Zonnevlammen #2: Recht op aarde af

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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:

[..]

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

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

Btw... deze astroïde staat ook maar pas in het lijstje:
2011 SE58 Sep 27 0.6 LD -- 13 m

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Op dinsdag 11 oktober 2011 16:49 schreef Maron het volgende:
http://www.earth-matters.(...)reem-ruimteweer.html

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SOLAR ACTIVITY IN THE OFFING: A big sunspot is emerging over the sun's NE limb. Yesterday it unleashed an M1-class solar flare (SDO movie) and hurled a coronal mass ejection into space. Geoeffective solar activity could increase in the days ahead as the sun's rotation turns the sunspot toward Earth.

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BIG SUNSPOT: A large sunspot group is rotating over the sun's northeastern limb, possibly signaling an uptick in solar activity. NASA's Solar Dynamics Observatory took this picture during the early hours of Nov. 2nd:

Measuring some 40,000 km wide and at least twice that in length, the behemoth active region is an easy target for backyard solar telescopes. Astronomers are encouraged to monitor the region: NOAA forecasters estimate a 60% chance of M-class solar flares during the next 24 hours. Eruptions today would not be Earth directed, but future eruptions could be as the sunspot turns toward our planet in the days ahead.

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One of the largest sunspots in years is rotating over the sun's northeastern limb. NASA's Solar Dynamics Observatory took this picture of AR1339 during the early hours of Nov. 3rd:

Measuring some 40,000 km wide and at least twice that in length, the sprawling sunspot group is an easy target for backyard solar telescopes. Two or three of the sunspot's dark cores are wider than Earth itself.

Naturally, such a large sunspot has potential for strong flares. NOAA forecasters estimate a 50% chance of M-class solar flares during the next 24 hours. One such eruption has already occured: An M4-flare at 2200 UT on Nov. 2nd produced a bright flash of extreme UV radiation (SDO movie) and hurled a coronal mass ejection (CME) into space. The CME is not heading our way. Future CMEs could have greater effect as AR1339 turns toward Earth in the days ahead

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5 M-class solar flares in 24 hours
November 6, 2011 – Sunspot AR1339 is crackling with M-class solar flares, unleashing at least five of them in the past 24 hours. The blasts have been coming with such thick frequency that photographer Randy Shivak of Elyria, Ohio, was able to catch one in action on Nov. 5th: “Looking like iron filings around a bar magnet, sunspot group 1339 showed itself in the throes of a solar flare,” says Shivak. Even bigger eruptions are possible before the weekend is over. AR1339 has a delta-class magnetic field that harbors energy for X-class flares. The sunspot is turning toward Earth, so the odds of a geo-effective flare are increasing. Sunspot 1339 has a delta-class magnetic field that harbors energy for X-class solar flares.

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Comet Lovejoy (C/2011 W3) is diving into the Sun and furiously vaporizing as it approaches the stellar surface. The Solar and Heliospheric Observatory (SOHO) is recording the kamikaze plunge. “This is, without any doubt, the brightest sungrazing comet that SOHO has ever seen,” says comet researcher Karl Battams of the Naval Research Lab in Washington DC. The comet’s nucleus, thought to be twice as wide as a football field, will skim approximately 140,000 km (1.2 solar radii) above the solar surface on Dec. 15/16. At such close range, solar heating will almost certainly destroy the comet’s icy core, creating a cloud of vapor and comet dust that will reflect lots of sunlight. “If Comet Lovejoy gets as bright as magnitude -4 or -5, there is a tiny but non-zero chance that it could become visible in the sky next to the Sun,” says Battams. Indeed, something similar happened to Comet McNaught in January 2007 when it was visible in broad daylight: gallery. Standing in the shadow of a tall building to block the sun allowed the comet to be seen in blue sky nearby. “Comet Lovejoy will be reaching perihelion (closest approach to the sun) right around sunset on Dec. 15th for people in the US East, Central, Mountain, and Pacific time zones,” continues Battams. “Be alert for the comet to the left of the sun at that time.” Caution: Do not look at or near the sun through unfiltered optics; focused sunlight can seriously damage your eyes. Discovered on Dec. 2nd by amateur astronomer Terry Lovejoy of Australia, the comet is an unusually large member of the Kreutz family. Kreutz sungrazers are fragments of a single giant comet (probably the Great Comet of 1106) that broke apart back in the 12th century. SOHO sees one plunging into the Sun every few days, but most are small, no more than 10 meters wide. Comet Lovejoy is at least ten times larger than usual