Slashdot Mirror


NASA's Earth Observatory Shows Solar Flare

staaktdenarbeid writes "In the past few months I became very impressed with the timeliness and quality of NASA's Earth Observatory. When hurricane Isabel struck, their imagery showed me the biggest latte ever made. Now that Southern California is on fire, it takes only a look from outer space to see how bad the sitation really is. And, today, a massive solar flare showed up on their website as soon as it errupted (so to speak). Each of these pictures is accompanied by detailed technical background. And for the rest of us, they also make perfect screen backgrounds. Very cool."

11 of 176 comments (clear)

  1. aurora alert... by AmigaAvenger · · Score: 4, Informative
    for anyone interested, the aurora from this recent blast is starting now, go out and observe it if you happen to have relatively dark skies... for the current 'weather' conditions, check the NASA POES satellite

    and better yet, just go to some recent aurora pics to see what this one probably will look like...

  2. Re:Solar flares - bad for Christmas by KD5YPT · · Score: 4, Interesting

    One point of note, all charged particles from the sun will get redirected by the earth's magnetic field to the polar region and be disipated in the upper atmosphere. Only a very, very powerful one (X with some ridiculously large number) can warp the earth magnetic field enough that it destroyed the ozone planetwide and ultimately, destroys us.

    --
    In US, you can easily buy enough major firearms to wipe out your neighbourhood but a few little fireworks are banned.
  3. I found this useful by digital+bath · · Score: 4, Informative
    I was visiting http://www.space.com/scienceastronomy/solar_flare_ 031028.html earlier today. According to that site, the storm should hit full-force sometime around Noon EST Wednesday (1700 UT).
    That would put the arrival at about Noon EST Wednesday (1700 UT).

    "That's when it starts," Kunches said. But the storm will blow through over several hours, he said, and won't be done for up to two days.

    "We may be in for some great aurora," Brekke said.
    --
    find / -name "*.sig" | xargs rm
  4. Re:Exactly... by Anonymous+Crowhead · · Score: 4, Informative

    ...how far down the US will the Aurora Borealis be showing?

    This article says maybe as far as the southern US.

  5. I wish .... by Argofickyusilf · · Score: 5, Insightful

    that the public could realise how useful NASA is. If they could see the services that they offer, maybe it would be "politically correct" for Congrees to give them the funding that they need.

  6. SXI online, but too late by barakn · · Score: 4, Informative

    New images of the xray sun are being taken by the SXI imager once again. Use of the imager had stopped because of an unexpected over-current problem. The SXI team decided that they could safely operate the instrument at a lower voltage, albeit at the expense of a lower signal to noise ratio. The decision was hastened by the dramatic solar events today.

    --
    "I'm so moist I'm sticking to the leather." -Kermit the Frog on The Late Late Show
  7. Before and after pictures of So. Cal. fires by adambehnke · · Score: 5, Interesting

    You can see a pretty cool before picture (note, by before, I mean _yesterday_)...

    Before

    And now, check out the after (today):

    After

  8. Another Zoomed out Picture of the Fires by dapantzman · · Score: 4, Informative

    This page has a similar picture. It is from NASA's SEAWIFS project. It shows the same fires in a larger area and zoomed out to give a better perspective. Click on the smaller picture to get a gigantic version of the smaller one.

  9. Re:Only damage to the Dollar by Eraser_ · · Score: 4, Interesting

    A lower poster posted it, but just to make sure this hits your inbox, these large open areas of brush, trees, etc, in the desert might I remind you, burn every so often naturally. The problem is, now there are multi-million dollar VIP homes in those mountains, out in the middle of no where, etc.

    Those VIPs make sure they fire department is well equipped to put out brush fires when they happen naturally (lightning, heat + rotting brush, etc). They do not however, line the pockets of the forest commision (or whoever) to go in and clear brush and things which would have burned naturally and completed a carbon cycle, etc. Yes small woodland creatures with big sad eyes die in the fires, they die when the brush is clear, and so on and so forth.

    Now a major fire starts (from a pipe bomb, a cigarette, or a lightning strike), the winds pick up and turn it into metal melting house reducing inferno, which we cannot contain, and nature settles it's tab.

    I'm no GD tree hugging hippie, but I'm also not in favor of pave it all mentality. Living in Florida I watched houses get built where they had to redo the foundation 4 times in a row because they were building too close to a lake. People are creeping into things which aren't meant to have permanent dwellings put on them. They built this house during a dry season when the lake was low, then 25% of the way through construction, the lake gained 3 feet and the water was lapping over the foundation and washing it away.

    Millionaires put a house up in the mountains (fire burns up remeber?) and then they burn to the ground. I'm sorry they have lost all their things, their pictures and memories, but at some point they have to live up to where they are living. No reasonable insurance company should underwrite those homes, or if they are going to, they should be damn sure that the government or the home owners dont have a shake shingle roof on their home, and theres no dry brush etc for 500ft, things like that. That leaves plenty of room for trees, grass, and plants.

    (Oh so you know, I live way to close to the Claremont fires, but still well below them, and out of the flood plane too, little research saves us a ton of money on homeowners insurance. People 1/2 mile North of us were evacuated, people 1 mile north of us lost their homes. Hot warm ash fell on our house, but we clear the brush, we have a ceramic tile roof, and we were out there at 2am hosing it all down, just in case.)

  10. Physics of Flare-Induced Power Outages by rjthomas61 · · Score: 5, Interesting

    Article on solar flares and power outages.

    "If (when) this flow of charged particles and embedded magnetic field collides with the Earth, it dramatically disrupts Earth's geomagnetic field and ionosphere, changing the terrestrial magnetic fields, and therefore causing currents to flow in the upper ionosphere, ...in the earth itself, and in long distance conductors. The interaction of the [Coronal Mass Ejection] with the Earth is referred to as a geomagnetic storm."

    "This current can cause saturation of the large power transformers at either end of the transmission line, creating a host of undesirable effects. ... Typical undesirable effects range from voltage regulation difficulties, to highly nonlinear sinusoidal primary and secondary currents, resulting in circuit breaker tripping; to creation of local hot spots within the transformer, resulting in transformer failure. ... The effects of [Geomagnetically Induced Currents] were dramatically demonstrated during March 1989, when GIC caused a cascading failure in the Quebec Power system, putting nearly nine million customers in the dark, in less than 90 seconds."

    (Note that this first page is a direct link to a frame, the second through sixth frames are accessible by the "next" tags in the right-hand corners.)

    --
    Take off, every Hoser
  11. Re:Only damage to the Dollar by momerath2003 · · Score: 4, Informative

    I guess it's good that the nuclear power plants of the design in the U.S CAN'T FREAKING CREATE FALLOUT! If you had to hide somewhere from a fire, the inside of a nuclear power plant would be just about the safest place. These things are built to take on hell.

    Just because you watched "Atomic Twister" on TBS Superstation doesn't mean that it's true, indicative of ANYTHING about nuclear power plants, or that if a fire got near a nuclear plant that "they could have a Civ2:CallToPower nuclear fall out zone to clean up."

    If there's anything that California, and the U.S. in general, needs, it's more nuclear plants. Or perhaps you don't remember the rolling blackouts of 2002 or whenever caused by a lack of power partially due to the fatally flawed, so-called "environmentally friendly" philosophy of California.

    But please. Before you start posting about the dangers to something about which you apparently haven't a clue, read up on it instead of basing your obviously limited knowledge from bad sci-fi movies.

    --
    I had but a simple dream, to destroy all humans.