Weakening of Earth’s Magnetic Field and Solar Cycles

New solar cycle, in combination with the weakening magnetic field environment, can have severe consequences for the country in terms climate, power networks and human behavior.

If you thought that things we should be concerned about only include wars, famine and economic breakdowns think again. Emerging science suggests that the next cycle of solar flares could be strong enough to disrupt the entire electrical grid of the planet.

Planet’s magnetic field

Magnetosphere is a bubble of magnetism that surrounds Earth and protects us from solar wind. Fortunately, the planet’s magnetic field rejects most of the particles in a circular orbit around the Earth. Like the weather patterns on Earth, the solar or wind patterns can change rapidly. It is fortunate that our planet’s magnetosphere reacts to the threat and absorbs shock. without wavering, and leaping.

Geophysicists call this reaction geomagnetic storm, but because of the way that distorts Earth’s magnetic field also has to be called electromagnetic pollution. In these circumstances we see the polar light in our night sky.

Strange things are happening in the atmosphere and in space.

Earth’s magnetic field has been weakening. This decrease actually began 2,000 years ago, but the rate of decrease rapidly grew 300 years ago. However, in the last twenty years, the magnetic field has become erratic.

Aeronautical maps of the world, which is used to enable the aircraft has landed using automatic control systems had to be revised in the whole world to autopilot systems to work.

The THEMIS Mission

NASA’s five spacecraft from the mission THEMIS discovered a crack in the Earth’s magnetic field that is 10 times larger than anything previously thought to exist.

Because of this the solar wind can penetrate through the opening to “recharge” the magnetosphere, causing a strong geomagnetic storm. Exploring the mystery is a key goal of the THEMIS mission, launched in February 2007. The big discovery occurred on 3 June 2007. When the five probes serendipitously flew through the cracks just at the moment it opened. Onboard sensors recorded a torrent of solar wind particles streaming into the magnetosphere, signaling the event of unexpected size and importance.

But the breach itself is not the biggest surprise. Researchers are even more amazed and baffled at the unexpected way in which it occurs, overturning the accepted notions of space physics.

This finding fundamentally changes our understanding of the interaction of the solar wind and magnetosphere.

“The opening was a huge four times wider than Earth itself,” said Li Wenhui, a space physicist from the University of New Hampshire, who analyzed the data. A hunting Li’s colleague Jimmy Raeder, also of the University of New Hampshire. He said

“the 27-l particles per second were flowing into the magnetosphere – that’s 1 followed by 27 zeros. This influx is an order of magnitude greater than what we thought was possible.”

Space physicists have long believed that the holes in the Earth’s magnetosphere open only in response to solar magnetic fields that are oriented toward the south. To the layperson it may seem like a quibble, but to a space physicist, it is almost like an earthquake.

Unexpected Pad Shield

In conjunction with changes in our magnetic field today in the scientific community believes that the solar wind pushes the Earth’s magnetosphere almost directly above the equator, where the planet’s magnetic field points north.

Scientists had previously believed that if a large amount of solar magnetism is also directed towards the north, the two fields should reinforce one another, strengthening the defense of the Earth’s magnetic closing door and the solar wind.

Language of space physics, solar magnetic field points north is called the “northern IMF” (interplanetary magnetic field) and is synonymous with “shields”.

While researchers have investigated the gap in the magnetic field, they discovered that the solar wind entered the Earth’s protective shield when the magnetic field was aligned.

Events with Northern IMF does not trigger geomagnetic storms, but creates conditions for the storm filling the magnetosphere with plasma.

Loaded magnetosphere is ready for the auroras, power outages and other disruptions that may occur when a CME (coronal mass ejection). This means that the impact of solar flares is 20 times stronger when the magnetic fields are aligned.

Earth’s magnetic field change

Earth’s climate significantly affects the planet’s magnetic field, according to the Danish study, published in January 2009. that could challenge the notion that human emissions responsible for global warming.

“Our results show a strong correlation between the strength of Earth’s magnetic field and the amount of precipitation in the tropics.”

Said one of the two Danish geophysicists involved in the study,

Faurschou Mads Knudsen from the Department of Geology University of Denmark Varhus newspaper Videnskab.

Results of the study (which was also published in the American scientific journal Geology) speak in favor of a controversial theory that a decade ago published Danish astrophysicist Henrik Svensmark. He claimed that the climate has a strong influence particles of galactic cosmic radiation (GCR), which penetrate into Earth’s atmosphere.

TORQUE Geomagnetic Field

Rapid changes in the turbulent movement of the Earth’s liquid outer cortex attenuate the magnetic field in some regions of the planet’s surface.

“What is surprising is the fact that the Earth’s magnetic field occurs fast, almost instantaneous changes,”

said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen.

The results suggest that similar changes occur simultaneously velocity in liquid metal, 3,000 miles beneath the surface, ie said Olsen. Fluctuations in the magnetic field have occurred in some scattered regions on Earth.

These changes, “my point to the prospect of a trade geomagnetic field”, ie co-author published a study, scientists from the German Research Centre for Geosciences in Potsdam. Earth’s magnetic field reversed hundreds of times over the past billion years, and for the completion of this process might be needed thousands of years. The weakening of the magnetic field also opens up more layers of Earth’s atmosphere to intense charged particle radiation. scientists have said.

Cosmic Rays Hitting Earth

An international team of researchers discovered a puzzling excess of high-energy electrons that bombard the Earth from space. The source of these cosmic rays is unknown, but it must be close to the solar system and could be made up of dark matter. The results reported by Nature magazine in its issue dated 20 November 2008. It is a great discovery, said co-author Jolm Wefel with Louisiana State University.

“This is the first time we see a separate source of accelerated cosmic rays that stands out on the wider galactic background.”

To study the strongest and most interesting cosmic rays, Wefel et al spent the last eight years managing a number of balloons in the stratosphere over Antarctica. Their cosmic ray detector, which is financed by NASA revealed a significant excess of high energy electrons.

“The source of these exotic electron must be relatively close to the solar system – located not more than one kiloparsec,”

– said co-author Jim Adams of NASA’s Goddard Space Flight Center Marshall. Galactic cosmic rays are subatomic particles accelerated to near light speed distant supernova explosions and other violent events.

One in crowds rushing through the Milky Way, creating a mist of high-energy particles that enter the solar system from all directions.

Cosmic rays consist mostly of protons and heavier atomic nuclei with some electrons and photons as a spice in the mix. Why the source must be close? According to Adams:

“High-energy electrons rapidly lose energy as they fly through the galaxy. They impart energy to the two main ways:

(1) clash with the lower-energy photons, in a process called inverse Compton scattering, and

(2) when the radiation is losing some of its energy in a spiral motion through the galactic magnetic fields. “


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