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Science/Tech
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Title: Sun may soon have four poles, say researchers
Source: [None]
URL Source: http://ajw.asahi.com/article/behind ... /social_affairs/AJ201204200075
Published: Aug 13, 2012
Author: SEIJI TANAKA
Post Date: 2012-08-13 00:42:14 by farmfriend
Keywords: None
Views: 75
Comments: 1

Sun may soon have four poles, say researchersM

By SEIJI TANAKA/ Staff Writer

The sun may be entering a period of reduced activity that could result in lower temperatures on Earth, according to Japanese researchers.

Officials of the National Astronomical Observatory of Japan and the Riken research foundation said on April 19 that the activity of sunspots appeared to resemble a 70-year period in the 17th century in which London’s Thames froze over and cherry blossoms bloomed later than usual in Kyoto.

In that era, known as the Maunder Minimum, temperatures are estimated to have been about 2.5 degrees lower than in the second half of the 20th century.

The Japanese study found that the trend of current sunspot activity is similar to records from that period.

The researchers also found signs of unusual magnetic changes in the sun. Normally, the sun’s magnetic field flips about once every 11 years. In 2001, the sun’s magnetic north pole, which was in the northern hemisphere, flipped to the south.

While scientists had predicted that the next flip would begin from May 2013, the solar observation satellite Hinode found that the north pole of the sun had started flipping about a year earlier than expected. There was no noticeable change in the south pole.

If that trend continues, the north pole could complete its flip in May 2012 but create a four-pole magnetic structure in the sun, with two new poles created in the vicinity of the equator of our closest star.

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#1. To: farmfriend (#0)

If that trend continues, the north pole could complete its flip in May 2012 but create a four-pole magnetic structure in the sun, with two new poles created in the vicinity of the equator of our closest star.

Whoah.

"Mr. Prime Minister, there is only one important question facing us, and that is the question whether the white race will survive." -- Leonid Brezhnev to James Callahan

Prefrontal Vortex  posted on  2012-08-13   15:06:00 ET  Reply   Trace   Private Reply  


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