals, ranging from tens of thousands to millions of years. Volcanic basalt ...
Apr 23, 2009 |
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List of search results for geomagnetic field reversal
