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"We certainly did not expect to find superflare stars with magnetic fields as weak as the magnetic fields on the Sun. This opens the possibility that the Sun could generate a superflare - a very frightening thought" says Christoffer Karoff a leading expert in the internal structure of the Sun and its activity at Denmark's Aarhus University. "If an eruption of this size was to strike the Earth today, it would have devastating consequences. Not just for all electronic equipment on Earth, but also for our atmosphere and thus our planet's ability to support life."
The Earth is often struck by solar eruptions. These eruptions consist of energetic particles that are hurled away from the Sun into space, where those directed towards Earth encounter the magnetic field around our planet. When these eruptions interact with Earth's magnetic field they cause beautiful auroras. A poetic phenomenon that reminds us, that our closest star is an unpredictable neighbor. The largest observed eruption took place in September 1859, where gigantic amounts of hot plasma from our neighboring star struck the Earth.
On 1 September 1859, astronomers observed how one of the dark spots on the surface of the Sun suddenly lit up and shone brilliantly over the solar surface. This phenomenon had never been observed before and nobody knew what was to come. On the morning of September 2, the first particles from, what we now know was an enormous eruption on the Sun, reached the Earth. The 1859 solar storm is also known as the "Carrington Event". Auroras associated with this event could be seen as far south as Cuba and Hawaii, telegraph system worldwide went haywire, and ice core records from Greenland indicate that the Earth's protective ozone layer was damaged by the energetic particles from the solar storm. The cosmos, however, contains other stars and some of these regularly experience eruptions that can be up to 10.000 times larger than the Carrington event.
worrying about super flare should be the last threat on their minds,
Some estimates have suggested that the loss of multiple EHV transformers from a CME event could shut down portions of the grid for months. A similar study prepared in 2013 by Lloyd’s suggested damages could reach $1.2 trillion and outages could extend up to two years. Work by the Electric Power Research Institute, however, has suggested that temporary EHV transformers could be placed in a matter of days and kept in operation long enough to source permanent replacements.
originally posted by: jadedANDcynical
a reply to: Elementalist
worrying about super flare should be the last threat on their minds,
au contrer, if something of equivalent energy as the Carrington Event were to happen today, we would likely be in a lot worse shape due to our dependence upon all things electronic.
Maybe the grid would withstand such an event if it were shut down in time, maybe it wouldn't. We really don't know.
Some estimates have suggested that the loss of multiple EHV transformers from a CME event could shut down portions of the grid for months. A similar study prepared in 2013 by Lloyd’s suggested damages could reach $1.2 trillion and outages could extend up to two years. Work by the Electric Power Research Institute, however, has suggested that temporary EHV transformers could be placed in a matter of days and kept in operation long enough to source permanent replacements.
Severe Solar Storm Could Shut Down U.S. Grid for Months, Study Says
It's not out of the realm of possibility.
What would happen to all of the nuclear power plants if they could not maintain cooling for the reactors or spent fuel pools?
Here's a hint:
Also think about all of the spent fuel that needs constant cooling otherwise it heats up and melts down.
Back up generators only run as long as they have fuel. How long will fuel deliveries continue if there's no power grid distributing electricity?
Here is the .pdf of the study mentioned in my linked article:
Linky (direct .pdf link)
Our sun’s adolescence was stormy—and new evidence shows that these tempests may have been just the key to seeding life as we know it. Some 4 billion years ago, the sun shone with only about three-quarters the brightness we see today, but its surface roiled with giant eruptions spewing enormous amounts of solar material and radiation out into space. These powerful solar explosions may have provided the crucial energy needed to warm Earth, despite the sun’s faintness.The eruptions also may have furnished the energy needed to turn simple molecules into the complex molecules such as RNA and DNA that were necessary for life. Understanding what conditions were necessary for life on our planet helps us both trace the origins of life on Earth and guide the search for life on other planets. Until now, however, fully mapping Earth’s evolution has been hindered by the simple fact that the young sun wasn’t luminous enough to warm Earth.
Our young Earth, however, had a weaker magnetic field, with a much wider footprint near the poles. “Our calculations show that you would have regularly seen auroras all the way down in South Carolina,” says Airapetian, lead author of the paper. “And as the particles from the space weather traveled down the magnetic field lines, they would have slammed into abundant nitrogen molecules in the atmosphere. Changing the atmosphere’s chemistry turns out to have made all the difference for life on Earth.” The atmosphere of early Earth was also different than it is now: Molecular nitrogen – that is, two nitrogen atoms bound together into a molecule – made up 90 percent of the atmosphere, compared to only 78 percent today. As energetic particles slammed into these nitrogen molecules, the impact broke them up into individual nitrogen atoms. They, in turn, collided with carbon dioxide, separating those molecules into carbon monoxide and oxygen. The free-floating nitrogen and oxygen combined into nitrous oxide, which is a powerful greenhouse gas. When it comes to warming the atmosphere, nitrous oxide is some 300 times more powerful than carbon dioxide. The teams’ calculations show that if the early atmosphere housed less than one percent as much nitrous oxide as it did carbon dioxide, it would warm the planet enough for liquid water to exist. This newly discovered constant influx of solar particles to early Earth may have done more than just warm the atmosphere, it may also have provided the energy needed to make complex chemicals. In a planet scattered evenly with simple molecules, it takes a huge amount of incoming energy to create the complex molecules such as RNA and DNA that eventually seeded life. While enough energy appears to be hugely important for a growing planet, too much would also be an issue — a constant chain of solar eruptions producing showers of particle radiation can be quite detrimental. Such an onslaught of magnetic clouds can rip off a planet’s atmosphere if the magnetosphere is too weak. Understanding these kinds of balances help scientists determine what kinds of stars and what kinds of planets could be hospitable for life.
Add to this thread.. Interesting article published today by the daily Galaxy..
Such studies also show that young stars frequently produce powerful flares – giant bursts of light and radiation — similar to the flares we see on our own sun today. Such flares are often accompanied by huge clouds of solar material, called coronal mass ejections, or CMEs, which erupt out into space.