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More perfect storm: the hole in the earth’s magnetic field
According to a December 16, 2008 report, NASA’s THEMIS spacecraft has discovered a hole in earth’s magnetic field which is 10 times as large as previously thought. The magnetosphere, which is designed to protect earth from the plasma of solar flares, now has a hole in it four time the size of the earth.
According to the NASA report, “Northern IMF events don't actually trigger geomagnetic storms but they do set the stage for storms by loading the magnetosphere with plasma. A loaded magnetosphere is primed for auroras, power outages, and other disturbances that can result when, say, a CME (coronal mass ejection) hits.”
The solar maximum is expected in 2012. University of New Hampshire scientist Jimmy Raeder states, “"We're entering Solar Cycle 24. For reasons not fully understood, CMEs in even-numbered solar cycles (like 24) tend to hit Earth with a leading edge that is magnetized north. Such a CME should open a breach and load the magnetosphere with plasma just before the storm gets underway. It's the perfect sequence for a really big event."
According to a December 16, 2008 report, NASA’s THEMIS spacecraft has discovered a hole in earth’s magnetic field which is 10 times as large as previously thought. The magnetosphere, which is designed to protect earth from the plasma of solar flares, now has a hole in it four time the size of the earth.
According to the NASA report, “Northern IMF events don't actually trigger geomagnetic storms but they do set the stage for storms by loading the magnetosphere with plasma. A loaded magnetosphere is primed for auroras, power outages, and other disturbances that can result when, say, a CME (coronal mass ejection) hits.”
The solar maximum is expected in 2012. University of New Hampshire scientist Jimmy Raeder states, “"We're entering Solar Cycle 24. For reasons not fully understood, CMEs in even-numbered solar cycles (like 24) tend to hit Earth with a leading edge that is magnetized north. Such a CME should open a breach and load the magnetosphere with plasma just before the storm gets underway. It's the perfect sequence for a really big event."
What is Magnetosphere?
(copied from http://en.wikipedia.org/wiki/Magnetosphere)
A magnetosphere is formed when a stream of charged particles, such as the solar wind, interacts with and is deflected by the intrinsic magnetic field of a planet or similar body. Earth is surrounded by a magnetosphere, as are the other planets with intrinsic magnetic fields: Mercury, Jupiter, Saturn, Uranus, and Neptune. Jupiter's moon Ganymede has a small magnetosphere — but it is situated entirely within the magnetosphere of Jupiter, leading to complex interactions. The ionospheres of weakly magnetized planets such as Venus and Mars set up currents that partially deflect the solar wind flow, but do not have magnetospheres, per se.
hey rohan,
ReplyDeletekeep going.best of luck...!!
regards,
Varsha.
(http://angelsnet.blogspot.com/)