Keyword: magnetism
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An airport in Tampa, Florida, has had to temporarily close its runways to keep up with Earth's magnetic north pole, which is drifting toward Russia at a rate of 40 miles per year. Fox News reports that the international airport was forced to adjust the signs on its busiest runway Thursday because pilots depend on the magnetic fields to navigate. The runway will be closed until Jan. 13, and will re-open with new taxiway signs that indicate its new location on aviation charts, the Tampa Bay Tribune reports. Paul Takemoto, a spokesman for the FAA, says the Earth's magnetic fields...
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SAN FRANCISCO -- Earth's north magnetic pole is drifting from North America at such a clip that it could end up in Siberia in the next 50 years, scientists said Thursday. Despite accelerated movement over the past century, the possibility that Earth's fading magnetic field will collapse or that the magnetic poles will flip is remote. But the shift could mean that Alaska may no longer be able to see the high-altitude shimmering displays of colorful lights called the aurora borealis, or northern lights. Scientists have long known that magnetic poles migrate and in rare cases, swap places. But exactly
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Scientists at the University of Liverpool have discovered that variations in the long-term reversal rate of the Earth's magnetic field may be caused by changes in heat flow from the Earth's core into the base of the overlying mantle. The Earth is made up of a solid inner core, surrounded by a liquid outer core, in turn covered by a thicker or more viscous mantle, and ultimately by the solid crust beneath our feet.
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(CHICAGO) - NASA has been warning about it…scientific papers have been written about it…geologists have seen its traces in rock strata and ice core samples… Now "it" is here: an unstoppable magnetic pole shift that has sped up and is causing life-threatening havoc with the world's weather. Forget about global warming—man-made or natural—what drives planetary weather patterns is the climate and what drives the climate is the sun's magnetosphere and its electromagnetic interaction with a planet's own magnetic field. When the field shifts, when it fluctuates, when it goes into flux and begins to become unstable anything can happen. And...
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The magnetic north pole has moved 161 miles in 6 months only, this puts its arrival in Siberia in less that 2 years, and it is when it arrives there that it will have migrated 40 degrees across the northern hemisphere at this point the poles will shift at high speed over the equator until it reaches 40 degrees south, i will tell you what i expect to happen when it goes past the 40 degrees point in the coming uploads...
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Wandering pole: Scientists predict Mag North will leave our territory by 2005 When Scene in the Northwest, a painting by the explorer and artist Paul Kane, was sold to an unnamed Canadian buyer in Toronto for more than $5-million on Feb. 25, Canada reclaimed a work of art commemorating an important event in her history: the 19th-century quest for the North Magnetic Pole. But new data suggests the Magnetic Pole will soon be leaving Canadian territory and heading for Russia. Estimates say that the pole, known as Mag North, has been in what is now Canada for at least four...
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Assumed to be caused by random fluctuations in the circulation of the molten iron core, the flips may actually be tied to what's going on at Earth's surface. At times in the geologic past when landmasses have bunched together on one side of the equator, the Earth's magnetic field has begun flipping soon thereafter... "What we see clearly is that the surface positions of the continents are linked with the frequency of the reversals," says group member François Pétrélis, a geophysicist at the French research agency CNRS in Paris... Computer simulations have shown how molten iron in the spinning core...
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“A geomagnetic reversal may happen sooner than expected,” says this article in Scientific American.
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Since 2010, the best estimate of the age of Earth's magnetic field has been 3.45 billion years. But now a researcher responsible for that finding has new data showing the magnetic field is far older. John Tarduno, a geophysicist at the University of Rochester and a leading expert on Earth's magnetic field, and his team of researchers say they believe the Earth's magnetic field is at least four billion years old.
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Young Earth was cocooned in a protective shield that magnetically deflected killer solar radiation 200 million years earlier than previously thought, a key factor that allowed life to take hold, according to a new study published this week in the journal Science. The research, based on analysis of ancient silicate crystals from South Africa, has implications for the search for life beyond Earth, which to date has focused on finding planets where liquid water can exist. The study by University of Rochester geophysicist John Tarduno and colleagues suggests that the ability of a planet to generate a large magnetic field...
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The Earth’s continuously changing magnetic field surrounds the planet like an invisible force field – deflecting highly charged solar particles. Reversals are the rule, not the exception. Earth has settled in the last 20 million years into a pattern of a pole reversal about every 200,000 to 300,000 years, although it has been more than twice that long since the last reversal, the Brunhes-Matuyama, that occurred around 780,000 years ago. A temporary reversal, the Laschamp event, occurred around 41,000 years ago, and lasted less than 1,000 years with the actual change of polarity lasting around 250 years. Our planet’s history...
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Textbook Case of Tectonic Movement is Wrong, Says New Study Results from an expedition to the sea floor near the Hawaiian Islands show evidence that the deep Earth is more unsettled than geologists have long believed. A new University of Rochester study suggests that the long chain of islands and seamounts, which is deemed a "textbook" example of tectonic plate motion, was formed in part by a moving plume of magma, upsetting the prevailing theory that plumes have been unmoving fixtures in Earth's history. The research will be published in the August 22 issue of Science. "Mobile magma plumes force...
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SAN FRANCISCO - The strength of the Earth's magnetic field has decreased 10 percent over the past 150 years, raising the remote possibility that it may collapse and later reverse, flipping the planet's poles for the first time in nearly a million years, scientists said Thursday. At that rate of decline, the field could vanish altogether in 1,500 to 2,000 years, said Jeremy Bloxham of Harvard University. Hundreds of years could pass before a flip-flopped field returned to where it was 780,000 years ago. But scientists at a meeting of the American Geophysical Union cautioned that scenario is an...
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Blue Origin test flight, China's space-program, SLS, earth's magnetic field flipping?
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WASHINGTON (AP) - North isn't quite where it used to be. Earth's north magnetic pole has been drifting so fast in the last few decades that scientists say that past estimates are no longer accurate enough for precise navigation. On Monday, they released an update of where magnetic north really was, nearly a year ahead of schedule.
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Rapid changes in the churning movement of Earth's liquid outer core are weakening the magnetic field in some regions of the planet's surface, a new study says. "What is so surprising is that rapid, almost sudden, changes take place in the Earth's magnetic field," said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen. The findings suggest similarly quick changes are simultaneously occurring in the liquid metal, 1,900 miles (3,000 kilometers) below the surface, he said. The swirling flow of molten iron and nickel around Earth's solid center triggers an electrical current, which generates the...
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The researchers explain that instruments for measuring the strength of the Earth's magnetic field were first invented only approximately 200 years ago. In order to examine the history of the field during earlier periods, science is helped by archaeological and geological materials that recorded the properties of the field when they were heated to high temperatures. The magnetic information remains "frozen" (forever or until another heating event) within tiny crystals of ferromagnetic minerals, from which it can be extracted using a series of experiments in the magnetics laboratory. Basalt from volcanic eruptions or ceramics fired in a kiln are frequent...
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Moon model: a superplume from inside the Moon when it was just 500 million years old might explain a lot - and not just about the Moon (Pic: University of California). A mighty 'burp' early in the Moon's life may explain something that has puzzled scientists ever since Apollo astronauts brought back rock samples; why are there so many ancient magnetised rocks lying on the surface? Research published in the journal Nature this week from the University of California at Berkeley, in the United States, suggests that an expunged column of hot rock - like a blob rising to...
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Is it just a coincidence that more than two million huge holes were gouged into the ground - all at the same time - about 12,000 years ago at a magnetic reversal? Usually not more than 20 feet deep - which means that they were probably not formed by meteoric impacts - the holes range in size from one acre to several thousand acres, and measure up seven miles across. Scientists estimate that there could be more than two million Carolina bays (sometimes under different names) spread across the United States from Florida to New Jersey to Texas. I sure...
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Audio file interview of Robert Felix who is the author of Not By Fire, But By Ice and founder of Ice Age Now, one of the biggest climate sites on the web. He discusses the findings that underscored Magnetic Reversals & Evolutionary Leaps, a study in the relationship between climate, pole shifts, and the evolution of species.
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