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Now
On YOWUSA.COM
YOWUSA.COM, 14-November-2003
Dave Wright
As
the onslaught of solar flares, CMEs and coronal holes continue to beat
the Earth, raising seismic and volcanic activity in Yellowstone and around
the world to record heights, they us send a very graphic reminder that
Yellowstone is not the only geologically active area, especially in the
United States.? In California, six volcanoes/calderas are either active
or potentially active.? One of these calderas, the Long Valley Caldera,
located in the eastern part of California, is not as large as Yellowstone
but is just as deadly and is showing signs of an impending eruption.?
If continued solar activity continues at its record breaking pace our
planet might receive a one-two knockout punch between Yellowstone and
Long Valley.? If this occurs, our planet will experience catastrophic
earthchanges that could change the face of our planet for all time.
In
The News
Science@NASA, 12 November
2003
IS
THE SUNSPOT CYCLE BROKEN?
Solar maximum is years past,
yet the sun has been remarkably active lately. Is the sunspot cycle broken?
November 12, 2003: Imagine you're in California. It's July, the middle
of summer. The sun rises early; bright rays warm the ground. It's a great
day to be outside. Then, suddenly, it begins to snow--not just a little
flurry, but a swirling blizzard that doesn't stop for two weeks. That's
what forecasters call unseasonal weather.
It sounds incredible, but "something like that just happened on the sun,"
says David Hathaway, a solar physicist at NASA's Marshall Space Flight
Center.
Space Weather News for Nov. 12, 2003
SOLAR STORM STILL RAGING ON
FAR SIDE SUNSPOTS: Using a technique called helioseismic holography,
astronomers can do something amazing: look through the sun to find sunspots
on the far side of our star. On Nov. 11th their holographic maps revealed
giant sunspots 486 and 488--the same active regions that caused so much
intense space weather a few weeks ago.
These spots are still active. Explosions from their vicinity have been
hurling clouds of gas over the sun's limb in recent days, e.g., on Nov.
11th and Nov. 12th. The sun's 27-day rotation will soon carry the pair
around to the Earth-facing side of the sun. So get ready for more solar
activity.
Tech Central Station, 12 November 2003
NEAR-EARTH HAZARDS:
TOO HOT TO HANDLE?
The sun has exhibited surprising flare activity this year. In general
flares tend to occur at times when sunspots appear in the greatest number
-- that is, when the sun is most heavily covered by intense regions of
intense magnetic field. The sunspot cycle brings high magnetism and the
possibility for flares roughly every 11 years. The cycle last peaked in
2000-2001, and the number of sunspots has been dropping to the cycle's
expected low around 2005. Despite the low number of sunspots, some that
have appeared have been unusually large. There is no good explanation
why large spots have been recently appearing.
The unusual Nov. 4 flare probably ranks with a few great flares of the
past for which satellite monitoring was unavailable, but whose strengths
can be inferred from supporting observations.
On the afternoon of Thursday, Sept. 1, 1859, Richard Carrington and Richard
Hodgson independently observed what is thought to be the first recorded
flare in visible light. Carrington, observing the projected image of the
sun, saw "a ray of light" whose "brilliancy was fully equal to that of
direct Sun-light" that persisted for about five minutes.
Eurekalert, 11 November 2003
ARCTIC
SEA ICE MELTING -
ANTARCTIC SEA ICE INCREASING
Arctic and Antarctic sea ice marching to different drivers.
A 30-year satellite record of sea ice in the two polar regions reveals
that while the Northern Hemisphere Arctic ice has melted, Southern Hemisphere
Antarctic ice has actually increased in more recent years. However, due
to dramatic losses of Antarctic sea ice between 1973 and 1977, sea ice
in both hemispheres has shrunk on average when examined over the 30-year
time frame.
This study presents the longest continuous record of sea ice for both
hemispheres based primarily on satellites, and the longer reading already
begins to highlight some new information about sea ice trends over time,
like the fact that more recently the Arctic has been losing ice at a faster
rate.
"If you compare the rate of loss in the Arctic for the last two decades,
it is 20 percent greater than the rate of loss over the last three decades,"
said Don Cavalieri, lead author of the study, and a senior researcher
at NASA's Goddard Space Flight Center.
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