Zonnevlammen #2: Recht op aarde af

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Op dinsdag 9 augustus 2011 14:05 schreef basst2005 het volgende:
Wat betekend dit precies?

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EMERGING SUNSPOT: A big new sunspot is emerging over the sun's northeastern limb. AR1271 has at least four dark cores and it is crackling with small flares. The sunspot's entrance was captured in this 24-hour movie from the Solar Dynamics Observatory:

NOAA forecasters estimate a 60% chance of M-class solar flares during the next 24 hours. Because of its location near the sun's limb, AR1271 does not yet pose a threat for Earth-directed eruptions. This could change in the days ahead, however, as the sunspot turns to face our planet. Readers with solar telescopes are encouraged to monitor developments.

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Nasa briefing on Thursday due to recent Solar Flare activity

Solar Flare Activity Prompting NASA to Convene a News Briefing Thursday in Washington.
Increasing solar activity and the threat that coronal mass ejections (CME) pose to Earth has prompted NASA to convene a news briefing at its Headquarter building in Washington on Thursday afternoon.

Thursday’s briefing has been arranged, space agency officials say, in light of new information coming from NASA’s Solar Terrestrial Relations Observatory (STEREO), spacecraft and other NASA probes. The briefing will feature new details about the structure of solar storms and the impact they have on Earth.

The briefing panellists are Madhulika Guhathakurta, STEREO program scientist; Craig DeForest, staff scientist, Southwest Research Institute, David Webb, research physicist, Institute for Scientific Research, Boston College; and Alysha Reinard, research scientist, National Oceanic and Atmospheric Administration (NOAA) and the University of Colorado.

A massive solar flare, the largest recorded in four years, occurred last Tuesday prompting fears the blast could result in some disruption to Global Positioning Satellites (GPS) or communication signals around the world.

Solar flares happen when the powerful magnetic fields in and around the sun reconnect. They’re usually associated with active regions, often seen as sun spots, where the magnetic fields are strongest. The most powerful flare on record was in 2003, during the last solar maximum. It was so powerful that it overloaded the sensors measuring it. The current solar cycle will peak in 2013.

A powerful X-class flare can create long lasting radiation storms, which can harm satellites and even give airline passengers, flying near the poles, small radiation doses. X flares also have the potential to create global transmission problems and world-wide blackouts.

In 1989, a geomagnetic storm energised ground induced currents which disrupted electric power distribution throughout most of Quebec province in Canada and produced aurora borealis displays as far south as Texas in the USA.

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EARTH-DIRECTED FLARE: This morning at 0150 UT, sunspot 1283 produced an M5.3-class solar flare. A movie from NASA's Solar Dynamics Observatory shows the flash of extreme UV radiation. Because of the sunspot's central location on the solar disk, the eruption was Earth-directed and a CME might be heading our way. Stay tuned for updates.

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STRONG SOLAR ACTIVITY: Sunspot 1283 is crackling with solar flares. Yesterday, Sept. 6th, the active region produced an M5.3-class eruption at 0150 UT followed by a X2.1-class event at 2220 UT. NASA's Solar Dynamics Observatory recorded this extreme UV flash from the X-flare:

The flares produced waves of ionization in Earth's upper atmosphere, briefly altering the propagation of low-frequency radio signals around our planet. Moreover, the two eruptions hurled clouds of plasma (CMEs) in our general direction. A preliminary analysis of SOHO and STEREO imagery suggests that the CMEs could sail substantially north of Earth, delivering a glancing blow to Earth's magnetic field as they pass. ETA: Sept. 8-10. Stay tuned for updates

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NOTHER X-FLARE: Earth-orbiting satellites have detected another strong flare from sunspot 1283. The X1.8-class event at 2238 UT on Sept. 7th produced a bright flash of extreme UV radiation and hurled an inky-dark plume of plasma into space. Click to view the movie from NASA's Solar Dynamics Observatory:

This is the third significant flare from sunspot 1283 since Sept. 6th. All three eruptions propelled CMEs in the general direction of Earth. Not one of the CMEs, however, will hit our planet squarely. Glancing blows from the three clouds will commence sometime on Sept. 9th and continue through Sept. 11th, possibly sparking minor geomagnetic storms.

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Mega quakes occur more frequently when sun has fewer sunspots: researchers

The frequency of mega earthquakes increases during periods when the sun has fewer sunspots, a team of Japanese researchers has found.

The finding was made by a team led by Kiyofumi Yumoto, a researcher in space and earth electromagnetism at Kyushu University's Space Environment Research Center.

The March 11 Great East Japan Earthquake occurred when there were few sunspots. The latest research suggests that the sun's activity could influence movements beneath the earth's surface.

Sunspots gradually increase and decrease in number in a cycle of about 11 years, and cause changes in the earth's atmosphere. The research team investigated the possibility that they could also produce changes beneath the earth's surface, and compared data on the number of sunspots between 1963 and 2000 and the 327,625 earthquakes of magnitude 4 or more that occurred during this period.

The study found that 65 percent of the earthquakes with magnitudes between 4.0 and 4.9 occurred during the periods with the fewest sunspots (each lasting about two years). The figure was around the same for earthquakes with magnitudes between 5.0 and 7.9. However, the figure was higher for the 28 mega earthquakes with magnitudes in the 8.0-9.9 range, with 79 percent of them occurring during periods with the fewest sunspots.

When there are fewer sunspots, a phenomenon occurs in which solar winds, or streams of charged particles from the sun, get stronger an average of three to four times a month. Seventy percent of the earthquakes of magnitude 6.0 or stronger occurred at such times.

Solar winds that become stormy are known to be able to induce strong currents in power transmission lines, which can lead to major blackouts.

"The relationship between the sun and the activity of earthquakes is not clear, but we hope that this is a step in uncovering the mystery of quakes," Yumoto said.

The results of the group's research will be announced at a meeting of the Society of Geomagnitism and Earth, Planetary and Space Sciences, which opens in Kobe on Nov. 3.

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Op maandag 26 september 2011 21:58 schreef zenkelly het volgende:
CME(één van de ..) is aangekomen: KP=8!!! Zelfs in België is nu poollicht te zien....wie kan de bewolking en regen ff wegduwen, dan zouden we hier ook wat kunnen zien!

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Sunspot 1302
it's BIG...
it's BAD...

and it's coming our way...

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Op dinsdag 27 september 2011 20:00 schreef DemonRage het volgende:

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Dat kan ik nergens lezen op spaceweather.com... maar we kijken nu wel bijna recht in de loop van het geweer.

twitter:

spaceweather twitterde op dinsdag 27-09-2011 om 19:01:23 Sunspot 1302: It's Big. It's Bad. And It's Coming Our Way http://srs.gs/16hN reageer retweet