NASA: The Sunís Magnetic Field is about to Flip
Dr. Tony Phillips | NASA Science News
Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sunís vast magnetic field is about to flip.
"It looks like weíre no more than 3 to 4 months away from a complete field reversal," says solar physicist Todd Hoeksema of Stanford University. "This change will have ripple effects throughout the solar system."
The sunís magnetic field changes polarity approximately every 11 years. It happens at the peak of each solar cycle as the sunís inner magnetic dynamo re-organizes itself. The coming reversal will mark the midpoint of Solar Cycle 24. Half of íSolar Maxí will be behind us, with half yet to come.
Hoeksema is the director of Stanfordís Wilcox Solar Observatory, one of the few observatories in the world that monitor the sunís polar magnetic fields. The poles are a herald of change. Just as Earth scientists watch our planetís polar regions for signs of climate change, solar physicists do the same thing for the sun. Magnetograms at Wilcox have been tracking the sunís polar magnetism since 1976, and they have recorded three grand reversalsówith a fourth in the offing.
Solar physicist Phil Scherrer, also at Stanford, describes what happens: "The sunís polar magnetic fields weaken, go to zero, and then emerge again with the opposite polarity. This is a regular part of the solar cycle."
A reversal of the sunís magnetic field is, literally, a big event. The domain of the sunís magnetic influence (also known as the "heliosphere") extends billions of kilometers beyond Pluto. Changes to the fieldís polarity ripple all the way out to the Voyager probes, on the doorstep of interstellar space.
When solar physicists talk about solar field reversals, their conversation often centers on the "current sheet." The current sheet is a sprawling surface jutting outward from the sunís equator where the sunís slowly-rotating magnetic field induces an electrical current. The current itself is small, only one ten-billionth of an amp per square meter (0.0000000001 amps/m2), but thereís a lot of it: the amperage flows through a region 10,000 km thick and billions of kilometers wide. Electrically speaking, the entire heliosphere is organized around this enormous sheet.
During field reversals, the current sheet becomes very wavy. Scherrer likens the undulations to the seams on a baseball. As Earth orbits the sun, we dip in and out of the current sheet. Transitions from one side to another can stir up stormy space weather around our planet.
Cosmic rays are also affected. These are high-energy particles accelerated to nearly light speed by supernova explosions and other violent events in the galaxy. Cosmic rays are a danger to astronauts and space probes, and some researchers say they might affect the cloudiness and climate of Earth. The current sheet acts as a barrier to cosmic rays, deflecting them as they attempt to penetrate the inner solar system. A wavy, crinkly sheet acts as a better shield against these energetic particles from deep space.
As the field reversal approaches, data from Wilcox show that the sunís two hemispheres are out of synch.
"The sunís north pole has already changed sign, while the south pole is racing to catch up," says Scherrer. "Soon, however, both poles will be reversed, and the second half of Solar Max will be underway."
When that happens, Hoeksema and Scherrer will share the news with their colleagues and the public.
Article from: nasa.gov
Tune into Red Ice Radio:
Jay Weidner, Barbara Hand Clow & Lawrence E. Joseph - 2012 Roundtable Special
Will Hart - Solar Flare Apocalypse, Accelerated Natural Disasters & Evolution
Paul A. LaViolette - Earth Under Fire, Galactic Superwaves & Subquantum Kinetics
Micheal Sunanda - Extreme Weather, Global Warming & Permaculture
Robert Schoch - The Mystery of the Sphinx, Forgotten Civilization & Catastrophic Solar Outbursts
Matthew Stein - Hour 1 - When Technology Fails & Six Civilization Busters
Matthew Stein - Hour 2 - 400 Chernobyls, Super Solar Storms & EMPs
David Talbott - Lightning Scarred Planet Mars & The Electric Sun
Randall Carlson - Hour 1 - Cycles of Catastrophe & Cosmic Patterns
Will Hart - Solar Flare Apocalypse & Comets
David Talbott - Hour 1 - Symbols of an Alien Sky
Troy McLachlan & Theodore Holden - Hour 1 - Cosmos in Collision: Antique Solar System, Neanderthals & Modern Man
A storm is coming: Sunís poles are set to FLIP and it could lead to bad weather and radio disruption
Reverse! Sunís magnetic field on the brink of 180-degree flip
Magnetic Portals Connect Sun and Earth
Mystery of Moonís Magnetic Field Deepens
New energy pattern observed at National High Magnetic Field Laboratory
Bioelectromagnetics: Bees & Flowers Communicate Using Electrical Fields, Scientists Find
Earthís Magnetic Field Made Quick Flip- Flop
Magnetic polar shift on the sun underway
What If Earthís Magnetic Poles Flip?
EMP Attack and Solar Storms, Part II: Cascading Failures and Nuclear Meltdown
2013ís solar maximum could be weakest since the dawn of the space age
Huge X-class Solar Flares Keep Erupting from Sun: 4 in 48 Hours!
The Electric Sun (Magnetic Field, Schuman Resonance, Pole Shift)
WAL THORNHILL: From Cosmic Currents to the Electric Sun
Earthís Inconstant Magnetic Field
Latest News from our Front Page
ABC Is Hiding Details of Killer Vester Flanagan's Manifesto ...(Must Be Littered With Liberal Propaganda)
Killer Vester Flanagan was a big Obama supporter.
But, you’d never know it from the liberal media.
The media is hiding Flanagan’s political leanings from the American public.
ABC has yet to release Flanagan’s manifesto.
It must be littered with embarrassing liberal propaganda.
The Tatler reported, via Instapundit:
Two days ago, ABC News reported that Vester Flanagan, the murderer of two WDBJ employees, sent a 23-page ...
Austria, Libya count dead as number of migrants crossing Mediterranean soars
Austria said on Friday 71 refugees including a baby girl were found dead in an abandoned freezer truck, while Libya recovered the bodies of 82 migrants washed ashore after their overcrowded boat sank on its way to Europe and scores more were feared dead.
The U.N. refugee agency said the number of refugees and migrants crossing the Mediterranean to reach Europe ...
Financial Times Calls For Abolishing Cash
liminating physical currency necessary to give central banks more power
The Financial Times has published an anonymous article which calls for the abolition of cash in order to give central banks and governments more power.
Entitled The case for retiring another ‘barbarous relic’, the article laments the fact that people are stockpiling cash in anticipation of another economic collapse, a factor which ...
Serbian government bans anti-mass immigration protests, and plans ahead for mass immigration
Nebojsa Stefanovic, Serbia’s Interior Minister said protesters who are concerned about “an EU plan” to settle thousands of illegal immigrants into the country, will not be allowed to voice their concerns in a protest march on Monday, 31st of August.
“We will not allow the expression of intolerance and hatred to be something that is characteristic of Serbia” said Stefanovic.
“The Ministry ...
Germany asks Facebook to remove 'racist' anti-migrant posts
Heiko Maas, Germany's justice minister, says social network should remove xenophobic posts in the same way it deals with nudity
Germany is calling on Facebook to remove “xenophobic and racist” anti-migrant posts from its website and apps.
Heiko Maas, the German justice minister, has written to the company to demand an urgent review of its policy over hate messages.
“Photos of certain ...
|More News » |